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Fedorowicz D, Ślepokura K, Kłak J, Witwicki M, Gregoliński J. Hexa- and octanuclear copper(II) complexes with a tetraeicosaaza amine macrocycle. Dalton Trans 2023; 52:16123-16127. [PMID: 37929621 DOI: 10.1039/d3dt02993j] [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: 11/07/2023]
Abstract
One hexa- and two octanuclear Cu(II) complexes were synthesised from different metal salts and a very large (8 + 8) tetraeicosaaza macrocycle. These nitrate, chloride and sulphate coordination compounds were characterised by taking elemental analysis, spectroscopy, crystallography and magnetic susceptibility measurements. Their crystal structures revealed different interesting coordination modes of Cu(II) cations and nuclearity in these centrosymmetric complexes. For the sulphate complex two different, homo- vs. heterochiral, arrangements of the same macrocycle L3 around the same Cu(II) cations take place.
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Affiliation(s)
- Dominika Fedorowicz
- Faculty of Chemistry, Wroclaw University, F. Joliot-Curie 14, 50-283 Wroclaw, Poland.
| | - Katarzyna Ślepokura
- Faculty of Chemistry, Wroclaw University, F. Joliot-Curie 14, 50-283 Wroclaw, Poland.
| | - Julia Kłak
- Faculty of Chemistry, Wroclaw University, F. Joliot-Curie 14, 50-283 Wroclaw, Poland.
| | - Maciaj Witwicki
- Faculty of Chemistry, Wroclaw University, F. Joliot-Curie 14, 50-283 Wroclaw, Poland.
| | - Janusz Gregoliński
- Faculty of Chemistry, Wroclaw University, F. Joliot-Curie 14, 50-283 Wroclaw, Poland.
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Gregoliński J, Ślepokura K, Kłak J, Witwicki M. Multinuclear Ni(II) and Cu(II) complexes of a meso 6 + 6 macrocyclic amine derived from trans-1,2-diaminocyclopentane and 2,6-diformylpyridine. Dalton Trans 2022; 51:9735-9747. [PMID: 35703400 DOI: 10.1039/d2dt01329k] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four hexanuclear chloride and sulphate Ni(II) and Cu(II) complexes 1, 2, 4 and 5 and one tetranuclear nitrate Cu(II) complex 3 have been synthesised from appropriate metal salts and 6 + 6 octadecaaza macrocyclic ligands. All obtained coordination compounds have been characterised by elemental analysis, spectroscopic methods (ESI MS, NMR and EPR), magnetic susceptibility measurements and X-ray crystallography. Their X-ray crystal structures reveal different coordination modes of metal cations involved in the obtained centro-symmetrical coordination compounds. The conformational folding of the macrocyclic ligand adopted in the respective complexes depends on the number of metal cations bound within the macrocycle but not on their type. The cavities of these multinuclear complexes might be occupied by solvent molecules and counter anions bound by hydrogen bonds or might be empty in the case where the macrocyclic ring of the ligand is squeezed in the middle. All obtained Ni(II) and Cu(II) coordination compounds are paramagnetic. This has been proved by their 1H NMR and EPR spectra and magnetic measurements. Direct current (DC) variable-temperature magnetic susceptibility measurements on the polycrystalline samples of 1-5 were carried out in the temperature range of 1.8-300 K. The magnetic behaviour of 1 and 2 is dominated by the magnetic anisotropy of the nickel(II) ion masking the magnetic interactions between magnetic centres. The magnetic data of 3-5 reveal small antiferromagnetic interactions within the Cu4 and Cu6 units. EPR experiments for 3-5 show, at 9.6 and 34 GHz frequencies, that the predominant contribution to the orbitals occupied by the unpaired electrons in the ground state originates from dx2-y2.
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Affiliation(s)
- Janusz Gregoliński
- Faculty of Chemistry University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland.
| | - Katarzyna Ślepokura
- Faculty of Chemistry University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland.
| | - Julia Kłak
- Faculty of Chemistry University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland.
| | - Maciej Witwicki
- Faculty of Chemistry University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland.
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Haiduc I. Inverse coordination complexes with oxoanions as centroligands. A review of topologies. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120999] [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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Bhunia P, Mayans J, Escuer A, Ghosh A. An Unprecedented Dodecanuclear Copper(II) Complex Derived from an Unsymmetrical Schiff‐Base Ligand. ChemistrySelect 2022. [DOI: 10.1002/slct.202200321] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pradip Bhunia
- Department of Chemistry University College of Science University of Calcutta, 92 A.P.C. Road Kolkata 700009 India
| | - Júlia Mayans
- Departament de Química Inorgànica I Orgànica Secció Inorgànica and Institut de Nanosciència and Nanotecnologia (IN2UB) Martíi Franqués 1–11 08028 Barcelona Spain
| | - Albert Escuer
- Departament de Química Inorgànica I Orgànica Secció Inorgànica and Institut de Nanosciència and Nanotecnologia (IN2UB) Martíi Franqués 1–11 08028 Barcelona Spain
| | - Ashutosh Ghosh
- Department of Chemistry University College of Science University of Calcutta, 92 A.P.C. Road Kolkata 700009 India
- Rani Rashmoni Green University Tarakeswar 712410 West Bengal India
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Yao Y, Xing F, Zhu S. Anthraquinone functionalized pseudocalixarene for high lithium loading and chromogenic ion-pair recognition in DMSO. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120475] [Citation(s) in RCA: 1] [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: 11/24/2022]
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Tandon SS, Patel N, Bunge SD, Wang EC, Thompson R, Thompson LK. One-Pot Self-Assembly of Dinuclear, Tetranuclear, and H-Bonding-Directed Polynuclear Cobalt(II), Cobalt(III), and Mixed-Valence Co(II)/Co(III) Complexes of Schiff Base Ligands with Incomplete Double Cubane Core. Materials (Basel) 2020; 13:E5425. [PMID: 33260611 DOI: 10.3390/ma13235425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 11/16/2022]
Abstract
The reaction of 2,6-diformyl-4-methylphenol (DFMF) with 1-amino-2-propanol (AP) and tris(hydroxymethyl)aminomethane (THMAM) was investigated in the presence of Cobalt(II) salts, (X = ClO4−, CH3CO2−, Cl−, NO3−), sodium azide (NaN3), and triethylamine (TEA). In one pot, the variation in Cobalt(II) salt results in the self-assembly of dinuclear, tetranuclear, and H-bonding-directed polynuclear coordination complexes of Cobalt(III), Cobalt(II), and mixed-valence CoIICoIII: [Co2III(H2L−1)2(AP−1)(N3)](ClO4)2 (1), [Co4(H2L−1)2(µ3-1,1,1-N3)2(µ-1,1-N3)2Cl2(CH3OH)2]·4CH3OH (2), [Co2IICo2III(HL−2)2(µ-CH3CO2)2(µ3-OH)2](NO3)2·2CH3CH2OH (3), and [Co2IICo2III (H2L12−)2(THMAM−1)2](NO3)4 (4). In 1, two cobalt(III) ions are connected via three single atom bridges; two from deprotonated ethanolic oxygen atoms in the side arms of the ligands and one from the1-amino-2-propanol moiety forming a dinuclear unit with a very short (2.5430(11) Å) Co-Co intermetallic separation with a coordination number of 7, a rare feature for cobalt(III). In 2, two cobalt(II) ions in a dinuclear unit are bridged through phenoxide O and μ3-1,1,1-N3 azido bridges, and the two dinuclear units are interconnected by two μ-1,1-N3 and two μ3-1,1,1-N3 azido bridges generating tetranuclear cationic [Co4(H2L−1)2(µ3-1,1,1-N3)2(µ-1,1-N3)2Cl2(CH3OH)2]2+ units with an incomplete double cubane core, which grow into polynuclear 1D-single chains along the a-axis through H-bonding. In 3, HL2− holds mixed-valent Co(II)/Co(III) ions in a dinuclear unit bridged via phenoxide O, μ-1,3-CH3CO2−, and μ3-OH− bridges, and the dinuclear units are interconnected through two deprotonated ethanolic O in the side arms of the ligands and two μ3-OH− bridges generating cationic tetranuclear [Co2IICo2III(HL−2)2(µ-CH3CO2)2(µ3-OH)2]2+ units with an incomplete double cubane core. In 4, H2L1−2 holds mixed-valent Co(II)/Co(III) ions in dinuclear units which dimerize through two ethanolic O (μ-RO−) in the side arms of the ligands and two ethanolic O (μ3-RO−) of THMAM bridges producing centrosymmetric cationic tetranuclear [Co2IICo2III (H2L1−2)2(THMAM−1)2]4+ units which grow into 2D-sheets along the bc-axis through a network of H-bonding. Bulk magnetization measurements on 2 demonstrate that the magnetic interactions are completely dominated by an overall ferromagnetic coupling occurring between Co(II) ions.
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Tandon SS, Bunge SD, Patel N, Wang EC, Thompson LK. Self-Assembly of Antiferromagnetically-Coupled Copper(II) Supramolecular Architectures with Diverse Structural Complexities. Molecules 2020; 25:molecules25235549. [PMID: 33256163 PMCID: PMC7734591 DOI: 10.3390/molecules25235549] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 11/16/2022] Open
Abstract
The self-assembly of 2,6-diformyl-4-methylphenol (DFMP) and 1-amino-2-propanol (AP)/2-amino-1,3-propanediol (APD) in the presence of copper(II) ions results in the formation of six new supramolecular architectures containing two versatile double Schiff base ligands (H3L and H5L1) with one-, two-, or three-dimensional structures involving diverse nuclearities: tetranuclear [Cu4(HL2−)2(N3)4]·4CH3OH·56H2O (1) and [Cu4(L3−)2(OH)2(H2O)2] (2), dinuclear [Cu2(H3L12−)(N3)(H2O)(NO3)] (3), polynuclear {[Cu2(H3L12−)(H2O)(BF4)(N3)]·H2O}n (4), heptanuclear [Cu7(H3L12−)2(O)2(C6H5CO2)6]·6CH3OH·44H2O (5), and decanuclear [Cu10(H3L12−)4(O)2(OH)2(C6H5CO2)4] (C6H5CO2)2·20H2O (6). X-ray studies have revealed that the basic building block in 1, 3, and 4 is comprised of two copper centers bridged through one μ-phenolate oxygen atom from HL2− or H3L12−, and one μ-1,1-azido (N3−) ion and in 2, 5, and 6 by μ-phenoxide oxygen of L3− or H3L12− and μ-O2− or μ3-O2− ions. H-bonding involving coordinated/uncoordinated hydroxy groups of the ligands generates fascinating supramolecular architectures with 1D-single chains (1 and 6), 2D-sheets (3), and 3D-structures (4). In 5, benzoate ions display four different coordination modes, which, in our opinion, is unprecedented and constitutes a new discovery. In 1, 3, and 5, Cu(II) ions in [Cu2] units are antiferromagnetically coupled, with J ranging from −177 to −278 cm−1.
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Affiliation(s)
- Santokh S. Tandon
- Department of Chemistry and Biochemistry, Kent State University-Salem Campus, Salem, OH 44460, USA
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA; (S.D.B.); (N.P.); (E.C.W.)
- Correspondence: ; Tel.: +1-330-337-4235
| | - Scott D. Bunge
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA; (S.D.B.); (N.P.); (E.C.W.)
| | - Neil Patel
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA; (S.D.B.); (N.P.); (E.C.W.)
| | - Esther C. Wang
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA; (S.D.B.); (N.P.); (E.C.W.)
| | - Laurence K. Thompson
- Department of Chemistry, Memorial University, St. John’s Newfoundland, NL A1B 3X7, Canada;
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Woodhouse SS, De Silva DNT, Jameson GB, Cutler DJ, Sanz S, Brechin EK, Davies CG, Jameson GNL, Plieger PG. New salicylaldoximato-borate ligands resulting from anion hydrolysis and their respective copper and iron complexes. Dalton Trans 2019; 48:11872-11881. [PMID: 31309211 DOI: 10.1039/c9dt01968e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Anion hydrolysis reactions between salicylaldoximato ligands (L'-L''') and copper and iron BF4- metal salts, have resulted in the formation of new salicylaldoximato borate containing transition metal complexes: [Fe2(L' + 2H)2](BF4)2(MeOH)4 (C1), [Fe3(L'' + 4H)(OH)2(Py)2](BF4)2(H2O)2(Py)2 (C2), and [Cu2(L''' + H)2Cl2] (C3). Each of the complexes have been structurally characterised, revealing the indirect role boron plays in the formation of these complexes. For complexes C1 and C2, Mössbauer spectroscopy confirmed the existence of Fe(iii) oxidation states. SQUID magnetometry measurements were performed on complexes C2 and C3, revealing the presence of two competing exchange pathways between the three Fe(iii) centres in C2, with antiferromagnetic exchange dominating. For C3 weak antiferromagnetic exchange dominated between the two Cu(ii) centres.
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Affiliation(s)
- Sidney S Woodhouse
- School of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
| | - D Nirosha T De Silva
- School of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
| | - Geoffrey B Jameson
- School of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
| | - Daniel J Cutler
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Sergio Sanz
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Casey G Davies
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Guy N L Jameson
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Paul G Plieger
- School of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
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Abstract
A large macrocyclic ligand containing six pyridine fragments and six diaminocyclopentane fragments is able to form hexanuclear Zn(II) and Ni(II) complexes as well as a trinuclear Zn(II) complex. X-ray crystal structures of these complexes indicate quite different ligand conformations. In the hexanuclear Zn(II) derivative with chloride counteranions metal ions have a distorted-trigonal-bipyramidal geometry and occupy loop sections formed by the highly folded macrocycle, which adopts a globular shape. In the hexanuclear Ni(II) derivative with nitrate counteranions metal ions exhibit a distorted-octahedral geometry and the ligand conformation is much more open, while in the trinuclear Zn(II) complex the macrocycle wraps around the octahedral metal ions. The last highly entangled conformation of the trinuclear complex is also present in solution, as confirmed by the NOESY spectra. The NMR data indicate that the hexanuclear Zn(II) complex partially dissociates in water solutions to form the trinuclear complex, while the 1H NMR titration of the free macrocycle with zinc(II) chloride indicates that the formation of a trinuclear complex corresponds to cooperative binding of metal ions.
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Affiliation(s)
- Janusz Gregoliński
- Department of Chemistry, University of Wrocław , 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Katarzyna Ślepokura
- Department of Chemistry, University of Wrocław , 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Jerzy Lisowski
- Department of Chemistry, University of Wrocław , 14 F. Joliot-Curie, 50-383 Wrocław, Poland
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Pankov IV, Shcherbakov IN, Tkachev VV, Levchenkov SI, Popov LD, Lukov VV, Aldoshin SM, Kogan VA. The magnetic exchange interaction in bi- and tetranuclear copper(II) complexes with the bis -azomethine of 1,3-diaminopropanol-2 and 4-hydroxy-3-formylcoumarin with an azide exogenous bridge. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.07.014] [Citation(s) in RCA: 4] [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: 12/01/2022]
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Xu MY, Wang YT, Ni QL, Zhang ZH, Wang XJ, Liang GM, Gui LC. Aggregation of the metallocycles {Cu8} and {Cu20} using [Cu(bp)] units (H2bp = bis(2-hydroxybenzyl)amine): structures and magnetic properties. Dalton Trans 2016; 45:4993-7. [PMID: 26936460 DOI: 10.1039/c6dt00174b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Two metallocycles, {Cu8(bp)4(OH)4(H2O)4(ClO4)4} (1) and {Cu20(bp)20} (2), were afforded by the reactions of the semi-flexible tridentate ligand bis(2-hydroxybenzyl)amine (H2bp) with Cu(ClO4)2·6H2O and Cu(OAc)2·H2O. Complex 1 has a saddle-shaped cyclic structure and complex 2 has a nanosized wheel-shaped structure. The two compounds consist of [Cu(bp)] units.
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Affiliation(s)
- Mei-Yu Xu
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Ya-Ting Wang
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Qing-Ling Ni
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Zi-Hao Zhang
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Xiu-Jian Wang
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China. and Beijing Synchrotron Radiation Facility (BSRF), Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, P.R. China
| | - Guang-Ming Liang
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Liu-Cheng Gui
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
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