1
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Duplaix-Rata G, Le Guennic B, David G. Revisiting magnetic exchange couplings in heterodinuclear complexes through the decomposition method in KS-DFT. Phys Chem Chem Phys 2023; 25:14170-14178. [PMID: 37162514 DOI: 10.1039/d3cp00697b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Providing tools to understand the physical mechanisms governing magnetic properties in transition metal-based compounds is still of great interest. Here, the magnetic exchange coupling in a series of heterodinuclear complexes is investigated by means of the decomposition method. This work presents the first application of the decomposition method to systems where magnetic centres may bear more than one unpaired electron. By decomposing the coupling into three physical contributions (direct exchange, kinetic exchange, and spin polarisation), we provide numerical arguments to confirm or infirm the rationalisation allowed by the conceptual analysis of the magnetic d orbitals. We also take advantage of the recently proposed generalisation of the method [David et al., J. Chem. Theory Comput., 2023, 19, 157] to get more insights into the underlying mechanisms by disentangling the coupling between centres into its electron-electron interactions.
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Affiliation(s)
- Gwenhaël Duplaix-Rata
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France.
| | - Boris Le Guennic
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France.
| | - Grégoire David
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France.
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2
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Woodhouse SS, Dais TN, Etcheverry-Berríos A, Brechin EK, Lane JR, Plieger PG. Against the Norm: Non Irving–Williams Transmetalation in Transition Metal Dimers. Inorg Chem 2022; 61:17819-17827. [DOI: 10.1021/acs.inorgchem.2c03113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sidney S. Woodhouse
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
| | - Tyson N. Dais
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
| | - Alvaro Etcheverry-Berríos
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EdinburghEH93FJ, Scotland, U.K
| | - Euan K. Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, EdinburghEH93FJ, Scotland, U.K
| | - Joseph R. Lane
- Department of Chemistry, School of Science, University of Waikato, Private Bag, Hamilton3105, New Zealand
| | - Paul G. Plieger
- School of Natural Sciences, Massey University, Private Bag 11 222, Palmerston North4410, New Zealand
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3
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Kusumoto S, Umeno H, Kim Y, Sekine Y, Nakamura M, Hayami S. Structural and Magnetic Characterization of Homo- and Heterometallic Trinuclear Ni(II) and Cu(II) Clusters with N2O6 Acyclic Polydentate Ligand. CHEM LETT 2021. [DOI: 10.1246/cl.210501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sotaro Kusumoto
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686, Japan
| | - Harue Umeno
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yang Kim
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Yoshihiro Sekine
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Priority Organization for Innovation and Excellence, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Masaaki Nakamura
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
- Institute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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4
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Kumar A, Comadoll CG, King DS, Oliver AG, Day VW, Blakemore JD. Incorporation of [Cp*Rh] and [Cp*Ir] Species into Heterobimetallic Complexes via Protonolysis Reactivity and Dioximato Chelation. Inorg Chem 2021; 60:14047-14059. [PMID: 34455788 DOI: 10.1021/acs.inorgchem.1c01362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of multimetallic compounds can enable the placement of two or more metals in close proximity, but efforts in this area are often hindered by reagent incompatibilities and a lack of selectivity. Here, we show that organometallic half-sandwich [Cp*M] (M = Rh, Ir) fragments (where Cp* is η5-pentamethylcyclopentadienyl) can be cleanly installed into metallomacrocyclic structures based on the workhorse diimine-monooxime-monooximato ligand system. Six new heterobimetallic compounds have been prepared to explore this synthetic chemistry, which relies on in situ protonolysis reactivity with precursor Ni(II) or Co(III) monometallic complexes in the presence of suitable [Cp*M] species. Solid-state X-ray diffraction studies confirm installation of the [Cp*M] fragments into the metallomacrocycles via effective chelation of the Rh(III) and Ir(III) centers by the nascent dioximato site. Contrasting with square-planar Ni(II) centers, the Co(III) centers prefer octahedral geometry in the heterobimetallic compounds, promoting bridging ligation of acetate across the two metals. Spectroscopic and electrochemical studies reveal subtle influences of the metals on each other's properties, consistent with the moderate M'···M distances of ca. 3.6-3.7 Å in the modular compounds. Taken together, our results show that heterobimetallic complexes can be assembled with organometallic [Cp*M] fragments on the diimine-dioximato platform.
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Affiliation(s)
- Amit Kumar
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - Chelsea G Comadoll
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - Daniel S King
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - Allen G Oliver
- Department of Chemistry and Biochemistry, University of Notre Dame, 149 Stepan Chemistry, Notre Dame, Indiana 46556, United States
| | - Victor W Day
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - James D Blakemore
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
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5
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El Harakeh N, Morais ACP, Rani N, Gomez JAG, Cousino A, Lanznaster M, Mazumder S, Verani CN. Reactivity and Mechanisms of Photoactivated Heterometallic [Ru
II
Ni
II
] and [Ru
II
Ni
II
Ru
II
] Catalysts for Dihydrogen Generation from Water. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nour El Harakeh
- Department of Chemistry Wayne State University Detroit MI 48202 USA
| | - Ana C. P. Morais
- Instituto de Química Universidade Federal Fluminense 24020-141 Niterói RJ Brazil
| | - Neha Rani
- Department of Chemistry Indian Institute of Technology Jammu Jammu 181221 India
| | - Javier A. G. Gomez
- Instituto de Química Universidade Federal Fluminense 24020-141 Niterói RJ Brazil
| | - Abigail Cousino
- Department of Chemistry Wayne State University Detroit MI 48202 USA
| | - Mauricio Lanznaster
- Instituto de Química Universidade Federal Fluminense 24020-141 Niterói RJ Brazil
| | - Shivnath Mazumder
- Department of Chemistry Indian Institute of Technology Jammu Jammu 181221 India
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6
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El Harakeh N, de Morais ACP, Rani N, Gomez JAG, Cousino A, Lanznaster M, Mazumder S, Verani CN. Reactivity and Mechanisms of Photoactivated Heterometallic [Ru II Ni II ] and [Ru II Ni II Ru II ] Catalysts for Dihydrogen Generation from Water. Angew Chem Int Ed Engl 2021; 60:5723-5728. [PMID: 33319451 DOI: 10.1002/anie.202013678] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Indexed: 11/07/2022]
Abstract
Two heterometallic photocatalysts were designed and probed for water reduction. Both [(bpy)2 RuII NiII (L1 )](ClO4 )2 (1) and [(bpy)2 RuII NiII (L2 )2 RuII (bpy)2 ](ClO4 )2 (2) can generate the low-valent precursor involved in hydride formation prior to dihydrogen generation. However, while the bimetallic [RuII NiII ] (1) requires the presence of an external photosensitizer to trigger catalytic activity, the trimetallic [RuII NiII RuII ] (2) displays significant coupling between the catalytic and light-harvesting units to promote intramolecular multielectron transfer and perform photocatalysis at the Ni center. A concerted experimental and theoretical effort proposes mechanisms to explain why 1 is unable to achieve self-supported catalysis, while 2 is fully photocatalytic.
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Affiliation(s)
- Nour El Harakeh
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Ana C P de Morais
- Instituto de Química, Universidade Federal Fluminense, 24020-141, Niterói, RJ, Brazil
| | - Neha Rani
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu, 181221, India
| | - Javier A G Gomez
- Instituto de Química, Universidade Federal Fluminense, 24020-141, Niterói, RJ, Brazil
| | - Abigail Cousino
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Mauricio Lanznaster
- Instituto de Química, Universidade Federal Fluminense, 24020-141, Niterói, RJ, Brazil
| | - Shivnath Mazumder
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu, 181221, India
| | - Cláudio N Verani
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
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7
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Lewis AJ, Garlatti E, Cugini F, Solzi M, Zeller M, Carretta S, Zaleski CM. Slow Magnetic Relaxation of a 12-Metallacrown-4 Complex with a Manganese(III)–Copper(II) Heterometallic Ring Motif. Inorg Chem 2020; 59:11894-11900. [DOI: 10.1021/acs.inorgchem.0c01410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alex J. Lewis
- Department of Chemistry and Biochemistry, Shippensburg University, Shippensburg, Pennsylvania 17257, United States
| | - Elena Garlatti
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, 1-43124 Parma, Italy
- Udr Parma, INSTM, 1-43124 Parma, Italy
| | - Francesco Cugini
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, 1-43124 Parma, Italy
| | - Massimo Solzi
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, 1-43124 Parma, Italy
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Stefano Carretta
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, 1-43124 Parma, Italy
- Udr Parma, INSTM, 1-43124 Parma, Italy
| | - Curtis M. Zaleski
- Department of Chemistry and Biochemistry, Shippensburg University, Shippensburg, Pennsylvania 17257, United States
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8
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Dutta T, Mirdya S, Giri P, Chattopadhyay S. Synthesis and characterization of a double oximato bridged dimeric copper(II) complex and its use in oxidative dimerisation of o-aminophenol. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114164] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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9
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Synthesis, characterization, structure and properties of heterobimetallic complexes [CuNi(μ-OAc) (μ-OH) (μ-OH 2 ) (bpy) 2 ] (BF 4 ) 2 and [CuNi(bz) 3 (bpy) 2 ] ClO 4 from 2,2′ bipyridine. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Hari N, Mandal S, Jana A, Sparkes HA, Mohanta S. Syntheses, crystal structures, magnetic properties and ESI-MS studies of a series of trinuclear CuIIMIICuII compounds (M = Cu, Ni, Co, Fe, Mn, Zn). RSC Adv 2018; 8:7315-7329. [PMID: 35539115 PMCID: PMC9078389 DOI: 10.1039/c7ra13763j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 02/05/2018] [Indexed: 11/21/2022] Open
Abstract
Six homo/heterotrinuclear CuIIMIICuII (M = Mn–Zn) compounds derived from salicylaldehyde-trans-1,2-diaminocyclohexane, which is a rarely utilized ligand, are reported.
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Affiliation(s)
- Nairita Hari
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Shuvankar Mandal
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
| | - Arpita Jana
- Department of Chemistry
- University of Calcutta
- Kolkata 700 009
- India
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11
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Lal RA, Kumar A, Syiemlieh I, Kurbah SD. Synthesis, characterization, and catalytic activity of a water soluble copper(II) and nickel(II) heterobimetallic complex [CuNi(μ-OH)(μ-OH2)(μ-OAc)(bpy)2](ClO4)2 in aqueous medium in the absence of a base and co-catalyst. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1358812] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ram A. Lal
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong, India
| | - Arvind Kumar
- Department of Chemistry, Faculty of Science and Technology, The University of West-Indies, St. Augustine, Trinidad and Tobago
| | - Ibanphylla Syiemlieh
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong, India
| | - Sunshine D. Kurbah
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong, India
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12
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Synthesis and use of dioxime ligands for treatment of leukemia and colon cancer cells. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3752] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Yuan J, Wang X, Liu MJ, Kou HZ. Manganese(III) complexes derived from 1-(2-hydroxybenzamido)-2-((2-hydroxy-3-methoxybenzylidene)amino)ethane: Synthesis, structure and magnetic properties. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.04.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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15
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Henckel DA, Lin YF, McCormick TM, Kaminsky W, Cossairt BM. A doubly deprotonated diimine dioximate metalloligand as a synthon for multimetallic complex assembly. Dalton Trans 2016; 45:10068-75. [DOI: 10.1039/c5dt03650j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An electrocatalytically active cobalt diimine dioximate metalloligand was prepared and explored as a precursor for a variety of multimetallic complexes with Co–Zn, –Cd, –Mn, and –Ru coordination.
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Affiliation(s)
| | - Yuting F. Lin
- University of Washington
- Department of Chemistry
- Seattle
- USA
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16
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Borthakur R, Kumar A, Shangpung S, Lal RA. Synthesis and characterization of perchlorato bridged Cu2(II)Zn(II) heterotrinuclear complexes derived from succinoyldihydrazones. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 138:481-488. [PMID: 25528507 DOI: 10.1016/j.saa.2014.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/21/2014] [Accepted: 11/05/2014] [Indexed: 06/04/2023]
Abstract
In the present paper three new heterotrimetallic Cu(II)-Zn(II)-Cu(II) complexes have been synthesized and characterized by analytical and spectroscopic studies. The molar conductance values for the complexes fall in the region 1.2-1.7Ω(-1)cm(2)mol(-1) in DMSO solution indicating that all of the complexes are non-electrolyte. The dihydrazone ligand is present in enol form in all of the complexes. Both the copper centres have distorted square pyramidal stereochemistry in all of the complexes while the zinc centre in all hetero metal complexes has octahedral stereochemistry. The EPR parameters of the complexes indicate that the copper centre has [Formula: see text] orbital as the ground state. The electron transfer reactions of the complexes have been investigated by cyclic voltammetry.
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Affiliation(s)
- Rosmita Borthakur
- Department of Chemistry, Centre for Advanced Studies in Chemistry, North Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Arvind Kumar
- Department of Chemistry, Faculty of Science and Agriculture, The University of West-Indies, St Augustine, Trinidad and Tobago
| | - Sankey Shangpung
- Department of Chemistry, Centre for Advanced Studies in Chemistry, North Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Ram A Lal
- Department of Chemistry, Centre for Advanced Studies in Chemistry, North Eastern Hill University, Shillong 793022, Meghalaya, India.
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17
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Houton E, Meally ST, Sanz S, Brechin EK, Jones LF. Bulking up: Hexanuclear oximato Fe(III) complexes surrounded by sterically demanding co-ligands. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.06.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Koch A, Kumar A, De AK, Phukan A, Lal RA. Synthesis, characterization and reactivity of trinuclear Cu(II) complexes derived from disalicylaldehyde malonoyldihydrazone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 129:103-113. [PMID: 24727168 DOI: 10.1016/j.saa.2014.02.202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/25/2014] [Accepted: 02/27/2014] [Indexed: 06/03/2023]
Abstract
Three new homotrinuclear copper(II) complexes [Cu3(slmh)(μ-Cl)2(CH3OH)3]⋅0.5CH3OH (1), [Cu3(slmh)(NO3)2(CH3OH)5]⋅1.5CH3OH (2) and [Cu3(slmh)(μ-ClO4)2(CH3OH)3]⋅2CH3OH (3) from disalicylaldehyde malonoyldihydrazone have been synthesized and characterized. The composition of the complexes has been established on the basis of data obtained from analytical and thermoanalytical data. The structure of the complexes has been discussed in the light of molar conductance, electronic, FT-IR and far-IR spectral data, magnetic moment and EPR spectral studies. The molar conductance values for the complexes in DMSO solution indicate that all of them are non-electrolyte. The magnetic moment values for the complexes suggest considerable metal-metal intramolecular interaction between metal ions in the structural unit of the complexes. The EPR spectral features reveal that at RT, the ground state for the complexes is a mixture of the quartet state (S=3/2) and doublet state (S=1/2). At lower temperature, the ground state for the complexes is dx(2)-y(2) with considerable contribution from dz(2) orbital. Dihydrazone ligand is present in enol form in all of the complexes. The complexes have distorted square pyramidal stereochemistry. The electron transfer reactions of the complexes have been investigated by cyclic voltammetry. Hydrogen peroxide mediated oxidation of benzyl alcohol catalyzed by complex 1 has been studied.
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Affiliation(s)
- Angira Koch
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Arvind Kumar
- Department of Chemistry, Faculty of Science and Agriculture, The University of West-Indies, St. Augustine, Trinidad and Tobago
| | - Arjun K De
- Department of Science and Humanities, Tripura Institute of Technology, Narsingarh 799009, Tripura, India
| | - Arnab Phukan
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India
| | - Ram A Lal
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, Meghalaya, India.
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19
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Anderson JS, Peters JC. Low-spin pseudotetrahedral iron(I) sites in Fe₂(μ-S) complexes. Angew Chem Int Ed Engl 2014; 53:5978-81. [PMID: 24753364 DOI: 10.1002/anie.201401018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Indexed: 11/06/2022]
Abstract
Fe(I) centers in iron-sulfide complexes have little precedent in synthetic chemistry despite a growing interest in the possible role of unusually low valent iron in metalloenzymes that feature iron-sulfur clusters. A series of three diiron [(L3Fe)2(μ-S)] complexes that were isolated and characterized in the low-valent oxidation states Fe(II)-S-Fe(II), Fe(II)-S-Fe(I), and Fe(I)-S-Fe(I) is described. This family of iron sulfides constitutes a unique redox series comprising three nearly isostructural but electronically distinct Fe2(μ-S) species. Combined structural, magnetic, and spectroscopic studies provided strong evidence that the pseudotetrahedral iron centers undergo a transition to low-spin S=1/2 states upon reduction from Fe(II) to Fe(I). The possibility of accessing low-spin, pseudotetrahedral Fe(I) sites compatible with S(2-) as a ligand was previously unknown.
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Affiliation(s)
- John S Anderson
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125 (USA)
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20
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Anderson JS, Peters JC. Low-Spin Pseudotetrahedral Iron(I) Sites in Fe2(μ-S) Complexes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201401018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Synthesis, characterization and electrochemical studies of heterometallic manganese(IV)–zinc(II) and manganese(IV)–copper(II) complexes derived from bis(2-hydroxy-1-naphthaldehyde)oxaloyldihydrazone. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.12.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Kostopoulos AK, Katsenis AD, Frost JM, Kessler VG, Brechin EK, Papaefstathiou GS. Circular serendipity: in situ ligand transformation for the self-assembly of an hexadecametallic [CuII16] wheel. Chem Commun (Camb) 2014; 50:15002-5. [DOI: 10.1039/c4cc07582j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A [Cu16II] wheel has been isolated serendipitously from the reaction of acetylacetone dioxime with CuII and LnIII ions. The ligand has been transformed in situ to three different forms, all found within the [Cu16], with the original ligand absent.
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Affiliation(s)
- Andreas K. Kostopoulos
- Laboratory of Inorganic Chemistry
- Department of Chemistry
- National and Kapodistrian University of Athens
- 157 71 Zografou, Greece
| | - Athanassios D. Katsenis
- Laboratory of Inorganic Chemistry
- Department of Chemistry
- National and Kapodistrian University of Athens
- 157 71 Zografou, Greece
| | - Jamie M. Frost
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh, UK
| | - Vadim G. Kessler
- Department of Chemistry
- Swedish University of Agricultural Sciences
- 750 07 Uppsala, Sweden
| | - Euan K. Brechin
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh, UK
| | - Giannis S. Papaefstathiou
- Laboratory of Inorganic Chemistry
- Department of Chemistry
- National and Kapodistrian University of Athens
- 157 71 Zografou, Greece
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23
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Das LK, Drew MGB, Diaz C, Ghosh A. pH dependent facile synthesis of di- and trinuclear oxime based Cu(ii) complexes: antiferromagnetic coupling in the dinuclear cores and spin frustration in the triangular core. Dalton Trans 2014; 43:7589-98. [DOI: 10.1039/c3dt53361a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two antiferromagnetic dinuclear and one spin frustrated trinuclear cores of oxime based Cu(ii) compounds have been synthesized by changing the pH of the reaction mixtures.
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Affiliation(s)
- Lakshmi Kanta Das
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700009, India
| | | | - Carmen Diaz
- Departament de Química Inorgànica
- Facultat de Química
- Universitat de Barcelona
- 08028 Barcelona, Spain
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700009, India
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24
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Uyeda C, Peters JC. Selective nitrite reduction at heterobimetallic CoMg complexes. J Am Chem Soc 2013; 135:12023-31. [PMID: 23865638 DOI: 10.1021/ja4053653] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Heme-containing nitrite reductases bind and activate nitrite by a mechanism that is proposed to involve interactions with Brønsted acidic residues in the secondary coordination sphere. To model this functionality using synthetic platforms that incorporate a Lewis acidic site, heterobimetallic CoMg complexes supported by diimine-dioxime ligands are described. The neutral (μ-NO2)CoMg species 3 is synthesized from the [(μ-OAc)(Br)CoMg](+) complex 1 by a sequence of one-electron reduction and ligand substitution reactions. Data are presented for a redox series of nitrite adducts, featuring a conserved μ-(η(1)-N:η(1)-O)-NO2 motif, derived from this synthon. Conditions are identified for the proton-induced N-O bond heterolysis of bound NO2(-) in the most reduced member of this series, affording the [(NO)(Cl)CoMg(H2O)](+) complex 6. Reduction of this complex followed by protonation leads to the evolution of free N2O. On the basis of these stoichiometric reactivity studies, the competence of complex 1 as a NO2(-) reduction catalyst is evaluated using electrochemical methods. In bulk electrolysis experiments, conducted at -1.2 V vs SCE using Et3NHCl as a proton source, N2O is produced selectively without the competing formation of NH3, NH2OH, or H2.
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Affiliation(s)
- Christopher Uyeda
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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25
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Mandal D, Abtab SMT, Audhya A, Tiekink ER, Endo A, Clérac R, Chaudhury M. Targeted syntheses of homo- and heterotrinuclear complexes involving MII–NiII–MII (M=Ni, Cu, and Pd) nonlinear core: Structure, spectroscopy, magnetic and redox studies. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Borthakur R, Kumar A, Lemtur A, Lal RA. Synthesis, characterization and electrochemical properties of bis(μ2-perchlorato)tricopper(ii) complexes derived from succinoyldihydrazones. RSC Adv 2013. [DOI: 10.1039/c3ra42048e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Dhal P, Nandy M, Sadhukhan D, Zangrando E, Pilet G, Gómez-García CJ, Mitra S. Novel mixed-valence Cu compounds formed by Cuii dimers with double oximato bridges: in situ formation of anionic layer [Cu2(SCN)3]nn−. Dalton Trans 2013; 42:14545-55. [DOI: 10.1039/c3dt51561c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Uyeda C, Peters JC. Access to Formally Ni(I) States in a Heterobimetallic NiZn System. Chem Sci 2013; 4:157-163. [PMID: 25614786 PMCID: PMC4300139 DOI: 10.1039/c2sc21231e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Heterobimetallic NiZn complexes featuring metal centers in distinct coordination environments have been synthesized using diimine-dioxime ligands as binucleating scaffolds. A tetramethylfuran-containing ligand derivative enables a stable one-electron-reduced S = 1/2 species to be accessed using Cp2Co as a chemical reductant. The resulting pseudo-square planar complex exhibits spectroscopic and crystallographic characteristics of a ligand-centered radical bound to a Ni(II) center. Upon coordination of a π-acidic ligand such as PPh3, however, a five-coordinate Ni(I) metalloradical is formed. The electronic structures of these reduced species provide insight into the subtle effects of ligand structure on the potential and reversibility of the NiII/I couple for complexes of redox-active tetraazamacrocycles.
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Affiliation(s)
- Christopher Uyeda
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Jonas C. Peters
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
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29
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Berg N, Hooper TN, Liu J, Beedle CC, Singh SK, Rajaraman G, Piligkos S, Hill S, Brechin EK, Jones LF. Synthetic, structural, spectroscopic and theoretical study of a Mn(iii)–Cu(ii) dimer containing a Jahn–Teller compressed Mn ion. Dalton Trans 2013; 42:207-16. [DOI: 10.1039/c2dt31995k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Scaffidi-Domianello YY, Legin AA, Jakupec MA, Roller A, Kukushkin VY, Galanski M, Keppler BK. Novel oximato-bridged platinum(II) di- and trimer(s): synthetic, structural, and in vitro anticancer activity studies. Inorg Chem 2012; 51:7153-63. [PMID: 22691006 DOI: 10.1021/ic300148e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel platinum complexes of trans geometry [PtCl(2){(Z)-R(H)C═NOH}(2)] [R = Me (1), Et (3)] and [PtCl(2){(E)-R(H)C═NOH}{(Z)-R(H)C═NOH}] [R = Me (2), Et (4)] as well as the classic trans-[PtCl(2)(R(2)C═NOH)(2)] [R = Me, Et] were reacted with an equivalent amount of silver acetate in acetone solution at ambient temperature, resulting in formation of unprecedented head-to-tail-oriented oximato-bridged dimers [PtCl{μ-(Z)-R(H)C═NO}{(Z)-R(H)C═NOH}](2) [R = Me (5), Et (7)], [PtCl{μ-(Z)-R(H)C═NO}{(E)-R(H)C═NOH}](2) [R = Me (6), Et (8)], and [PtCl(μ-R(2)C═NO)(R(2)C═NOH)](2) [R = Me (9), Et (10)], correspondingly. The dimeric species feature a unique six-membered diplatinacycle and represent the first example of oxime ligands coordinated to platinum via the oxygen atom. All complexes were characterized by elemental analyses, electrospray ionization mass spectrometry, IR and multinuclear ((1)H, (13)C, and (195)Pt) NMR spectroscopy, as well as X-ray diffraction in the cases of dimers 6 and 9. Furthermore, the crystal and molecular structures of a trimeric oximato-bridged complex 11 comprising three platinum units connected in a chain way were established. The cytotoxicity of both dimers and the respective monomers was comparatively evaluated in three human cancer cell lines: cisplatin-sensitive CH1 cells as well as cisplatin-resistant SW480 and A549 cells, whereupon structure-activity relationships were drawn. Thus, it was found that dimerization results in a substantial (up to 7-fold) improvement of IC(50) values of (aldoxime)Pt(II) compounds, whereas for the analogous complexes featuring ketoxime ligands the reverse trend was observed. Remarkably, the novel dimers yielded no cross-resistance with cisplatin in SW480 cells, exhibiting up to 2-fold enhanced cytotoxicity in comparison with the CH1 cell line and thereby possessing a promising potential to overcome resistance toward platinum anticancer drugs. The latter point was also confirmed by investigating the potency of apoptosis induction in the case of one monomer as well as one dimer; the investigated complexes proved to be strong apoptotic agents which could induce cell death even in the cisplatin-resistant SW480 cell line.
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31
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Houton E, Taylor SM, Beedle CC, Cano J, Piligkos S, Hill S, Ryder AG, Brechin EK, Jones LF. Ferromagnetic exchange in a twisted, oxime-bridged [MnIII2] dimer. Dalton Trans 2012; 41:8340-7. [DOI: 10.1039/c2dt30674c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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32
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Chanu OB, Kumar A, Ahmed A, Lal R. Synthesis and characterisation of heterometallic trinuclear copper(II) and zinc(II) complexes derived from bis(2-hydroxy-1-naphthaldehyde)oxaloyldihydrazone. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2011.11.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Affiliation(s)
- Benjamin Kaduk
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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34
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Chen H, Ma CB, Yuan DQ, Hu MQ, Wen HM, Liu QT, Chen CN. Syntheses, Structures, and Magnetic Properties of a Family of Tetra-, Hexa-, and Nonanuclear Mn/Ni Heterometallic Clusters. Inorg Chem 2011; 50:10342-52. [DOI: 10.1021/ic201403k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Cheng-Bing Ma
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Da-Qiang Yuan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Ming-Qiang Hu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Hui-Min Wen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Qiu-Tian Liu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Chang-Neng Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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35
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Ruiz E. Exchange coupling constants using density functional theory: Long-range corrected functionals. J Comput Chem 2011; 32:1998-2004. [DOI: 10.1002/jcc.21788] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Revised: 01/28/2011] [Accepted: 02/13/2011] [Indexed: 11/09/2022]
Affiliation(s)
- Eliseo Ruiz
- Departament de Química Inorgànica and Institut de Recerca de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Diagonal 647, Barcelona 08028, Spain.
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36
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Kakanejadifard A, Zabardasti A, Koshki H. Synthesis and characterization of a new vic -dioxime 6,7- bis (hydroxyimino)-9,10-diethylidine-5,8,9,10,11,18-hexahydro-5,8,11,18-tetraazadibenzo[a,e]cyclotetradecane-6,7,12,17-tetraone and its nickel and cobalt complexes. J COORD CHEM 2010. [DOI: 10.1080/00958970903095814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ali Kakanejadifard
- a Faculty of Science, Department of Chemistry , Lorestan University , Khorramabad, Iran
| | - Abedien Zabardasti
- a Faculty of Science, Department of Chemistry , Lorestan University , Khorramabad, Iran
| | - Hooshang Koshki
- a Faculty of Science, Department of Chemistry , Lorestan University , Khorramabad, Iran
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37
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Peralta JE, Melo JI. Magnetic Exchange Couplings with Range-Separated Hybrid Density Functionals. J Chem Theory Comput 2010; 6:1894-9. [DOI: 10.1021/ct100104v] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan E. Peralta
- Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, and Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Cdad. Universitaria, Pab. I, 1428 Buenos Aires, Argentina and CONICET
| | - Juan I. Melo
- Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, and Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Cdad. Universitaria, Pab. I, 1428 Buenos Aires, Argentina and CONICET
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38
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Karipcin F, Dede B, Cengiz M. Synthesis of (2-hydroxo-5-chlorophenylaminoisonitrosoacetyl)phenyl ligands and their complexes: Spectral, thermal and solvent-extraction studies. RUSS J INORG CHEM+ 2010. [DOI: 10.1134/s0036023610040078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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39
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Nanda PK, Bera M, Ferreira AMDC, Paduan-Filho A, Ray D. Formation of out of plane oxime metallacycles in [Cu2] and [Cu4] complexes. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.09.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Chesman ASR, Turner DR, Moubaraki B, Murray KS, Deacon GB, Batten SR. Nucleophilic Addition of Water and Alcohols to Dicyanonitrosomethanide: Ligands with Diverse Bonding Modes in Magnetically Coupled d-Block Complexes. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900779] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Majumder S, Koner R, Lemoine P, Nayak M, Ghosh M, Hazra S, Lucas CR, Mohanta S. Role of Coordinated Water and Hydrogen‐Bonding Interactions in Stabilizing Monophenoxido‐Bridged Triangular Cu
II
M
II
Cu
II
Compounds (M = Cu, Co, Ni, or Fe) Derived from
N
,
N′
‐Ethylenebis(3‐methoxysalicylaldimine): Syntheses, Structures, and Magnetic Properties. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900281] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Samit Majumder
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India, Fax: +91‐33‐23519755
| | - Rajesh Koner
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India, Fax: +91‐33‐23519755
| | - Pascale Lemoine
- Laboratoire de Cristallographie et RMN biologiques UMR 8015, Faculté de Pharmacie, Université Paris Descartes, 4 avenue de l'Observatoire, 75006 Paris, France
| | - Malabika Nayak
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India, Fax: +91‐33‐23519755
| | - Meenakshi Ghosh
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Susanta Hazra
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India, Fax: +91‐33‐23519755
| | - C. Robert Lucas
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL, A1B 3X7, Canada, Fax: +709‐737‐3316,
| | - Sasankasekhar Mohanta
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India, Fax: +91‐33‐23519755
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42
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Comba P, Hausberg S, Martin B. Calculation of Exchange Coupling Constants of Transition Metal Complexes with DFT. J Phys Chem A 2009; 113:6751-5. [DOI: 10.1021/jp900752p] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter Comba
- Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Sascha Hausberg
- Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Bodo Martin
- Universität Heidelberg, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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43
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The synthesis and characterization of some new vic-dioximes and their transition metal complexes. J INCL PHENOM MACRO 2008. [DOI: 10.1007/s10847-008-9512-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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44
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Miras HN, Zhao H, Herchel R, Rinaldi C, Pérez S, Raptis RG. Synthesis and Characterization of Linear Trinuclear Pd, Co, and Pd/Co Pyrazolate Complexes. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800349] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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Bilgin A, Ertem B, Gök Y. Synthesis and Characterization of a Novel Quinoxaline-Substitutedvic-Dioxime and Its Complexes Containing Bis(12-Diazacrown-4) Derivatives. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.1549] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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46
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Synthesis and characterization of novel (E,E)-dioxime and its mono- and polynuclear metal complexes containing azacrown moieties. TRANSIT METAL CHEM 2007. [DOI: 10.1007/s11243-007-0215-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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47
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Pardo E, Ruiz-García R, Lloret F, Julve M, Cano J, Pasán J, Ruiz-Pérez C, Filali Y, Chamoreau LM, Journaux Y. Molecular-Programmed Self-Assembly of Homo- and Heterometallic Penta- and Hexanuclear Coordination Compounds: Synthesis, Crystal Structures, and Magnetic Properties of Ladder-Type CuII2MIIx (M = Cu, Ni; x = 3, 4) Oxamato Complexes with CuII2 Metallacyclophane Cores. Inorg Chem 2007; 46:4504-14. [PMID: 17477522 DOI: 10.1021/ic062453w] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New homo- and heterometallic, hexa- and pentanuclear complexes of formula {[Cu2(mpba)2(H2O)F][Cu(Me5dien)]4}(PF6)(3).5H2O (1), {[Cu2(Me3mpba)2(H2O)2][Cu(Me5dien)]4}(ClO4)(4).12H2O (2), {[Cu2(ppba)2][Cu(Me5dien)]4}(ClO4)4 (3), and [Ni(cyclam)]{[Cu2(mpba)2][Ni(cyclam)]3}(ClO4)(4).6H2O (4) [mpba=1,3-phenylenebis(oxamate), Me3mpba=2,4,6-trimethyl-1,3-phenylenebis(oxamate), ppba=1,4-phenylenebis(oxamate), Me5dien=N,N,N'N' ',N' '-pentamethyldiethylenetriamine, and cyclam=1,4,8,11-tetraazacyclotetradecane] have been synthesized through the use of the "complex-as-ligand/complex-as-metal" strategy. The structures of 1-3 consist of cationic CuII6 entities with an overall [2x2] ladder-type architecture which is made up of two oxamato-bridged CuII3 linear units connected through two m- or p-phenylenediamidate bridges between the two central copper atoms to give a binuclear metallacyclic core of the cyclophane-type. Complex 4 consists of cationic CuII2NiII3 entities with an incomplete [2x2] ladder-type architecture which is made up of oxamato-bridged CuIINiII and CuIINiII2 linear units connected through two m-phenylenediamidate bridges between the two copper atoms to give a binuclear metallacyclophane core. The magnetic properties of 1-3 and 4 have been interpreted according to their distinct "dimer-of-trimers" and "dimer-plus-trimer" structures, respectively, (H=-J(S1A.S3A+S1A.S4A+S2B.S5B+S2B.S6B)-J'S1A.S2B). Complexes 1-4 exhibit moderate to strong antiferromagnetic coupling through the oxamate bridges (-JCu-Cu=81.3-105.9 cm-1; -JCu-Ni=111.6 cm-1) in the trinuclear and/or binuclear units. Within the binuclear metallacyclophane core, a weak to moderate ferromagnetic coupling (J'Cu-Cu=1.7-9.0 cm-1) operates through the double m-phenylenediamidate bridge, while a strong antiferromagnetic coupling (J'Cu-Cu=-120.6 cm-1) is mediated by the double p-phenylenediamidate bridge.
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Affiliation(s)
- Emilio Pardo
- Departament de Química Inorgànica and Departament de Química Orgànica, Instituto de Ciencia Molecular (ICMOL) and Fundació General de la Universitat de València (FGUV), Universitat de València, Paterna, Valencia, E-46980, Spain
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48
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Uysal Ş, Coşkun A, Koç ZE, Uçan M, Uçan HI. Synthesis and characterization of some vic-dioxime and its mononuclear complexes. RUSS J COORD CHEM+ 2007. [DOI: 10.1134/s1070328407050077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Bilgin A, Ertem B, Gok Y, Dilber G, Kilicarslan M. Synthesis and characterization of a new (E,E)-dioxime and its mono and polynuclear complexes containing a 14-membered dithiadiaza macrocyclic moiety. J COORD CHEM 2007. [DOI: 10.1080/0092897041000172005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ahmet Bilgin
- a Faculty of Education , Kocaeli University , 41300 Kocaeli, Turkey
| | - Beytullah Ertem
- b Department of Chemistry , Karadeniz Technical University , 61080 Trabzon, Turkey
| | - Yasar Gok
- b Department of Chemistry , Karadeniz Technical University , 61080 Trabzon, Turkey
| | - Gulsev Dilber
- b Department of Chemistry , Karadeniz Technical University , 61080 Trabzon, Turkey
| | - Meltem Kilicarslan
- b Department of Chemistry , Karadeniz Technical University , 61080 Trabzon, Turkey
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50
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Khanra S, Weyhermüller T, Chaudhuri P. Rational synthesis of a heterotetranuclear CrIII2CuII2 species using a metaloximate as a building block. A magnetostructural study. Dalton Trans 2007:4675-80. [DOI: 10.1039/b706753d] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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