1
|
Reigosa F, Polo PM, Pereira MT, Vila JM. Reactivity of Schiff base-[C,N,S] pincer palladacycles: hydrolysis renders singular trinuclear, tetranuclear, and heteropentanuclear Pd 3W 2 coordinated complexes. Dalton Trans 2024; 53:9680-9691. [PMID: 38661315 DOI: 10.1039/d4dt00756e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Treatment of the Schiff base ligands a-f with Li2[PdCl4]/NaAcO in methanol under reflux gave the single nuclear palladacycles 1a-1f, with the metal atom bonded to a terdentate monoanionic [C,N,S] iminic ligand and to a chloride ligand that completes the palladium coordination sphere. Reaction of 1a-1c with silver perchlorate/triphenylphosphine in acetone at room temperature yielded the single nuclear complexes 2a-2c as the perchlorate salts, after substitution of the chloride ligand by a triphenylphosphine. However, reaction of a-c with Na2[PdCl4]/NaAcO in methanol at room temperature also gave compounds 1a-1c albeit contaminated with small amounts of the corresponding free aldehyde (mixture A). Reaction of mixture A with silver perchlorate/triphenylphosphine in acetone at room temperature gave analogously 2a-2c with some of the corresponding free aldehyde (mixture B). Attempts to purify mixtures A and B via recrystallization produced single crystals of 5 and 6 respectively: two serendipitously formed complexes, bearing thiomethyl aniline and/or acetate ligands, and void of aldehyde or iminic residue; the structures contain eight- and six-membered rings of alternating palladium and nitrogen atoms, respectively. To clarify this situation the aniline itself was reacted with palladium(II) acetate or with Na2[PdCl4]; in the latter case after recrystallization a unique behavior is revealed, giving rise to a tetranuclear complex containing a Pd4N4 ring with three differing coordination environments on the palladium atoms. Treatment of 1d with Ph2PCH2PPh2 (dppm)/AgClO4 or with Ph2PCH2(PPh2)W(CO)5/AgClO4 gave 3d, with a mono-coordinated dppm ligand, and 4d, respectively; complex 3d could not be converted into 4d by reaction with W(CO)5(THF). Recrystallization of 4d gave a still further noticeable species, complex 8: a pentanuclear trans-configured heterometallic mixed valent Pd(II)/W(0) linear complex with the palladium atoms supported by two acetate and two thiomethyl aniline bridging ligands. The complexes were fully characterized by microanalysis, IR, 1H, and 31P NMR spectroscopies, as appropriate. The X-ray single-crystal analyses for compounds 1b, 5, 6, 7 and 8 are described.
Collapse
Affiliation(s)
- Francisco Reigosa
- Departamento de Química Inorgánica, Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - Paula M Polo
- Departamento de Química Inorgánica, Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - M Teresa Pereira
- Departamento de Química Inorgánica, Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - José M Vila
- Departamento de Química Inorgánica, Universidad de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| |
Collapse
|
2
|
Ryabov AD. The Exchange of Cyclometalated Ligands. Molecules 2021; 26:E210. [PMID: 33401624 PMCID: PMC7795987 DOI: 10.3390/molecules26010210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 12/29/2020] [Accepted: 12/29/2020] [Indexed: 11/16/2022] Open
Abstract
Reactions of cyclometalated compounds are numerous. This account is focused on one of such reactions, the exchange of cyclometalated ligands, a reaction between a cyclometalated compound and an incoming ligand that replaces a previously cyclometalated ligand to form a new metalacycle: + H-C*~Z ⇄ + H-C~Y. Originally discovered for PdII complexes with Y/Z = N, P, S, the exchange appeared to be a mechanistically challenging, simple, and convenient routine for the synthesis of cyclopalladated complexes. Over four decades it was expanded to cyclometalated derivatives of platinum, ruthenium, manganese, rhodium, and iridium. The exchange, which is also questionably referred to as transcyclometalation, offers attractive synthetic possibilities and assists in disclosing key mechanistic pathways associated with the C-H bond activation by transition metal complexes and C-M bond cleavage. Both synthetic and mechanistic aspects of the exchange are reviewed and discussed.
Collapse
Affiliation(s)
- Alexander D Ryabov
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
| |
Collapse
|
3
|
Thakur V, Thirupathi N. Syntheses and structural aspects of dinuclear cycloplatinated N,N′,N″-triarylguanidinate(2−) complexes with a novel tridentate μ2-κ2(C,N):κ1N coordination mode. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
4
|
Organometallic binuclear Pd(II) complex: Synthesis, crystal structure and in-vitro antitumor activity study. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.05.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
5
|
Mishra V, Thirupathi N. Critical Role of Anions in Platinum(II) Precursors upon the Structural Motifs of Six-Membered Cycloplatinated N, N', N″-Triarylguanidines. ACS OMEGA 2018; 3:6075-6090. [PMID: 31458795 PMCID: PMC6644913 DOI: 10.1021/acsomega.8b00782] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 05/24/2018] [Indexed: 05/20/2023]
Abstract
The reactions of cis-[Pt(OAc)2(DMSO)2] with 2 equiv of sym N,N',N″-triarylguanidines, [ArN=C(NHAr)2], in toluene under reflux condition for 8 h afforded six-membered cycloplatinated guanidines, [Pt{κ2(C,N)}(OAc){κ1 N(ArN=C(NHAr)2)}] [sym = symmetrical; Ar = 2-MeC6H4 (1) and 2,4-Me2C6H3 (2)], in 82 and 84% yields, respectively. The salt metathesis reaction of 1 with 1 equiv of AgTFA in CH2Cl2 at room temperature (RT) afforded [Pt{κ2(C,N)}(TFA){κ1 N(ArN=C(NHAr)2)}] (3) in 94% yield. The reaction of cis-[Pt(TFA)2(DMSO)2] with 1 equiv of [ArN=C(NHAr)2] in toluene under reflux condition for 8 h afforded six-membered cycloplatinated guanidines, [Pt{κ2(C,N)}(TFA)(DMSO)] [Ar = 2-MeC6H4 (4), 4-MeC6H4 (5), 2,4-Me2C6H3 (6), and 2-(MeO)C6H4 (7)], in ≥73% yields. The reaction of trans-[PtCl2(PhCN)2] with 2 equiv of [ArN=C(NHAr)2] in toluene under reflux condition for 48 h afforded trans-[PtCl2{ArN=C(NHAr)2}2] [Ar = 2-MeC6H4 (8) and 2,4-Me2C6H3 (9)] in 90 and 45% yields, respectively. Complexes 8 and 9 were separately refluxed in MeOH for 8 h to afford six-membered cycloplatinated guanidines, [Pt{κ2(C,N)}(μ-Cl)]2 (10 and 11), in 93 and 96% yields, respectively, with concomitant formation of the respective guanidinium salts, [(ArNH)3C]Cl, as the byproduct. Platinacycle 10 was treated with 2 equiv of AgTFA in CH2Cl2 at RT to afford six-membered cycloplatinated guanidine, [Pt{κ2(C,N)}(μ-TFA)]2 (12), in 94% yield. The new compounds were characterized by analytical techniques and multinuclear NMR (1H, 13C, and 195Pt) spectroscopy, and further, molecular structures of 10 compounds were determined by single-crystal X-ray diffraction. The structural motif in 1·1/2CH2Cl2 and 3 is novel in that it contains a planar six-membered [Pt{κ2(C,N)}] unit and a nonplanar eight-membered [Pt{κ2(N,O)}] ring, wherein OAc and the guanidine ligands are linked through a N-H···O hydrogen bond. The six-membered cycloplatinated structural motifs present in 10/11·C7H8 and 12·CH2Cl2 are also unprecedented in the literature. The number and nature of solution species of new complexes were unambiguously investigated by detailed NMR studies. The critical role of anions in Pt(II) precursors upon the course of cycloplatination and thus the motifs in the products were addressed. Plausible mechanisms of cycloplatination reactions are discussed.
Collapse
|
6
|
Hu ZX, Ma N, Zhang JH, Hu WP, Wang HX. Palladium meditated CPhenyl–H bond activation of 2-furylimines versus tert-2-furylbenzylamines. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
7
|
Melník M, Mikuš P, Holloway CE. Platinum organometallic complexes: classification and analysis of crystallographic and structural data for dimeric complexes. REV INORG CHEM 2014. [DOI: 10.1515/revic-2013-0010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThis review covers over 260 examples of dimeric organoplatinum complexes. Platinum is predominantly found in the oxidation states +2 and +4, but with some examples of 0, +1, +2.5, +3, and of mixed-valence as well. A number of coordination state geometries are observed, of which the most common is essentially square-planar at Pt(II), a distorted octahedral at Pt(IV), and some examples of trigonal planar and trigonal bipyramidal as well. The most common ligands are methyl (Me), carbonyl and PX3. The shortest Pt-Pt bond distance is 245.1(1) pm. The mean Pt-Pt bond distance increases in the order: 261.1 pm [Pt(2.5)-Pt(2.5)]<261.3 pm [Pt(III)-Pt(III)]<262.4 pm [Pt(I)-Pt(I)]<270.3 pm [Ot(II)-Pt(II)]<277.2 pm [Pt(0)-Pt(0)]<282.6 pm [Pt(II)-Pt(II)]. The Pt…Pt no-bonding distances are: Pt(II)…Pt(II), 3.008–17.959 pm; Pt(IV)…Pt(IV), 327.5–768.0 pm; Pt(II)-Pt(0), 378.6 pm and Pt(II)…Pt(IV), 389 pm. There are several relationships pointed out between the Pt-Pt distances, Pt-X-Pt bridge angles and covalent radii of coordinated atoms. Several examples contain two crystallographically independent molecules within the same crystal, differing mostly by degree of distortion, which are examples of distortion isomerism.
Collapse
Affiliation(s)
- Milan Melník
- 1Faculty of Pharmacy, Department of Pharmaceutical Analysis and Nuclear Pharmacy, Comenius University in Bratislava, Odbojárov 10, SK-832 32 Bratislava, Slovak Republic
| | - Peter Mikuš
- 1Faculty of Pharmacy, Department of Pharmaceutical Analysis and Nuclear Pharmacy, Comenius University in Bratislava, Odbojárov 10, SK-832 32 Bratislava, Slovak Republic
| | - Clive Edward Holloway
- 2Department of Chemistry, York University, 4700 Keele Street, North York M 3J 1P3, Ontario, Canada
| |
Collapse
|
8
|
Antelo JM, Adrio L, Bermúdez B, Martínez J, Teresa Pereira M, Ortigueira JM, López-Torres M, Vila JM. Spectroscopic and solid state characterization of bimetallic terdentate [C,N,S] thiosemicarbazone Palladium(II) metallacycles with bridging and chelating [P,P] diphosphine ligands. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.04.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
9
|
Elumalai P, Thirupathi N, Nethaji M. Dual Role of Acetate as a Nucleophile and as an Internal Base in Cycloplatination Reaction of sym-N,N′,N″-Triarylguanidines. Inorg Chem 2013; 52:1883-94. [DOI: 10.1021/ic302058u] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Palani Elumalai
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | | | | |
Collapse
|
10
|
Thiosemicarbazone platinacycles with tertiary phosphines. Preparation of novel heterodinuclear platinum–tungsten complexes. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.04.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
11
|
Complexes of Pd(II) and Pt(II) with 9-aminoacridine: reactions with DNA and study of their antiproliferative activity. Bioinorg Chem Appl 2011:98732. [PMID: 18364995 PMCID: PMC2266976 DOI: 10.1155/2007/98732] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Accepted: 05/10/2007] [Indexed: 12/05/2022] Open
Abstract
Four new metal complexes {M = Pd(II) or Pt(II)} containing the ligand 9-aminoacridine (9AA) were
prepared. The compounds were characterized by FT-IR and 1H, 13C, and 195Pt NMR spectroscopies. Crystal structure of the palladium complex of formulae [Pd(9AA)(μ-Cl)]2 · 2DMF was determined by X-ray diffraction. Two 9-acridine molecules in the imine form bind symmetrically to the metal ions in a bidentate fashion through the imine nitrogen atom and the C(1) atom of the aminoacridine closing a new five-membered ring. By reaction with phosphine or pyridine, the Cl bridges broke and compounds with general formulae [Pd(9AA)Cl(L)] (where L = PPh3 or py) were formed. A mononuclear complex of platinum of formulae [Pt(9AA)Cl(DMSO)] was
also obtained by direct reaction of 9-aminoacridine and the complex [PtCl2(DMSO2]. The capacity of the compounds to modify the secondary and tertiary structures of DNA was evaluated by means of circular dichroism and electrophoretic mobility. Both palladium and platinum compounds proved active in the modification of both the secondary and tertiary DNA structures. AFM images showed noticeable modifications of the morphology of the plasmid pBR322 DNA by the
compounds probably due to the intercalation of the complexes between base pairs of the DNA molecule. Finally, the palladium complex was tested for antiproliferative activity against three different human tumor cell lines. The results suggest that the palladium complex of formula [Pd(9AA)(μ-Cl)]2 has significant antiproliferative activity, although it is less active than cisplatin.
Collapse
|
12
|
Zucca A, Cordeschi D, Stoccoro S, Cinellu MA, Minghetti G, Chelucci G, Manassero M. Platinum(II)-Cyclometalated “Roll-over” Complexes with a Chiral Pinene-Derived 2,2′-Bipyridine. Organometallics 2011. [DOI: 10.1021/om200172h] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
13
|
Gopi K, Thirupathi N, Nethaji M. Synthesis, Reactivity, Structural Aspects, and Solution Dynamics of Cyclopalladated Compounds of N,N′,N′′-Tris(2-anisyl)guanidine. Organometallics 2011. [DOI: 10.1021/om1009445] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Kanniyappan Gopi
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | | | - Munirathinam Nethaji
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India
| |
Collapse
|
14
|
Fernández JJ, Fernández A, López-Torres M, Vázquez-García D, Rodríguez A, Varela A, Vila JM. Cyclometallated complexes derived from pyrimidin- and pyridazinehydrazones: Structural evidence of intermolecular “chelate metal ring” π–π interactions. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
15
|
Adrio L, Antelo JM, Ortigueira JM, Fernández JJ, Fernández A, Teresa Pereira M, Vila JM. The chemistry of N-benzylidene-1,4-phenylenediamine palladacycles: The crystal and molecular structure of the first tetranuclear palladacycle with bridging Ph2PCH2PPh2 ligands. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2008.12.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
16
|
Stromnova TA. Dinuclear and polynuclear palladium carboxylate complexes containing a Pd(μ-OCOR)2Pd group as a building block. RUSS J INORG CHEM+ 2008. [DOI: 10.1134/s0036023608130032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
17
|
Albert J, D’Andrea L, Bautista J, González A, Granell J, Font-Bardia M, Calvet T. Unexpected Structure of Palladacycles Containing Carboxylated Schiff Bases. Synthesis of Some Water-Soluble Metallacycles. Organometallics 2008. [DOI: 10.1021/om8006807] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joan Albert
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Lucía D’Andrea
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Jesús Bautista
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Asensio González
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Jaume Granell
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Mercè Font-Bardia
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| | - Teresa Calvet
- Departament de Química Inorgànica i Institut de Biomedicina (IBUB), Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain, Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Pl. Pius XII, s/n, 08028 Barcelona, Spain, and Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Universitat de Barcelona, Martí i Franquès, s/n, 08028 Barcelona, Spain
| |
Collapse
|
18
|
Vicente J, Arcas A, Gálvez-López MD, Juliá-Hernández F, Bautista D, Jones PG. Synthesis of Bis(2,6-dinitroaryl)palladium(II) and Mono(2,6-dinitroaryl)platinum(II) Complexes. A New Example of the Transphobia Effect and of Transmetalation from Pt to Hg. Organometallics 2008. [DOI: 10.1021/om701077y] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José Vicente
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Aptdo. 4021, E-30071 Murcia, Spain
| | - Aurelia Arcas
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Aptdo. 4021, E-30071 Murcia, Spain
| | - María-Dolores Gálvez-López
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Aptdo. 4021, E-30071 Murcia, Spain
| | - Francisco Juliá-Hernández
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Aptdo. 4021, E-30071 Murcia, Spain
| | - Delia Bautista
- SAI, Universidad de Murcia, Aptdo. 4021, E-30071 Murcia, Spain
| | - Peter G. Jones
- Institut für Anorganische and Analytische Chemie, Technische Universität Braunschweig, Postfach 3329, 38023 Braunschweig, Germany
| |
Collapse
|
19
|
Adrio L, Antelo JM, Ortigueira JM, Lata D, Pereira T, López-Torres M, Vila JM. Cycloplatination of Thiosemicarbazones Derived from Furane. Crystal and Molecular Structure of [{Pt[(OC4H2)C(Me)=NN=C(S)NHEt]}2{μ-Ph2P(CH2)2PPh2}]. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700244] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
20
|
Aguilar D, Aragüés MA, Bielsa R, Serrano E, Navarro R, Urriolabeitia EP. Divergent Behavior in the Cyclopalladation of Phosphorus Ylides and Iminophosphoranes. Organometallics 2007. [DOI: 10.1021/om7002877] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David Aguilar
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Miguel Angel Aragüés
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Raquel Bielsa
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Elena Serrano
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Rafael Navarro
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Esteban P. Urriolabeitia
- Departamento de Compuestos Organometálicos, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| |
Collapse
|
21
|
Mawo RY, Mustakim S, Young, VG, Hoffmann MR, Smoliakova IP. Endo-Effect-Driven Regioselectivity in the Cyclopalladation of (S)-2-tert-Butyl-4-phenyl-2-oxazoline. Organometallics 2007. [DOI: 10.1021/om061132p] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Relindis Y. Mawo
- Department of Chemistry, University of North Dakota, 151 Cornell Street, Stop 9024, Grand Forks, North Dakota 58202, and X-Ray Crystallographic Facility, Chemistry Department, University of Minnesota, 160 Kolthoff Hall, 207 Pleasant Street S.E., Minneapolis, Minnesota 55455
| | - Sheikh Mustakim
- Department of Chemistry, University of North Dakota, 151 Cornell Street, Stop 9024, Grand Forks, North Dakota 58202, and X-Ray Crystallographic Facility, Chemistry Department, University of Minnesota, 160 Kolthoff Hall, 207 Pleasant Street S.E., Minneapolis, Minnesota 55455
| | - Victor G. Young,
- Department of Chemistry, University of North Dakota, 151 Cornell Street, Stop 9024, Grand Forks, North Dakota 58202, and X-Ray Crystallographic Facility, Chemistry Department, University of Minnesota, 160 Kolthoff Hall, 207 Pleasant Street S.E., Minneapolis, Minnesota 55455
| | - Mark R. Hoffmann
- Department of Chemistry, University of North Dakota, 151 Cornell Street, Stop 9024, Grand Forks, North Dakota 58202, and X-Ray Crystallographic Facility, Chemistry Department, University of Minnesota, 160 Kolthoff Hall, 207 Pleasant Street S.E., Minneapolis, Minnesota 55455
| | - Irina P. Smoliakova
- Department of Chemistry, University of North Dakota, 151 Cornell Street, Stop 9024, Grand Forks, North Dakota 58202, and X-Ray Crystallographic Facility, Chemistry Department, University of Minnesota, 160 Kolthoff Hall, 207 Pleasant Street S.E., Minneapolis, Minnesota 55455
| |
Collapse
|
22
|
Capapé A, Crespo M, Granell J, Font-Bardía M, Solans X. A comparative study of the structures and reactivity of cyclometallated platinum compounds of N-benzylidenebenzylamines and cycloplatination of a primary amine. Dalton Trans 2007:2030-9. [PMID: 17502936 DOI: 10.1039/b618128g] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of cis-[PtCl(2)(dmso)2] with ligands 4-ClC(6)H(4)CHNCH(2)C(6)H(5) (1a) and 4-ClC(6)H(4)CHNCH(2)(4-ClC(6)H(4)) (1b) in the presence of sodium acetate and using either methanol or toluene as solvent produced the corresponding five-membered endo-metallacycles [PtCl{(4-ClC(6)H(3))CHNCH(2)C(6)H(5)}{SOMe(2)}] (2a) and [PtCl{(4-ClC(6)H(3))CHNCH(2)(4'-ClC(6)H(4))}{SOMe(2)}] (2b). An analogous reaction for ligands 2,6-Cl(2)C(6)H(3)CHNCH(2)C(6)H(5) (1c) and 2,6-Cl(2)C(6)H(3)CHNCH(2)(4-ClC(6)H(4)) (1d) produced five-membered exo-metallacycles [PtCl{(2,6-Cl(2)C(6)H(3))CHNCH(2)C(6)H(4)}{SOMe(2)}] (2c) and [PtCl{(2,6-Cl(2)C(6)H(3))CHNCH(2)(4'-ClC(6)H(3))}{SOMe(2)}] (2d) when the reaction was carried out in methanol and seven-membered endo-platinacycles [PtCl{(MeC(6)H(3))ClC(6)H(3)CHNCH(2)C(6)H(4)}{SOMe(2)}] (3c) and [PtCl{(MeC(6)H(3))ClC(6)H(3)CHNCH(2)(4'-ClC(6)H(3))}{SOMe(2)}] (3d) when toluene was used as a solvent. The reaction of 2,4,6-(CH(3))(3)C(6)H(2)CHNCH(2)(4-ClC(6)H(4)) (1e) produced in both solvents an exo-platinacycle [PtCl{(2,4,6-(CH(3))(3)C(6)H(2))CHNCH(2)(4'-ClC(6)H(3))}{SO(CH(3))(2)}] (2e). Cyclometallation of 4-chlorobenzylamine was also achieved to produce compound [PtCl{(4-ClC(6)H(3))CH(2)NH(2)}{SOMe(2)}] (2g). The reactions of endo- and exo-metallacycles with phosphines evidenced the higher lability of the Pt-N bond in exo-metallacycles while a comparative analysis of the crystal structures points out a certain degree of aromaticity in the endo-metallacycle.
Collapse
Affiliation(s)
- Alejandro Capapé
- Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 647, 08028, Barcelona, Spain
| | | | | | | | | |
Collapse
|
23
|
Petrović ZD, Djuran MI, Heinemann FW, Rajković S, Trifunović SR. Synthesis, structure, and hydrolytic reaction of trans-dichlorobis(diethanolamine-N)palladium(II) with N-acetylated L-histidylglycine dipeptide. Bioorg Chem 2006; 34:225-34. [PMID: 16889816 DOI: 10.1016/j.bioorg.2006.06.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2006] [Revised: 06/24/2006] [Accepted: 06/26/2006] [Indexed: 10/24/2022]
Abstract
The reaction of PdCl2, or K2PdCl4, with diethanolamine (DEA), in the molar ratio 1:2, affords the trans-[PdCl2(DEA)2] complex. X-ray structure analysis of this complex confirmed the formation of the trans-isomer. The complex crystallizes in the space group P42bc. The central Pd(II) ion is coordinated in an almost ideal square-planar fashion with a small deformation of the Cl-Pd-Cl angle (175.6(7) degrees) due to N-H...Cl hydrogen bonding. The N-H group participates in a bifurcated interaction with the two symmetry related Cl- anions. The hydroxyl groups of the diethanolamine ligand form very strong hydrogen bonds between the complex units, thus leading to infinite zigzag (O-H...O-H...O-H..) chains in the crystal packing. The complex units are further connected by weaker intermolecular hydrogen bonds of the N-H...Cl type in a way to form layers parallel to the crystallographic (001) plane. The reaction between the trans-[PdCl2(DEA)2] or trans-[Pd(H2O)2(DEA)2]2+ complex and MeCOHis-Gly dipeptide at 1.5 < pH < 2.0 and at 25 degrees C leads to the regioselective cleavage of the amide bond involving the carboxylic group of the histidine. The cleavage of the substrate was fast and went almost to completion within less than one hour.
Collapse
Affiliation(s)
- Zorica D Petrović
- Department of Chemistry, Faculty of Science, University of Kragujevac, R. Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia.
| | | | | | | | | |
Collapse
|
24
|
Zuccaccia C, Bellachioma G, Cardaci G, Macchioni A, Binotti B, Carfagna C. Synthesis, Interionic Structure, and Reactivity toward CO andp-Methylstyrene of Palladacyclic Compounds Bearingα-Diimine Ligands. Helv Chim Acta 2006. [DOI: 10.1002/hlca.200690155] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
25
|
Synthesis, characterization and solid state structures of thiosemicarbazone palladacycles: Influence of hydrogen bonding in the molecular arrangement. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.02.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
26
|
Ghedini M, Aiello I, Crispini A, Golemme A, La Deda M, Pucci D. Azobenzenes and heteroaromatic nitrogen cyclopalladated complexes for advanced applications. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2005.12.011] [Citation(s) in RCA: 146] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
27
|
Crespo M, Font-Bardía M, Solans X. Synthesis, reactivity and crystal structures of platinum (II) and platinum (IV) cyclometallated compounds derived from 2- and 4-biphenylimines. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.09.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
28
|
|
29
|
Calmuschi-Cula B, Kalf I, Wang R, Englert U. The First trans-Configured Cyclopalladated Amine. Organometallics 2005. [DOI: 10.1021/om050524d] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Beatrice Calmuschi-Cula
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Irmgard Kalf
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Ruimin Wang
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Ulli Englert
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| |
Collapse
|
30
|
Adrio LA, Amoedo A, Antelo JM, Fernández JJ, Martínez J, Ortigueira JM, Pereira MT, Vila JM. Novel Cyclometallated Complexes Derived From a Halogenated Thiosemicarbazone. Crystal and Molecular Structures of 2-FC6H4C(Me)=NN(H)C(=S)NHPh and [(Pd{2-FC6H3C(Me)=NN=C(S)NHPh})2(μ-PPh2(CH2)2PPh2)]. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200570044] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
31
|
Tanaka D, Romeril SP, Myers AG. On the Mechanism of the Palladium(II)-Catalyzed Decarboxylative Olefination of Arene Carboxylic Acids. Crystallographic Characterization of Non-Phosphine Palladium(II) Intermediates and Observation of Their Stepwise Transformation in Heck-like Processes. J Am Chem Soc 2005; 127:10323-33. [PMID: 16028944 DOI: 10.1021/ja052099l] [Citation(s) in RCA: 388] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mechanistic studies of a palladium-mediated decarboxylative olefination of arene carboxylic acids are presented, providing spectroscopic and, in two instances, crystallographic evidence for intermediates in a proposed stepwise process. Sequentially, the proposed pathway involves carboxyl exchange between palladium(II) bis(trifluoroacetate) and an arene carboxylic acid substrate, rate-determining decarboxylation to form an arylpalladium(II) trifluoroacetate intermediate (containing two trans-disposed S-bound dimethyl sulfoxide ligands in a crystallographically characterized form), then olefin insertion and beta-hydride elimination. Because of the unique mode of generation of the arylpalladium(II) trifluoroacetate intermediate, a species believed to be substantially electron-deficient relative to phosphine-containing arylpalladium(II) complexes previously studied, it has been possible to gain new insights into those steps that are common to the Heck reaction, namely, olefin insertion and beta-hydride elimination. The present results show that there are notable differences in reactivity between arylpalladium(II) intermediates generated by decarboxylative palladation and those produced in conventional Heck reactions. Specifically, we have found that more electron-rich alkenes react preferentially with an arylpalladium(II) trifluoroacetate intermediate formed by decarboxylative palladation, whereas an opposite trend is found in conventional Heck reactions. In addition, we have found that the aralkylpalladium(II) trifluoroacetate intermediates that are formed upon olefin insertion in the present study are stabilized with respect to beta-hydride elimination as compared to the corresponding phosphine-ligated aralkylpalladium(II) complexes. We have also crystallographically characterized an aralkylpalladium(II) trifluoroacetate intermediate derived from arylpalladium(II) insertion into norbornene, and this structure, too, contains an S-bound dimethyl sulfoxide ligand; the ipso-carbon of the transferred aryl group and trifluoroacetate function as the third and fourth ligands in the observed distorted square-planar palladium(II) complex.
Collapse
Affiliation(s)
- Daisuke Tanaka
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
| | | | | |
Collapse
|
32
|
|
33
|
Albert J, Cadena JM, Granell J, Solans X, Font-Bardia M. Regioselective cyclomanganation of Schiff bases. An unexpected effect of chloro substituents. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.07.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
34
|
|
35
|
Schultz T, Schmees N, Pfaltz A. Palladium(II) complexes with P,N- and C,N-ligands as catalysts for the Heck reaction. Appl Organomet Chem 2004. [DOI: 10.1002/aoc.745] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
36
|
|
37
|
Martínez J, Pereira MT, Buceta I, Alberdi G, Amoedo A, Fernández JJ, López-Torres M, Vila JM. Palladium(II) Cyclometalated Thiosemicarbazone Compounds: A New Class of Bidentate P,S Metallo Ligands. Organometallics 2003. [DOI: 10.1021/om034154+] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
38
|
Vicente J, Abad JA, Clemente R, López-Serrano J, Ramírez de Arellano MC, Jones PG, Bautista D. Mercurated and Palladated Iminophosphoranes. Synthesis and Reactivity. Organometallics 2003. [DOI: 10.1021/om0303552] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José Vicente
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, E-30071 Murcia, Spain
| | - José-Antonio Abad
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, E-30071 Murcia, Spain
| | - Rafael Clemente
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, E-30071 Murcia, Spain
| | - Joaquín López-Serrano
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, E-30071 Murcia, Spain
| | | | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie der Technischen Universität, Postfach 3329, 38023 Braunschweig, Germany
| | - Delia Bautista
- SACE, Universidad de Murcia, Apartado 4021, E-30071 Murcia, Spain
| |
Collapse
|
39
|
Albert J, Magali Cadena J, González A, Granell J, Solans X, Font-Bardia M. Cyclopalladation of Schiff bases from phenylalanine and 2-phenylglicine. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01928-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
40
|
Amoedo A, Graña M, Martínez J, Pereira T, López-Torres M, Fernández A, Fernández J, Vila J. A Comparative Study of Cyclometallated Palladium(II) Compounds with Terdentate [C,N,S] Pincer Ligands − Crystal and Molecular Structure of [Pd{4-MeC6H3C(Me)=NNC(=S)NHMe}(PPh3)] and [Pd{4-MeOC6H3C(H)=N[2-(SMe)C6H4]}(Cl)]. Eur J Inorg Chem 2002. [DOI: 10.1002/1099-0682(200203)2002:3<613::aid-ejic613>3.0.co;2-a] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
41
|
|
42
|
Formation and cleavage of platinacycles containing a fluorinated imine. Crystal structure of [PtMe(3,4,5-C6HF3CHNCH2C6H5)PPh3]. Polyhedron 2002. [DOI: 10.1016/s0277-5387(01)00971-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
43
|
Slater JW, Lydon DP, Alcock NW, Rourke JP. Doubly Cyclometalated Pyridazines: Contrasting Behavior with Palladium and Platinum. Organometallics 2001. [DOI: 10.1021/om010449g] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Donocadh P. Lydon
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | | | | |
Collapse
|
44
|
Fernández-Rivas C, Cárdenas DJ, Martín-Matute B, Monge Á, Gutiérrez-Puebla E, Echavarren AM. Synthesis and Structure of New Oxapalladacycles with a Pd−O Bond. Organometallics 2001. [DOI: 10.1021/om0010565] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Carolina Fernández-Rivas
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, and Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Diego J. Cárdenas
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, and Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Belén Martín-Matute
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, and Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Ángeles Monge
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, and Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Enrique Gutiérrez-Puebla
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, and Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| | - Antonio M. Echavarren
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, and Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
| |
Collapse
|
45
|
Vicente J, Arcas A, Fernández-Hernández JM, Bautista D. [Pd{CH2C(O)Me}Cl]n, a Key Product for the Synthesis of Acetonylpalladium(II) Complexes. Organometallics 2001. [DOI: 10.1021/om0101036] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José Vicente
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, Murcia, 30071 Spain, and S.A.C.E. Universidad de Murcia, Apartado 4021, Murcia, 30071 Spain
| | - Aurelia Arcas
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, Murcia, 30071 Spain, and S.A.C.E. Universidad de Murcia, Apartado 4021, Murcia, 30071 Spain
| | - Jesús M. Fernández-Hernández
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, Murcia, 30071 Spain, and S.A.C.E. Universidad de Murcia, Apartado 4021, Murcia, 30071 Spain
| | - Delia Bautista
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Apartado 4021, Murcia, 30071 Spain, and S.A.C.E. Universidad de Murcia, Apartado 4021, Murcia, 30071 Spain
| |
Collapse
|
46
|
Optically active palladacycles containing imines derived from 1-(1-naphthyl)ethylamine: new resolving agents for P-chiral phosphines. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0957-4166(00)00143-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
47
|
Complexes cis-[PdCl2(OSMeR)2] (R=Me, Ph, and C6H4Me-4) in attempted asymmetric cyclometalation of dimethylaminomethylferrocene. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(00)00021-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
48
|
Albert J, Bosque R, Granell J, Tavera R. Cyclometallation of anthracen-9-ylmethylene-phenyl-amine by palladium(II) compounds. J Organomet Chem 2000. [DOI: 10.1016/s0022-328x(99)00567-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
49
|
Zhao G, Yang QC, Mak TCW. Cyclic Ether Induced Asymmetric Cyclopalladation: Synthesis and Structural Characterization of Enantiopure Bis(μ-acetato)-Bridged Dimers of Planar Chiral Cyclopalladated Ferrocenylimines and Their Derivatives. Organometallics 1999. [DOI: 10.1021/om9903487] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gang Zhao
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, SAR, People's Republic of China
| | - Qing-Chuan Yang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, SAR, People's Republic of China
| | - Thomas C. W. Mak
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, SAR, People's Republic of China
| |
Collapse
|
50
|
Falvello LR, Fernández S, Navarro R, Rueda A, Urriolabeitia EP. Synthesis and Structure of Pd(II) Complexes Containing the C,C-Chelating Bis-Ylide Ligand [Ph(3)P=C(H)](2)CO. X-ray Crystal Structure of {Pd(&mgr;-Cl){[C(H)PPh(3)](2)CO}}(2)(ClO(4))(2).CH(2)Cl(2). Inorg Chem 1998; 37:6007-6013. [PMID: 11670734 DOI: 10.1021/ic980392z] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of Pd(OAc)(2) with the bis(phosphonium) salt [Ph(3)PCH(2)COCH(2)PPh(3)]Cl(2) (1:1 molar ratio) results in the formation of the cis-dichlorobis(ylide) derivative Cl(2)Pd{[C(H)PPh(3)](2)CO}, 1, in which the bis(ylide) ligand [C(H)PPh(3)](2)CO acts as a chelating group through the two ylide carbon atoms. Complex 1 reacts with TlClO(4) (1:1 molar ratio) to give [Pd(&mgr;-Cl){[C(H)PPh(3)](2)CO}](2)(ClO(4))(2), 2, which reacts with two further equivalents of TlClO(4) in NCMe to give [Pd{[C(H)PPh(3)](2)CO}(NCMe)(2)](ClO(4))(2) 3. The reactivity of 2 and 3 has been explored. Compound 2 reacts with pyridine, 3,5-lutidine, or Ph(3)P=C(H)CN (1:2 molar ratio), resulting in the rupture of the chlorine bridging system and formation of [PdCl{[C(H)PPh(3)](2)CO}(L)](ClO(4)) (L = py (4), 3,5-lu (5), NC-C(H)=PPh(3) (6)), and with Tlacac (1:2 molar ratio) with formation of the acetylacetonate [Pd(acac){[C(H)PPh(3)](2)CO}](ClO(4)), 7. On the other hand, complex 3 reacts with the ylide Ph(3)P=C(H)CN (1:2 molar ratio) giving [Pd{[C(H)PPh(3)](2)CO}[NC-C(H)=PPh(3)](2)](ClO(4))(2), 8, which contains two N-coordinated ylides, and with NBu(4)OH (1:1) to give [Pd(&mgr;-OH){[C(H)PPh(3)](2)CO}](2)(ClO(4))(2), 9. The reaction of Pd(OAc)(2) with the ylide phosphonium salt [Ph(3)P=C(H)COCH(2)PPh(3)](ClO(4)) (1:1) gives the acetate dimer [Pd(&mgr;-OOCCH(3)){[C(H)PPh(3)](2)CO}](2)(ClO(4))(2), 10. The structures of complexes 1-10 were deduced from their spectroscopic data and from the resolution of the molecular structure of complex 2.CH(2)Cl(2).
Collapse
Affiliation(s)
- Larry R. Falvello
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza- Consejo Superior de Investigaciones Científicas, 50009 Zaragoza, Spain
| | | | | | | | | |
Collapse
|