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Bazi M, Bracciotti E, Fioravanti L, Marchetti F, Rancan M, Armelao L, Samaritani S, Labella L. Mononuclear Rare-Earth Metalloligands Exploiting a Divergent Ligand. Inorg Chem 2024; 63:7678-7691. [PMID: 38623915 DOI: 10.1021/acs.inorgchem.3c04532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Rare-earth tris-diketonato [RE(dike)3pyterpy] metalloligands can be prepared reacting at room temperature [RE(dike)3dme] (dme = 1,2-dimethoxyethane; dike = tta with Htta = 2-thenoyltrifluoroacetone and RE = La, 1; Y, 2; Eu, 3; Dy, 4; or dike = hfac with Hhfac hexafluoroacetylacetone, and RE = Eu, 5; Tb, 6; Yb 7) with 4'-(4‴-pyridil)-2,2':6',2″-terpyridine (pyterpy). The molecular structures of 1, 5, 6, and 7 have been studied through single-crystal X-ray diffraction showing mononuclear neutral complexes with the rare-earth ion in coordination number nine and with a muffin-like coordination geometry. [RE(tta)3pyterpy] promptly reacts with [M(tta)2dme] with formation of [Mpyterpy2][RE(tta)4]2 (M = Zn, RE = Y, 8; M = Co, RE = Dy, 9). Consistently, [Zn(hfac)2dme] reacts at room temperature with 2 equiv of pyterpy yielding [Znpyterpy2][hfac]2 10 that easily can be transformed by reaction with 2 equiv of [Eu(hfac)3] in [Znpyterpy2][Eu(hfac)4]2 11 that has been structurally characterized. Finally, 1, 2, 3, 5, and 7 metalloligands react at room temperature in few minutes with [PtCl(μ-Cl)PPh3]2 yielding the heterometallic molecular complexes [RE(dike)3pyterpyPtCl2PPh3] (dike = tta, RE = La, 12; Y, 13; Eu; 14; dike = hfac, RE = Eu, 15; Yb, 16).
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Affiliation(s)
- Marco Bazi
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Edoardo Bracciotti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Lorenzo Fioravanti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Marzio Rancan
- CNR ICMATE and INSTM, c/o Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche and CIRCC, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
- CNR DSCTM, Piazzale A. Moro 7, 00185 Roma, Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
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Gallo E, Bellucci L, Carlotto S, Bottaro G, Babetto L, Giordano L, Marchetti F, Samaritani S, Armelao L, Labella L. Aluminium 8-Hydroxyquinolinate N-Oxide as a Precursor to Heterometallic Aluminium-Lanthanide Complexes. Molecules 2024; 29:451. [PMID: 38257364 PMCID: PMC10821320 DOI: 10.3390/molecules29020451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
A reaction in anhydrous toluene between the formally unsaturated fragment [Ln(hfac)3] (Ln3+ = Eu3+, Gd3+ and Er3+; Hhfac = hexafluoroacetylacetone) and [Al(qNO)3] (HqNO = 8-hydroxyquinoline N-oxide), here prepared for the first time from [Al(OtBu)3] and HqNO, affords the dinuclear heterometallic compounds [Ln(hfac)3Al(qNO)3] (Ln3+ = Eu3+, Gd3+ and Er3+) in high yields. The molecular structures of these new compounds revealed a dinuclear species with three phenolic oxygen atoms bridging the two metal atoms. While the europium and gadolinium complexes show the coordination number (CN) 9 for the lanthanide centre, in the complex featuring the smaller erbium ion, only two oxygens bridge the two metal atoms for a resulting CN of 8. The reaction of [Eu(hfac)3] with [Alq3] (Hq = 8-hydroxyquinoline) in the same conditions yields a heterometallic product of composition [Eu(hfac)3Alq3]. A recrystallization attempt from hot heptane in air produced single crystals of two different morphologies and compositions: [Eu2(hfac)6Al2q4(OH)2] and [Eu2(hfac)6(µ-Hq)2]. The latter compound can be directly prepared from [Eu(hfac)3] and Hq at room temperature. Quantum mechanical calculations confirm (i) the higher stability of [Eu(hfac)3Al(qNO)3] vs. the corresponding [Eu(hfac)3Alq3] and (ii) the preference of the Er complexes for the CN 8, justifying the different behaviour in terms of the Lewis acidity of the metal centre.
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Affiliation(s)
- Elisa Gallo
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
| | - Luca Bellucci
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
- ICMATE-CNR and INSTM, Presso Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy; (S.C.)
| | - Silvia Carlotto
- ICMATE-CNR and INSTM, Presso Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy; (S.C.)
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Gregorio Bottaro
- ICMATE-CNR and INSTM, Presso Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy; (S.C.)
| | - Luca Babetto
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Luca Giordano
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
- Dipartimento di Scienze Chimiche e Tecnologie dei Materiali (DSCTM), Consiglio Nazionale Delle Ricerche, Piazzale A. Moro 7, I-00185 Roma, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy (L.G.)
- ICMATE-CNR and INSTM, Presso Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy; (S.C.)
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Bellucci L, Carlotto S, Bottaro G, Babetto L, Labella L, Gallo E, Marchetti F, Samaritani S, Armelao L. Competing excitation paths in luminescent heterobimetallic Ln-Al complexes: Unraveling interactions via experimental and theoretical investigations. iScience 2023; 26:106614. [PMID: 37250321 PMCID: PMC10214411 DOI: 10.1016/j.isci.2023.106614] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/15/2023] [Accepted: 03/31/2023] [Indexed: 05/31/2023] Open
Abstract
The interest for heterometallic lanthanide-d or-p metal (Ln-M) complexes is growing because of a potential cooperative or synergistic effect related to the proximity of two different metals in the same molecular architecture affording special tunable physical properties. To exploit the potentiality of Ln-M complexes, suitable synthetic approaches, and the in-depth understanding of the effect of each building block on their properties are mandatory. Here, we report the study on a family of heterometallic luminescent complexes [Ln(hfac)3Al(L)3], Ln= Eu3+ and Tb3+. Using different L ligands, we investigated the effect of the steric and electronic properties of the Al(L)3 fragment, highlighting the general validity of the employed synthetic route. A marked difference in the light emission of [Eu(hfac)3Al(L)3] and [Tb(hfac)3Al(L)3] complexes has been observed. Thanks to photoluminescence experiments and Density Functional Theory calculations, Ln3+ emissions are explained with a model involving two non-interacting excitation paths through hfac or Al(L)3 ligands.
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Affiliation(s)
- Luca Bellucci
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Silvia Carlotto
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Gregorio Bottaro
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Luca Babetto
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Luca Labella
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Elisa Gallo
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, 35131 Padova, Italy
- Dipartimento di Scienze Chimiche e Tecnologie dei Materiali (DSCTM) Consiglio Nazionale delle Ricerche Piazzale A. Moro 7, 00185 Roma, Italy
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Bellucci L, Fioravanti L, Armelao L, Bottaro G, Marchetti F, Pineider F, Poneti G, Samaritani S, Labella L. Size Selectivity in Heterolanthanide Molecular Complexes with a Ditopic Ligand. Chemistry 2023; 29:e202202823. [PMID: 36200677 PMCID: PMC10100000 DOI: 10.1002/chem.202202823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Indexed: 11/06/2022]
Abstract
The similar reactivity of lanthanides generally leads to statistically populated polynuclear complexes, making the rational design of ordered hetero-lanthanide compounds extremely challenging. Here we report on the site selectivity in hetero-lanthanide tetranuclear complexes afforded by the relatively simple ditopic pyterpyNO ligand (4'-(4-pyridil)-2,2':6',2"-terpyridine N-oxide). The sequential room temperature reaction of RE2 (tta)6 (pyterpyNO)2 (where RE=Y, (1); Eu, (2), Dy, (3) Htta=2-thenoyltrifluoroacetone) with La(tta)3 dme (dme=dimethoxyethane) yielded Y2 La2 (tta)12 (pyterpyNO)2 (4), Dy2 La2 (tta)12 (pyterpyNO)2 (5) and Eu2 La2 (tta)12 (pyterpyNO)2 (6). Single crystals X-ray diffraction studies showed that 4, 5 and 6 are isostructural, featuring a tetranuclear structure with two different metal coordination sites with coordination numbers 8 (CN8) and 9 (CN9). The two smaller cations are mainly bridged by the O-donor atoms of the NO groups of two pyterpyNO ligands (CN8), while the larger lanthanum centres are bound by a terpyridine unit (CN9). Size selectivity has been studied with structural and magnetic studies in the solid state and through 19 F NMR and photoluminescence studies in solution, showing a direct dependence on the difference of ionic radii of the ions and yielding a 91 % selectivity for 4. Furthermore, 19 F NMR, X-ray and PL studies pointed out that the nature of the product is independent from the synthetic route for compound Eu2 Y2 (tta)12 (pyterpyNO)2 (7), keeping the ion selectivity also for a self-assembly reaction. Unexpectedly, these studies have evidenced that selectivity is not exclusively governed by electrostatic interactions related to size dimensions.
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Affiliation(s)
- Luca Bellucci
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124, Pisa, Italy.,Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131, Padova, Italy.,CNR ICMATE and INSTM Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Lorenzo Fioravanti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124, Pisa, Italy
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131, Padova, Italy.,CNR ICMATE and INSTM Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131, Padova, Italy.,Dipartimento di Scienze Chimiche e, Tecnologie dei Materiali (DSCTM) Consiglio Nazionale delle Ricerche, Piazzale A. Moro 7, 00185, Roma, Italy
| | - Gregorio Bottaro
- CNR ICMATE and INSTM Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124, Pisa, Italy
| | - Francesco Pineider
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124, Pisa, Italy
| | - Giordano Poneti
- Instituto de Química, Universidade Federal do Rio de Janeiro, Avenida Athos da Silveira Ramos, 149 Centro de Tecnologia - Cidade Universitária, 21941-909, Rio de Janeiro, Brazil
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124, Pisa, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, 56124, Pisa, Italy.,CNR ICMATE and INSTM Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131, Padova, Italy
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5
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Farasat A, Labella L, Marchetti F, Samaritani S. Addition of aliphatic, secondary amines to coordinated isonitriles. N-acyclic carbene (NAC) platinum(II) complexes from trans-[Pt(μ-Cl)Cl(PPh3)]2. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Hyeraci M, Agnarelli L, Labella L, Marchetti F, Di Paolo ML, Samaritani S, Dalla Via L. trans-Dichloro(triphenylarsino)(N,N-dialkylamino)platinum(II) Complexes: In Search of New Scaffolds to Circumvent Cisplatin Resistance. Molecules 2022; 27:molecules27030644. [PMID: 35163916 PMCID: PMC8838190 DOI: 10.3390/molecules27030644] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 02/01/2023] Open
Abstract
The high incidence of the resistance phenomenon represents one of the most important limitations to the clinical usefulness of cisplatin as an anticancer drug. Notwithstanding the considerable efforts to solve this problem, the circumvention of cisplatin resistance remains a challenge in the treatment of cancer. In this work, the synthesis and characterization of two trans-dichloro(triphenylarsino)(N,N-dialkylamino)platinum(II) complexes (1 and 2) were described. The trypan blue exclusion assay demonstrated an interesting antiproliferative effect for complex 1 in ovarian carcinoma-resistant cells, A2780cis. Quantitative analysis performed by ICP-AES demonstrated a scarce ability to platinate DNA, and a significant intracellular accumulation. The investigation of the mechanism of action highlighted the ability of 1 to inhibit the relaxation of supercoiled plasmid DNA mediated by topoisomerase II and to stabilize the cleavable complex. Cytofluorimetric analyses indicated the activation of the apoptotic pathway and the mitochondrial membrane depolarization. Therefore, topoisomerase II and mitochondria could represent possible intracellular targets. The biological properties of 1 and 2 were compared to those of the related trans-dichloro(triphenylphosphino)(N,N-dialkylamino)platinum(II) complexes in order to draw structure–activity relationships useful to face the resistance phenotype.
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Affiliation(s)
- Mariafrancesca Hyeraci
- Department of Pharmaceutical and Pharmacological Sciences, Università degli Studi di Padova, Via F. Marzolo 5, 35131 Padova, Italy;
| | - Laura Agnarelli
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (L.A.); (L.L.); (F.M.); (S.S.)
| | - Luca Labella
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (L.A.); (L.L.); (F.M.); (S.S.)
- CISUP—Center for the Integration of Scientific Instruments, University of Pisa, 56126 Pisa, Italy
| | - Fabio Marchetti
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (L.A.); (L.L.); (F.M.); (S.S.)
| | - Maria Luisa Di Paolo
- Department of Molecular Medicine, Università degli Studi di Padova, Via G. Colombo 3, 35131 Padova, Italy;
| | - Simona Samaritani
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy; (L.A.); (L.L.); (F.M.); (S.S.)
- CISUP—Center for the Integration of Scientific Instruments, University of Pisa, 56126 Pisa, Italy
| | - Lisa Dalla Via
- Department of Pharmaceutical and Pharmacological Sciences, Università degli Studi di Padova, Via F. Marzolo 5, 35131 Padova, Italy;
- Correspondence: ; Tel.: +39-049-8275712
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Fioravanti L, Bellucci L, Armelao L, Bottaro G, Marchetti F, Pineider F, Poneti G, Samaritani S, Labella L. Stoichiometrically Controlled Assembly of Lanthanide Molecular Complexes of the Heteroditopic Divergent Ligand 4'-(4-Pyridyl)-2,2':6',2″-terpyridine N-Oxide in Hypodentate or Bridging Coordination Modes. Structural, Magnetic, and Photoluminescence Studies. Inorg Chem 2021; 61:265-278. [PMID: 34904436 DOI: 10.1021/acs.inorgchem.1c02809] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mononuclear rare-earth tris-β-diketonato complexes RE(tta)3dme [RE = Y (1), La (2), Dy (3), or Eu (4); Htta = 2-thenoylacetone; dme = 1,2-dimethoxyethane] react cleanly at room temperature in a 1:1 molar ratio with the heteroditopic divergent ligand 4'-(4-pyridyl)-2,2':6',2″-terpyridine N-oxide (pyterpyNO) to yield RE2(tta)6(pyterpyNO)n, where n = 2 for RE = Y (5), Dy (6), or Eu (7) and n = 3 for RE = La (8). The crystal structure of 5 revealed a dinuclear compound with two pyterpyNO's bridging through the oxygen atom in a hypodentate mode leaving the terpyridine moieties uncoordinated. Using a metal:pyterpyNO molar ratio of 2 for RE = Y (9), Dy (10), or Eu (11), it was possible to isolate the molecular complexes RE4(tta)12(pyterpyNO)2, while using a 5:3 molar ratio, the product La5(tta)12(pyterpyNO)3 (12) can be obtained. 89Y nuclear magnetic resonance spectroscopy revealed two different yttrium centers at room temperature for 9. An X-ray diffraction study of 10 showed a symmetrical tetranuclear structure resulting from the coordination of two Dy(tta)3 fragments to the two hypodentate terpyridines of the dinuclear unit and presenting two different coordination sites for metals with coordination numbers of 8 and 9. Magnetic studies of 6 and 10 revealed the presence of an antiferromagnetic interaction between the two Dy(III) atoms bound by the NO bridges. These compounds displayed a slow relaxing magnetization through Orbach (6) and Raman (10) processes in the absence of an applied magnetic field; the rate increased upon application of a 1 kOe field. 7 and 11 showed a bright red emission typical of Eu3+. The two complexes have similar emission properties mainly determined by the employed β-diketonato ligands.
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Affiliation(s)
- Lorenzo Fioravanti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Luca Bellucci
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy.,CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche e Tecnologie dei Materiali (DSCTM), Consiglio Nazionale delle Ricerche, Piazzale A. Moro 7, 00185 Roma, Italy.,Dipartimento di Scienze Chimiche and INSTM, Università di Padova, 1-35131 Padova, Italy
| | - Gregorio Bottaro
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Francesco Pineider
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Giordano Poneti
- Instituto de Química, Universidade Federal do Rio de Janeiro, Avenida Athos da Silveira Ramos, 149, Centro de Tecnologia-Cidade Universitária, 21941-909 Rio de Janeiro, Brazil
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy.,CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
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8
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Bellucci L, Bottaro G, Labella L, Marchetti F, Samaritani S, Belli Dell'Amico D, Armelao L. 1D-Zigzag Eu 3+/Tb 3+ Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission. Materials (Basel) 2021; 14:ma14216445. [PMID: 34771972 PMCID: PMC8585447 DOI: 10.3390/ma14216445] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 12/03/2022]
Abstract
Two homometallic Coordination Polymers (CPs) with composition [Ln(hfac)3bipy]n (Ln3+ = Eu3+, 1, and Tb3+, 2; hfac = hexafluoroacetylacetonato, bipy = 4,4′-bipyridine) were used to develop a family of ratiometric luminescent thermometers containing Eu3+ and Tb3+ as red and green emitters, respectively. The thermometric properties of pure CPs and of their mixtures having an Eu3+/Tb3+ molar ratio of 1:1, 1:3, 1:5, and 1:10 (samples: Eu1Tb1, Eu1Tb3, Eu1Tb5, and Eu1Tb10) were studied in the 83–383 K temperature range. Irrespective of the chemical composition, we observed similar thermometric responses characterized by broad applicative temperature ranges (from 100 to 165 K wide), and high relative thermal sensitivity values (Sr), up to 2.40% K−1, in the physiological temperature range (298–318 K). All samples showed emissions endowed with peculiar and continuous color variation from green (83 K) to red (383 K) that can be exploited to develop a colorimetric temperature indicator. At fixed temperature, the color of the emitted light can be tuned by varying composition and excitation wavelength.
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Affiliation(s)
- Luca Bellucci
- Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia, Consiglio Nazionale delle Ricerche, ICMATE-CNR and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy;
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy; (F.M.); (S.S.); (D.B.D.)
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, I-35131 Padova, Italy;
| | - Gregorio Bottaro
- Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia, Consiglio Nazionale delle Ricerche, ICMATE-CNR and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy;
- Correspondence: (G.B.); (L.L.); Tel.: +39-049-8275275 (G.B.); +39-050-2219262 (L.L.)
| | - Luca Labella
- Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia, Consiglio Nazionale delle Ricerche, ICMATE-CNR and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy;
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy; (F.M.); (S.S.); (D.B.D.)
- Correspondence: (G.B.); (L.L.); Tel.: +39-049-8275275 (G.B.); +39-050-2219262 (L.L.)
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy; (F.M.); (S.S.); (D.B.D.)
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy; (F.M.); (S.S.); (D.B.D.)
| | - Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy; (F.M.); (S.S.); (D.B.D.)
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche and INSTM, Università di Padova, via Marzolo 1, I-35131 Padova, Italy;
- Dipartimento di Scienze Chimiche e Tecnologie dei Materiali (DSCTM), Consiglio Nazionale delle Ricerche, Piazzale A. Moro 7, 00185 Rome, Italy
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9
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Hyeraci M, Scalcon V, Folda A, Labella L, Marchetti F, Samaritani S, Rigobello MP, Dalla Via L. New Platinum(II) Complexes Affecting Different Biomolecular Targets in Resistant Ovarian Carcinoma Cells. ChemMedChem 2021; 16:1956-1966. [PMID: 33751814 PMCID: PMC8252049 DOI: 10.1002/cmdc.202100075] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/04/2021] [Indexed: 12/15/2022]
Abstract
Resistance to platinum-based anticancer drugs represents an important limit for their clinical effectiveness and one of the most important field of investigation in the context of platinum compounds. From our previous studies, PtII complexes containing the triphenylphosphino moiety have been emerging as promising agents, showing significant cytotoxicity to resistant ovarian carcinoma cells. Two brominated triphenylphosphino trans-platinum derivatives were prepared and evaluated on human tumor cell lines, sensitive and resistant to cisplatin. The new complexes exert a notable antiproliferative effect on resistant ovarian carcinoma cells, showing a remarkable intracellular accumulation and the ability to interact with different intracellular targets. The interaction with DNA, the collapse of mitochondrial transmembrane potential, and the impairment of intracellular redox state were demonstrated. Moreover, a selectivity towards the selenocysteine of thioredoxin reductase was observed. The mechanism of action is discussed with regard to the resistance phenomenon in ovarian carcinoma cells.
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Affiliation(s)
- Mariafrancesca Hyeraci
- Department of Pharmaceutical and Pharmacological SciencesUniversity of PadovaVia F. Marzolo, 535131PadovaItaly
| | - Valeria Scalcon
- Department of Biomedical SciencesUniversity of PadovaVia U. Bassi 58/b35131PadovaItaly
| | - Alessandra Folda
- Department of Biomedical SciencesUniversity of PadovaVia U. Bassi 58/b35131PadovaItaly
| | - Luca Labella
- Department of Chemistry and Industrial ChemistryUniversity of PisaVia G. Moruzzi 1356124PisaItaly
| | - Fabio Marchetti
- Department of Chemistry and Industrial ChemistryUniversity of PisaVia G. Moruzzi 1356124PisaItaly
| | - Simona Samaritani
- Department of Chemistry and Industrial ChemistryUniversity of PisaVia G. Moruzzi 1356124PisaItaly
| | - Maria Pia Rigobello
- Department of Biomedical SciencesUniversity of PadovaVia U. Bassi 58/b35131PadovaItaly
| | - Lisa Dalla Via
- Department of Pharmaceutical and Pharmacological SciencesUniversity of PadovaVia F. Marzolo, 535131PadovaItaly
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10
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Bellucci L, Labella L, Marchetti F, Pineider F, Poneti G, Samaritani S. Magnetic relaxation in dysprosium and terbium 1D-zigzag coordination chains having only 4,4′-bipyridine as connector. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Agnarelli L, Fioco D, Belli Dell' Amico D, Labella L, Marchetti F, Samaritani S. Facile nucleophilic substitution of coordinated acetonitrile in trans-[PtCl4(NCMe)(PPh3)]. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Bellucci L, Bottaro G, Labella L, Causin V, Marchetti F, Samaritani S, Dell'Amico DB, Armelao L. Composition-Thermometric Properties Correlations in Homodinuclear Eu 3+ Luminescent Complexes. Inorg Chem 2020; 59:18156-18167. [PMID: 33302620 PMCID: PMC8016189 DOI: 10.1021/acs.inorgchem.0c02611] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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A family of homodinuclear Ln3+ (Ln3+ = Gd3+, Eu3+) luminescent
complexes with the general
formula [Ln2(β-diketonato)6(N-oxide)y] has been developed to study
the effect of the β-diketonato and N-oxide
ligands on their thermometric properties. The investigated complexes
are [Ln2(tta)6(pyrzMO)2] (Ln = Eu
(1·C7H8), Gd (5)), [Ln2(dbm)6(pyrzMO)2] (Ln = Eu
(2), Gd (6)), [Ln2(bta)6(pyrzMO)2] (Ln = Eu (3), Gd (7)), [Ln2(hfac)6(pyrzMO)3] (Ln =
Eu (4), Gd (8)) (pyrzMO = pyrazine N-oxide, Htta = thenoyltrifluoroacetone, Hdbm = dibenzoylmethane,
Hbta = benzoyltrifluoroacetone, Hhfac = hexafluoroacetylacetone, C7H8 = toluene), and their 4,4′-bipyridine N-oxide (bipyMO) analogues. Europium complexes emit a bright
red light under UV radiation at room temperature, whose intensity
displays a strong temperature (T) dependence between
223 and 373 K. This remarkable variation is exploited to develop a
series of luminescent thermometers by using the integrated intensity
of the 5D0 → 7F2 europium transition as the thermometric parameter (Δ). The
effect of different β-diketonato and N-oxide
ligands is investigated with particular regard to the shape of thermometer
calibration (Δ vs T) and relative thermal sensitivity
curves: i.e.. the change in Δ per degree of temperature variation
usually indicated as Sr (% K–1). The thermometric properties are determined by the presence of
two nonradiative deactivation channels, back energy transfer (BEnT)
from Eu3+ to the ligand triplet levels and ligand to metal
charge transfer (LMCT). In the complexes bearing tta and dbm ligands,
whose triplet energy is ca. 20000 cm–1, both deactivation
channels are active in the same temperature range, and both contribute
to determine the thermometric properties. Conversely, with bta and
hfac ligands the response of the europium luminescence to temperature
variation is ruled by LMCT channels since the high triplet energy
(>21400 cm–1) makes BEnT ineffective in the investigated
temperature range. A family of
homodinuclear Eu3+ luminescent complexes
with the general formula [Ln2(β-diketonato)6(N-oxide)y] (y = 2, 3) was developed to study the effect of the β-diketonato
and N-oxide ligands on the thermometric properties
of the complexes. In this way, an effective tuning of the system’s
thermometric properties can be achieved.
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Affiliation(s)
- Luca Bellucci
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy.,Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Gregorio Bottaro
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy.,Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Luca Labella
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy.,Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Valerio Causin
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale and CIRCC, Università di Pisa, via Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Lidia Armelao
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy.,Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
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13
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Bondi R, Dalla Via L, Hyeraci M, Pagot G, Labella L, Marchetti F, Samaritani S. Cytotoxicity and DNA interaction in a series of aryl terminated iminopyridine Pt(II) complexes. J Inorg Biochem 2020; 216:111335. [PMID: 33360320 DOI: 10.1016/j.jinorgbio.2020.111335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/15/2020] [Accepted: 12/05/2020] [Indexed: 01/01/2023]
Abstract
A series of iminopyridine complexes of platinum(II), bearing a flexible diethereal, aryl terminated residue, where the size of aryl group is varied from phenyl to 9-anthracenyl, was synthesized. The new complexes are soluble and stable in DMSO/H2O mixtures. Besides the metal center, aryl groups are available for further interactions with DNA, due to the good side chain flexibility. The new aryl functionalized iminopyridine dichlorido platinum(II) complexes show a significant antiproliferative activity on ovarian carcinoma cells and notably, complex 13 is able to overcome cisplatin resistance. The study of the interaction mode of 13 with DNA highlighted the ability to form a molecular complex characterized by a dual (intercalative and groove binding) geometry. The complex is also able to covalently add to DNA even though interstrand cross-links appear significantly hampered with respect to cisplatin. The interactions with the macromolecule are discussed in view of the observed cell effect.
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Affiliation(s)
- Riccardo Bondi
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Lisa Dalla Via
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (C.I.R.C.M.S.B.), Bari, Italy; Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Via F. Marzolo 5, Padova I-35131, Italy.
| | - Mariafrancesca Hyeraci
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Via F. Marzolo 5, Padova I-35131, Italy
| | - Gioele Pagot
- Dipartimento di Ingegneria Industriale, Università degli Studi di Padova, Via F. Marzolo 9, Padova I-35131, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy; Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (C.I.R.C.M.S.B.), Bari, Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy; Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (C.I.R.C.M.S.B.), Bari, Italy.
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14
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Hyeraci M, Colalillo M, Labella L, Marchetti F, Samaritani S, Scalcon V, Rigobello MP, Dalla Via L. Platinum(II) Complexes Bearing Triphenylphosphine and Chelating Oximes: Antiproliferative Effect and Biological Profile in Resistant Cells. ChemMedChem 2020; 15:1464-1472. [DOI: 10.1002/cmdc.202000165] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 05/27/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Mariafrancesca Hyeraci
- Department of Pharmaceutical and Pharmacological SciencesUniversità di Padova Via F. Marzolo, 5 35131 Padova Italy
| | - Marialuigia Colalillo
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa Via G. Moruzzi 13 56124 Pisa Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa Via G. Moruzzi 13 56124 Pisa Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa Via G. Moruzzi 13 56124 Pisa Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa Via G. Moruzzi 13 56124 Pisa Italy
| | - Valeria Scalcon
- Department of Biomedical SciencesUniversità di Padova Via U. Bassi 58/b 35131 Padova Italy
| | - Maria Pia Rigobello
- Department of Biomedical SciencesUniversità di Padova Via U. Bassi 58/b 35131 Padova Italy
| | - Lisa Dalla Via
- Department of Pharmaceutical and Pharmacological SciencesUniversità di Padova Via F. Marzolo, 5 35131 Padova Italy
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15
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Bondi R, Biver T, Dalla Via L, Guarra F, Hyeraci M, Sissi C, Labella L, Marchetti F, Samaritani S. DNA interaction of a fluorescent, cytotoxic pyridinimino platinum(II) complex. J Inorg Biochem 2020; 202:110874. [DOI: 10.1016/j.jinorgbio.2019.110874] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/05/2019] [Accepted: 09/28/2019] [Indexed: 12/22/2022]
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16
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De Bellis J, Bellucci L, Bottaro G, Labella L, Marchetti F, Samaritani S, Belli Dell'Amico D, Armelao L. Single-crystal-to-single-crystal post-synthetic modifications of three-dimensional LOFs (Ln = Gd, Eu): a way to modulate their luminescence and thermometric properties. Dalton Trans 2020; 49:6030-6042. [PMID: 32319491 DOI: 10.1039/d0dt00449a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Single-crystal-to-single-crystal post-synthetic modifications of {[Ln2(H2L)3(DMF)4]·2DMF}n LOFs (Ln = Gd, Eu) to modulate their luminescence and thermometric properties.
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Affiliation(s)
- Jacopo De Bellis
- Dipartimento di Chimica e Chimica Industriale and CIRCC
- Università di Pisa
- Italy
| | - Luca Bellucci
- Dipartimento di Scienze Chimiche
- Università di Padova
- Italy
| | - Gregorio Bottaro
- Dipartimento di Scienze Chimiche
- Università di Padova
- Italy
- CNR ICMATE and INSTM
- Dipartimento di Scienze Chimiche
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale and CIRCC
- Università di Pisa
- Italy
- CNR ICMATE and INSTM
- Dipartimento di Scienze Chimiche
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC
- Università di Pisa
- Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC
- Università di Pisa
- Italy
| | | | - Lidia Armelao
- Dipartimento di Scienze Chimiche
- Università di Padova
- Italy
- CNR ICMATE and INSTM
- Dipartimento di Scienze Chimiche
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17
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Fioco D, Belli Dell'Amico D, Labella L, Marchetti F, Samaritani S. A Sound Sequence to Triphenylphosphino Dibromoplatinum(II) Complexes – Solvothermal Preparation of
trans
‐[PtBr(µ‐Br)(PPh
3
)]
2. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- David Fioco
- Dipartimento di Chimica e Chimica Industriale Università di Pisa Via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale Università di Pisa Via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale Università di Pisa Via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale Università di Pisa Via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale Università di Pisa Via Giuseppe Moruzzi 13 56124 Pisa Italy
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18
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Armelao L, Belli Dell'Amico D, Bellucci L, Bottaro G, Ciattini S, Labella L, Manfroni G, Marchetti F, Mattei CA, Samaritani S. Homodinuclear Lanthanide Complexes with the Divergent Heterotopic 4,4′‐Bipyridine
N
‐Oxide (bipyMO) Ligand. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800747] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Lidia Armelao
- Dipar timento di Scienze Chimiche and INSTM Università di Padova via Marzolo 1 35131 Padova Italy
- CNR I CMATE and INSTM Dipartimento di Scienze Chimiche Università di Padova via Marzolo 1 35131 Padova Italy
| | - Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale Università di Pisa via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Luca Bellucci
- Dipar timento di Scienze Chimiche and INSTM Università di Padova via Marzolo 1 35131 Padova Italy
- Dipartimento di Chimica e Chimica Industriale Università di Pisa via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Gregorio Bottaro
- CNR I CMATE and INSTM Dipartimento di Scienze Chimiche Università di Padova via Marzolo 1 35131 Padova Italy
| | - Samuele Ciattini
- Dipartimento di Chimica Centro di Cristallografia Strutturale Università degli Studi di Firenze Via della Lastruccia 3 50019 Sesto Fiorentino Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale Università di Pisa via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Giacomo Manfroni
- Dipartimento di Chimica e Chimica Industriale Università di Pisa via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale Università di Pisa via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Carlo Andrea Mattei
- Dipartimento di Chimica e Chimica Industriale Università di Pisa via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale Università di Pisa via Giuseppe Moruzzi 13 56124 Pisa Italy
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19
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Belli Dell'Amico D, Labella L, Marchetti F, Ramello S, Samaritani S. Unprecedented pentanuclear mixed-valence Pt (II) -Pt (IV) complex anion in Q 2 [Pt 5 Cl 20 ] salts (Q = TBA, PPN). INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.07.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Armelao L, Belli Dell'Amico D, Bottaro G, Bellucci L, Labella L, Marchetti F, Mattei CA, Mian F, Pineider F, Poneti G, Samaritani S. 1D hetero-bimetallic regularly alternated 4f-3d coordination polymers based on N-oxide-4,4'-bipyridine (bipyMO) as a linker: photoluminescence and magnetic properties. Dalton Trans 2018; 47:8337-8345. [PMID: 29896583 DOI: 10.1039/c8dt00880a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Heterotopic divergent ligand N-oxide-4,4'-bipyridine (bipyMO) has been herein exploited for the preparation of hetero-bimetallic coordination polymers where Ln(hfac)3 and M(hfac)2 nodes regularly alternate (Hhfac = 1,1,1,5,5,5-hexafluoro-2,4-pentanedione), bipyMO being able to selectively use its two potential coordination sites to discriminate the metal ions. The synthesis of three coordination polymers, [Ln(hfac)3M(hfac)2(bipyMO)2]n (Ln = Eu, M = Zn, 1; Ln = Eu, M = Cu, 2, Ln = Dy, M = Co, 3), was carried out by reacting the appropriate [M(hfac)2(bipyMO)]n and [Ln(hfac)3] precursors in toluene in the presence of a given stoichiometric amount of bipyMO. The products were characterized by elemental analysis, X-ray powder diffraction, and FTIR spectroscopy. Single crystal X-ray diffraction studies carried out on 2 showed that it was formed by chains containing the hexa-coordinated 3d metal (Cu(hfac)2[N]2) and the octa-coordinated lanthanide (Eu(hfac)3[O]2) nodes, where [N] and [O] stand for the donor atom of the bridging divergent ligand. The X-ray powder diffraction patterns of the three compounds and the comparison of their cell constant values allowed establishing that the derivatives were isotypic. Photoluminescence (PL) studies on microcrystalline sample powders evidenced a bright red emission for 1 with an absolute PL quantum yield of 0.24. The sensitized emission of Eu3+ can be excited in a wide wavelength range, from UV to visible, up to ≈450 nm. Conversely, europium emissions are not detectable in 2 due to the presence of Cu(hfac)2(bipyMO) moieties whose strong absorption overlaps Eu3+ transitions. Magnetic measurements conducted on 3 revealed the presence of a weak ferromagnetic interaction below 2.1 K. An ac susceptibility study highlighted a slow relaxation of the magnetization of 3 with an applied static magnetic field of 0.1 T, which could be equally fitted with a Orbach-direct or a Raman-direct mechanism. No relaxation dynamics was detected without the application of a static magnetic field.
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Affiliation(s)
- Lidia Armelao
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131, Italy
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Belli Dell' Amico D, Fioco D, Labella L, Marchetti F, Samaritani S. Clean oxidations by iodobenzene dichloride: Platinum(IV) complexes containing triphenylphosphine. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.01.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Belli Dell'Amico D, Colalillo M, Dalla Via L, Dell'Acqua M, García-Argáez AN, Hyeraci M, Labella L, Marchetti F, Samaritani S. Synthesis and Reactivity of Cytotoxic Platinum(II) Complexes of Bidentate Oximes - A Step towards the Functionalization of Bioactive Complexes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale and CIRCC; Università di Pisa; via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Marialuigia Colalillo
- Dipartimento di Chimica e Chimica Industriale and CIRCC; Università di Pisa; via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Lisa Dalla Via
- Dipartimento di Scienze del Farmaco; Università degli Studi di Padova; Via F. Marzolo 5 35131 Padova Italy
| | - Martina Dell'Acqua
- Dipartimento di Chimica e Chimica Industriale and CIRCC; Università di Pisa; via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Aída N. García-Argáez
- Dipartimento di Scienze del Farmaco; Università degli Studi di Padova; Via F. Marzolo 5 35131 Padova Italy
| | - Mariafrancesca Hyeraci
- Dipartimento di Scienze del Farmaco; Università degli Studi di Padova; Via F. Marzolo 5 35131 Padova Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale and CIRCC; Università di Pisa; via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale and CIRCC; Università di Pisa; via Giuseppe Moruzzi 13 56124 Pisa Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale and CIRCC; Università di Pisa; via Giuseppe Moruzzi 13 56124 Pisa Italy
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23
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Belli Dell'Amico D, Ciattini S, Fioravanti L, Labella L, Marchetti F, Mattei CA, Samaritani S. The heterotopic divergent ligand N-oxide-4,4′-bipyridine (bipyMO) as directing-agent in the synthesis of oligo- or polynuclear heterometallic complexes. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.10.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Belli Dell' Amico D, Colalillo M, Labella L, Marchetti F, Samaritani S. Synthesis and reactivity of platinum(II) triphenylphosphino complexes with aromatic aldoximes. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.04.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Armelao L, Dell’Amico DB, Bellucci L, Bottaro G, Di Bari L, Labella L, Marchetti F, Samaritani S, Zinna F. Circularly Polarized Luminescence of Silica-Grafted Europium Chiral Derivatives Prepared through a Sequential Functionalization. Inorg Chem 2017; 56:7010-7018. [DOI: 10.1021/acs.inorgchem.7b00611] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lidia Armelao
- Dipartimento di Scienze
Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Daniela Belli Dell’Amico
- Dipartimento di
Chimica e Chimica Industriale, Università di Pisa and CIRCC, via
Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Luca Bellucci
- Dipartimento di
Chimica e Chimica Industriale, Università di Pisa and CIRCC, via
Giuseppe Moruzzi 13, I-56124 Pisa, Italy
- Dipartimento di Scienze
Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Gregorio Bottaro
- CNR ICMATE and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I-35131 Padova, Italy
| | - Lorenzo Di Bari
- Dipartimento di
Chimica e Chimica Industriale, Università di Pisa and CIRCC, via
Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Luca Labella
- Dipartimento di
Chimica e Chimica Industriale, Università di Pisa and CIRCC, via
Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Fabio Marchetti
- Dipartimento di
Chimica e Chimica Industriale, Università di Pisa and CIRCC, via
Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Simona Samaritani
- Dipartimento di
Chimica e Chimica Industriale, Università di Pisa and CIRCC, via
Giuseppe Moruzzi 13, I-56124 Pisa, Italy
| | - Francesco Zinna
- Dipartimento di
Chimica e Chimica Industriale, Università di Pisa and CIRCC, via
Giuseppe Moruzzi 13, I-56124 Pisa, Italy
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Belli Dell'Amico D, Di Giacomo A, Falchi L, Labella L, Marelli M, Evangelisti C, Lezzerini M, Marchetti F, Samaritani S. A convenient preparation of La2CuO4 from molecular precursors. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.11.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Belli Dell’ Amico D, Labella L, Marchetti F, Samaritani S, Hernández-Fuentes GA, García-Argáez AN, Dalla Via L. Synthesis and antiproliferative activity of ionic platinum(II) triphenylphosphino complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.09.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Armelao L, Belli Dell’Amico D, Bellucci L, Bottaro G, Labella L, Marchetti F, Samaritani S. A convenient synthesis of highly luminescent lanthanide 1D-zigzag coordination chains based only on 4,4′-bipyridine as connector. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Dalla Via L, García-Argáez AN, Agostinelli E, Belli Dell'Amico D, Labella L, Samaritani S. New trans dichloro (triphenylphosphine)platinum(II) complexes containing N-(butyl),N-(arylmethyl)amino ligands: Synthesis, cytotoxicity and mechanism of action. Bioorg Med Chem 2016; 24:2929-2937. [PMID: 27179449 DOI: 10.1016/j.bmc.2016.04.067] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/26/2016] [Accepted: 04/30/2016] [Indexed: 01/06/2023]
Abstract
Some new platinum(II) complexes have been prepared, of general formula trans-[PtCl2(PPh3){NH(Bu)CH2Ar}], where the dimension of the Ar residue in the secondary amines has been varied from small phenyl to large pyrenyl group. The obtained complexes, tested in vitro towards a panel of human tumor cell lines showed an interesting antiproliferative effect on both cisplatin-sensitive and -resistant cells. For the most cytotoxic derivative 2a the investigation on the mechanism of action highlighted the ability to induce apoptosis on resistant cells and interestingly, to inhibit the catalytic activity of topoisomerase II.
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Affiliation(s)
- Lisa Dalla Via
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Via F. Marzolo 5, 35131 Padova, Italy.
| | - Aída Nelly García-Argáez
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Via F. Marzolo 5, 35131 Padova, Italy
| | - Enzo Agostinelli
- Dipartimento di Scienze Biochimiche, Università degli Studi di Roma 'La Sapienza', Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
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Armelao L, Belli Dell'Amico D, Bellucci L, Bottaro G, Labella L, Marchetti F, Samaritani S. Smart Grafting of Lanthanides onto Silica via N,N-Dialkylcarbamato Complexes. Inorg Chem 2016; 55:939-47. [PMID: 26741027 DOI: 10.1021/acs.inorgchem.5b02535] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The grafting and the postgrafting functionalization of lanthanide ions on commercial amorphous silica have been herein carried out by using as a precursor the terbium N,N-dibutylcarbamato derivative [Tb(O2CNBu2)3]. The reaction of the complex with the surface silanols involved only a fraction of the carbamato ligands. The following protolytic substitution of the residual carbamato ligands was carried out by exploiting the Brønsted's acidity of the β-diketone dibenzoylmethane (Hdbm), in view of the antenna effect of the β-diketonato groups, which are commonly used in lanthanide photoluminescence studies. The reaction proceeded at room temperature in a clean and easy way affording the introduction of the chosen functionality in the lanthanide coordination sphere. The same procedure has been followed by using as a precursor the X-ray characterized heterometallic N,N-dibutylcarbamato complex [NH2Bu2]2[Ln4(CO3)(O2CNBu2)12] (Ln = Eu, Tb, Tm). In both cases, X-ray photoelectron spectroscopy evidenced the chemical implantation of the lanthanide ions on the silica surface, and photoluminescence studies pointed out the potentiality of the proposed synthetic approach in the preparation of highly luminescent materials.
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Affiliation(s)
- Lidia Armelao
- CNR IENI and INSTM, Dipartimento di Scienze Chimiche, Università di Padova , via Marzolo 1, I-35131, Padova, Italy
| | - Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , via Giuseppe Moruzzi 13, I-56124, Pisa, Italy
| | - Luca Bellucci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , via Giuseppe Moruzzi 13, I-56124, Pisa, Italy
| | - Gregorio Bottaro
- CNR IENI and INSTM, Dipartimento di Scienze Chimiche, Università di Padova , via Marzolo 1, I-35131, Padova, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , via Giuseppe Moruzzi 13, I-56124, Pisa, Italy
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , via Giuseppe Moruzzi 13, I-56124, Pisa, Italy
| | - Simona Samaritani
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , via Giuseppe Moruzzi 13, I-56124, Pisa, Italy
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Armelao L, Belli Dell’Amico D, Bottaro G, Falvo P, Labella L, Marchetti F, Parisi D, Samaritani S. From lanthanide chlorides to lanthanide pentafluorophenolates via lanthanide N,N-dialkylcarbamates. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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32
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Armelao L, Belli Dell'Amico D, Biagini P, Bottaro G, Chiaberge S, Falvo P, Labella L, Marchetti F, Samaritani S. Preparation of N,N-dialkylcarbamato lanthanide complexes by extraction of lanthanide ions from aqueous solution into hydrocarbons. Inorg Chem 2014; 53:4861-71. [PMID: 24779510 DOI: 10.1021/ic402936z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Lanthanides are easily extracted as N,N-dibutylcarbamato complexes from aqueous solutions of their chlorides into heptane solutions of dibutylamine saturated with CO2. The products are recovered in high yields and are soluble in hydrocarbons. The derivatives [Ln(O2CNBu2)3]n [Ln = Nd (1), Eu (2), Tb (3)], [NH2Bu2]2[Ln4(CO3)(O2CNBu2)12] [Ln = Tb (4), Sm (5), Eu (6)], and [Sm4(CO3)(O2CNBu2)10], 7, have thus been obtained. The crystal and molecular structure of 4 has been solved; the samarium and europium complexes 5 and 6 were found to be isostructural. Mass spectra of the complexes 1-3, 4, and 7 (in MeCN/toluene) reveal that equilibria are present in solution. Compound 2 has been reacted in toluene with NHBz2 in the presence of CO2 affording [NH2Bz2][Eu(O2CNBz2)4], 8, through a ligand exchange process. By thermal treatment, 8 afforded [Eu(O2CNBz2)3]n, 9. With a similar procedure [Sm(O2CNBz2)3]n, 10, was obtained from 5. According to the photoluminescence study carried out on solid samples of 2, 4, 5, 7, and 8, the metal centered f-f transitions represent the only effective way to induce lanthanide luminescence in these complexes.
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Affiliation(s)
- Lidia Armelao
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , via Risorgimento 35, I-56126 Pisa, Italy
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Belli Dell’Amico D, Labella L, Marchetti F, Mastrorilli P, Samaritani S, Todisco S. Oxidation by dioxygen of manganese(II) and iron(II) complexes. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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34
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Dalla Via L, García-Argáez AN, Adami A, Grancara S, Martinis P, Toninello A, Belli Dell’Amico D, Labella L, Samaritani S. Synthesis, antiproliferative and mitochondrial impairment activities of bis-alkyl-amino transplatinum complexes. Bioorg Med Chem 2013; 21:6965-72. [DOI: 10.1016/j.bmc.2013.09.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/06/2013] [Accepted: 09/10/2013] [Indexed: 01/08/2023]
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Dell'Amico DB, Labella L, Marchetti F, Samaritani S. The reactivity of the dinuclear halo-bridged cycloplatinated complex [Pt(μ-Cl){(κ2-P,C)P(OC6H4)(OPh)2}]2 towards neutral ligands. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.02.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Dell'Amico DB, Labella L, Marchetti F, Samaritani S. A convenient route to dinuclear chloro-bridged platinum(ii) derivatives vianitrile complexes. Dalton Trans 2012; 41:1389-96. [DOI: 10.1039/c1dt11709b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dell'Amico DB, Labella L, Marchetti F. Bent dinuclear platinum(II) halo-bridged carbonyl complexes. Molecules 2011; 16:6082-91. [PMID: 21775937 PMCID: PMC6264716 DOI: 10.3390/molecules16076082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 07/14/2011] [Accepted: 07/18/2011] [Indexed: 11/16/2022]
Abstract
Crystals of trans-Pt₂(μ-X)₂X₂(CO)₂ (X = Br, I) have been grown and their molecular and crystalline structures have been solved by X-ray diffraction methods. In both cases the dinuclear molecules are bent, with a bending angle of 164.6° and 156.5° for the bromide and the iodide, respectively. While the structure of the bromo-derivative is reported here for the first time, a modification of trans-Pt₂(μ-I)₂I₂(CO)₂ with planar centrosymmetric molecules is known. This appears to be a rare case of a platinum(II) halo-bridged derivative structurally characterized in both bent and planar forms.
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Affiliation(s)
- Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Risorgimento 35, I-56126 Pisa, Italy.
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Dell’Amico DB, Labella L, Marchetti F, Samaritani S. Convenient preparation of (η4-alkadiene)dichloroplatinum(II) complexes from [PtCl6]2− anions and their reduction to platinum(0) alkene complexes under phase-transfer catalysis conditions. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.12.043] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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39
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Bacchi A, Belli Dell’ Amico D, Calderazzo F, Labella L, Pelizzi G, Marchetti F, Samaritani S. Reactions of the homoleptic acetonitrile complexes of palladium and platinum with diethylamine. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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40
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Belli Dell’Amico D, Calderazzo F, Costa L, Franchi E, Gini L, Labella L, Marchetti F. Octanuclear μ-oxo N,N-diethylcarbamato derivatives of titanium(IV) obtained by a high-yielding hydrolytic process. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.04.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
N,N-di- iso-propylcarbamato derivatives of boron(III) have been synthesized from di-iso-propylamine and boron trichloride in the presence of carbon dioxide. With a large excess of amine, a single boron product was obtained, [NH2i)Pr2][B(O2CNiPr2)4], 1, while with a lower excess a mixture of 1 and of the dinuclear derivative [B2(O2CNiPr2)6], 2, was produced. By heating in vacuo at 60 degrees C, solid 1 slowly converted to 2. The transformation was reversible, 2 giving 1 back with di- iso-propylamine under carbon dioxide at atmospheric pressure. The molecular structure of both compounds was established by X-ray diffraction methods. Compound 1 is constituted by ion-pairs where the ammonium cation is hydrogen-bonded to the mononuclear anion. Compound 2 is a dinuclear species with two bridging carbamato ligands. In both derivatives, boron shows tetrahedral coordination. As IR- and 1H NMR spectra of the two species are well differentiated, it is possible to monitor the interconversion of 1 and 2 by both spectroscopic methods.
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Belli Dell’Amico D, Calderazzo F, Carbonaro L, Labella L, Libri S, Marchetti F. Competitive ligation between carbon monoxide and propiononitrile in chloro-complexes of platinum(II). Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2007.05.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Belli Dell'Amico D, Bini R, Calderazzo F, Carbonaro L, Labella L, Vitullo A. A Kinetic Study of the Competition between Carbon Monoxide and Alkenes in Chloro Complexes of Platinum(II). Organometallics 2006. [DOI: 10.1021/om060499r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Risorgimento 35, I-56126 Pisa, Italy
| | - Riccardo Bini
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Risorgimento 35, I-56126 Pisa, Italy
| | - Fausto Calderazzo
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Risorgimento 35, I-56126 Pisa, Italy
| | - Laura Carbonaro
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Risorgimento 35, I-56126 Pisa, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Risorgimento 35, I-56126 Pisa, Italy
| | - Anna Vitullo
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Risorgimento 35, I-56126 Pisa, Italy
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46
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Belli Dell’Amico D, Calderazzo F, Curiardi M, Labella L, Marchetti F. A planar silver complex of 2,2′:6′,2″:6″,2‴-quaterpyridine. INORG CHEM COMMUN 2005. [DOI: 10.1016/j.inoche.2005.04.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Dell'Amico DB, Bini R, Calderazzo F, Carbonaro L, Labella L, Vitullo A. Competition between Carbon Monoxide and Alkenes in Chloro Complexes of Platinum(II). Organometallics 2005. [DOI: 10.1021/om050325u] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Riccardo Bini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Fausto Calderazzo
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Laura Carbonaro
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Anna Vitullo
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
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48
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Belli Dell'Amico D, Calderazzo F, Englert U, Labella L, Marchetti F, Specos M. New
N
,
N
‐Diisopropylcarbamato Complexes of Ruthenium(
II
) as Catalytic Precursors for Olefin Hydrogenation. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400014] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daniela Belli Dell'Amico
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy, Fax: (internat.) + 39‐050‐2219‐246
| | - Fausto Calderazzo
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy, Fax: (internat.) + 39‐050‐2219‐246
| | - Ulli Englert
- Institut für Anorganische Chemie der RWTH, Professor‐Pirlet‐Strasse 1, 52074 Aachen, Germany
| | - Luca Labella
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy, Fax: (internat.) + 39‐050‐2219‐246
| | - Fabio Marchetti
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy, Fax: (internat.) + 39‐050‐2219‐246
| | - Monica Specos
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy, Fax: (internat.) + 39‐050‐2219‐246
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Dell'Amico DB, Calderazzo F, Labella L, Marchetti F, Martini M, Mazzoncini I. N,N-Dimethylcarbamato derivatives of magnesium starting from the metal oxide. CR CHIM 2004. [DOI: 10.1016/j.crci.2004.04.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Belli Dell' Amico D, Calderazzo F, Curiardi M, Labella L, Marchetti F. Bis-qtpy (qtpy = 2,2‘:6‘,2‘ ‘:6‘ ‘,2‘ ‘‘-quaterpyridine) Metal Complexes, [M(qtpy)2]2+. Inorg Chem 2004; 43:5459-65. [PMID: 15310228 DOI: 10.1021/ic049595f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reactions of perchlorates of iron(II), nickel(II), and zinc(II) with 2,2':6',2'':6'',2'"-quaterpyridine (qtpy) gave the first crystallographically established bis-qtpy metal complexes of formula [M(qtpy)(2)][ClO(4)](2) (M = Fe, Ni, Zn). Coordination of two terdentate quaterpyridines to the same center produces a distorted octahedron of six nitrogen atoms around the metal, leaving two pendant pyridyl groups, one for each quaterpyridine. For the diamagnetic zinc system, an NMR investigation has been carried out in order to establish the conditions to obtain the intermediate mono-qtpy complex, of formula [Zn(qtpy)(H(2)O)(2)][ClO(4)](2), which has also been crystallographically established. The corresponding hexafluorophosphate derivatives [M(qtpy)(2)][PF(6)](2) (M = Ni and Zn) were prepared in DMF at room temperature.
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Affiliation(s)
- Daniela Belli Dell' Amico
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via del Risorgimento 35, I-56126 Pisa, Italy.
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