1
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Nicolini A, Anderlini B, Roncaglia F, Cornia A. An efficient transition-metal-free route to oligo- α-pyridylamines via fluoroarenes. CR CHIM 2023. [DOI: 10.5802/crchim.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
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2
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Cornia A, Barra AL, Bulicanu V, Clérac R, Cortijo M, Hillard EA, Galavotti R, Lunghi A, Nicolini A, Rouzières M, Sorace L, Totti F. The Origin of Magnetic Anisotropy and Single-Molecule Magnet Behavior in Chromium(II)-Based Extended Metal Atom Chains. Inorg Chem 2020; 59:1763-1777. [PMID: 31967457 PMCID: PMC7901656 DOI: 10.1021/acs.inorgchem.9b02994] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Indexed: 02/08/2023]
Abstract
Chromium(II)-based extended metal atom chains have been the focus of considerable discussion regarding their symmetric versus unsymmetric structure and magnetism. We have now investigated four complexes of this class, namely, [Cr3(dpa)4X2] and [Cr5(tpda)4X2] with X = Cl- and SCN- [Hdpa = dipyridin-2-yl-amine; H2tpda = N2,N6-di(pyridin-2-yl)pyridine-2,6-diamine]. By dc/ac magnetic techniques and EPR spectroscopy, we found that all these complexes have easy-axis anisotropies of comparable magnitude in their S = 2 ground state (|D| = 1.5-1.8 cm-1) and behave as single-molecule magnets at low T. Ligand-field and DFT/CASSCF calculations were used to explain the similar magnetic properties of tri- versus pentachromium(II) strings, in spite of their different geometrical preferences and electronic structure. For both X ligands, the ground structure is unsymmetric in the pentachromium(II) species (i.e., with an alternation of long and short Cr-Cr distances) but is symmetric in their shorter congeners. Analysis of the electronic structure using quasi-restricted molecular orbitals (QROs) showed that the four unpaired electrons in Cr5 species are largely localized in four 3d-like QROs centered on the terminal, "isolated" Cr2+ ion. In Cr3 complexes, they occupy four nonbonding combinations of 3d-like orbitals centered only on the two terminal metals. In both cases, then, QRO eigenvalues closely mirror the 3d-level pattern of the terminal ions, whose coordination environment remains quite similar irrespective of chain length. We conclude that the extent of unpaired-electron delocalization has little impact on the magnetic anisotropy of these wire-like molecular species.
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Affiliation(s)
- Andrea Cornia
- Department of Chemical and Geological Sciences,
University of Modena and Reggio Emilia & INSTM, 41125
Modena, Italy
| | - Anne-Laure Barra
- Laboratoire National des Champs Magnétiques
Intenses-CNRS, Université Grenoble-Alpes, 38042 Grenoble
Cedex 9, France
| | - Vladimir Bulicanu
- Univ. Bordeaux, CNRS, Centre de Recherche
Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Rodolphe Clérac
- Univ. Bordeaux, CNRS, Centre de Recherche
Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Miguel Cortijo
- Univ. Bordeaux, CNRS, Centre de Recherche
Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Elizabeth A. Hillard
- Univ. Bordeaux, CNRS, Centre de Recherche
Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Rita Galavotti
- Department of Chemical and Geological Sciences,
University of Modena and Reggio Emilia & INSTM, 41125
Modena, Italy
| | - Alessandro Lunghi
- School of Physics and CRANN Institute,
Trinity College Dublin, Dublin 2,
Ireland
| | - Alessio Nicolini
- Department of Chemical and Geological Sciences,
University of Modena and Reggio Emilia & INSTM, 41125
Modena, Italy
- Department of Physics, Informatics, and Mathematics,
University of Modena and Reggio Emilia, 41125 Modena,
Italy
| | - Mathieu Rouzières
- Univ. Bordeaux, CNRS, Centre de Recherche
Paul Pascal, CRPP, UMR 5031, 33600 Pessac, France
| | - Lorenzo Sorace
- Department of Chemistry “Ugo Schiff”,
University of Florence & INSTM, 50019 Sesto Fiorentino
(FI), Italy
| | - Federico Totti
- Department of Chemistry “Ugo Schiff”,
University of Florence & INSTM, 50019 Sesto Fiorentino
(FI), Italy
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3
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Long chain defective metal string complex with modulated oligo-α-pyridylamino ligand: Synthesis, crystal structure and properties. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.126998] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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Chiu CC, Lee GH, Lin TS, Peng SM. Ligand effects on the structure, mixed-valence sites and magnetic properties of novel pentanickel string complexes. Dalton Trans 2019; 48:8464-8477. [PMID: 31116203 DOI: 10.1039/c9dt01363f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report the syntheses, characterization, electronic structures and magnetic properties of four redox pairs of novel nickel-extended metal-atom chain (EMAC) complexes containing pyridine-, naphthyridine- and sulfonyl-containing ligands (H2Tspnda and H2Mspnda) (1-2 and 5-6). We further study the corresponding phenyl-substituted ligands (H2Tsphpnda and H2Msphpnda) (3-4 and 7-8) to examine the details of ligand effects. The X-ray structure of one-electron-reduced [Ni5]9+ complexes shows shorter Ni-Ni bond distances (2.2646(6) for 1, 2.2943(7) for 3, 2.2436(11) for 5 and 2.2322(8) Å for 7) in comparison with an average Ni-Ni distance of 2.3187(8) Å for these complexes, indicative of a partial metal-metal bond interaction in the mixed-valence [Ni2]3+ (S = 3/2) unit. The most striking result is that the [Ni2]3+ site migrates from Ni(1)-Ni(2) to Ni(2)-Ni(3) when we replace the p-tolyl-sulfonyl group with methyl-sulfonyl group. These complexes present a rare example of the effect of crystal packing on the symmetric molecular structure yielding unsymmetric electronic distribution. Cyclic voltammetry measurements show four reversible redox waves and display the lower potentials of the [Ni5]9+ complexes. These unusual lower potentials facilitate one-electron oxidation of these four complexes to [Ni5]10+-core forms. We applied the magnetic susceptibility and EPR measurements to examine the magnetic properties of these four [Ni5]9+-core pentanickel complexes and study the bonding nature of these mixed-valence [Ni2]3+ units. Indeed, the results of EPR measurements reflect the migration of the mixed-valence site and the change of symmetry. Surprisingly, the oxidized [Ni5]10+ counterparts behave differently: complex 2 exhibits an antiferromagnetic interaction with J = -13.59 cm-1 between the two terminal Ni ions, while the others (4, 6 and 8) display diamagnetic properties as all of the Ni2+ ions are in low-spin (S = 0) states. These three complexes, to the best of our knowledge, are the first examples of all Ni2+ ions in a null spin configuration for pentanickel chains. Even though the structures of these complexes are similar to each other, their corresponding electronic structure and oxidized products show drastic changes in their magnetic properties and bonding nature. These differences of the properties and bonding nature of these pentanickel complexes are attributed to the ligand effects.
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Affiliation(s)
- Cheng-Chang Chiu
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., 10617 Taipei, Taiwan.
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., 10617 Taipei, Taiwan.
| | - Tien-Sung Lin
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., 10617 Taipei, Taiwan.
| | - Shie-Ming Peng
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., 10617 Taipei, Taiwan. and Institute of Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei, Taiwan
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5
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Ou JH, Jin BY. Band Structures of Quasi-One-Dimensional Incommensurate Helical Systems: A Case Study of Infinite Chromium Extended Metal Atom Chain. J Phys Chem A 2018; 122:9199-9208. [PMID: 30444123 DOI: 10.1021/acs.jpca.8b07144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Extended metal atom chains (EMACs) are promising candidates for molecular wires but their band structures remain to be explored. As a quasi-one-dimensional (Q1D) system, the incommensurate helical nature of EMACs hinders such calculations. In this work, we resolved this issue via explicit implementation of helical symmetry. Moreover, the pattern of metal d bands was rationalized by a systematic investigation on a series of related Q1D helical systems. Two critical factors, helical ligand field and chemically asymmetric ligand field, are proposed and identified. We found that the symmetry and ligand fields of the system dominate the pattern of the metal d bands, instead of specific chemical composition of ligands. The presented method and rationale are applicable to not only EMACs but also related Q1D helical systems.
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Affiliation(s)
- Jen-Hao Ou
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Bih-Yaw Jin
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
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6
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Linear pentanuclear nickel(II) and tetranuclear copper(II) complexes with pyrazine-modulated tripyridyldiamine ligand: Synthesis, structure and properties. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.08.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Harisomayajula NVS, Wu BH, Lu DY, Kuo TS, Chen IC, Tsai YC. Ligand-Unsupported Cuprophilicity in the Preparation of Dodecacopper(I) Complexes and Raman Studies. Angew Chem Int Ed Engl 2018; 57:9925-9929. [DOI: 10.1002/anie.201801955] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Indexed: 11/05/2022]
Affiliation(s)
- N. V. Satyachand Harisomayajula
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
| | - Bo-Han Wu
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
| | - Duan-Yen Lu
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry; National (Taiwan) Normal University; 88, Sec. 4, Ting-Chow Rd Taipei 116 Taiwan
| | - I-Chia Chen
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
| | - Yi-Chou Tsai
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
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8
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Harisomayajula NVS, Wu BH, Lu DY, Kuo TS, Chen IC, Tsai YC. Ligand-Unsupported Cuprophilicity in the Preparation of Dodecacopper(I) Complexes and Raman Studies. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801955] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- N. V. Satyachand Harisomayajula
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
| | - Bo-Han Wu
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
| | - Duan-Yen Lu
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry; National (Taiwan) Normal University; 88, Sec. 4, Ting-Chow Rd Taipei 116 Taiwan
| | - I-Chia Chen
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
| | - Yi-Chou Tsai
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences and Matters; National Tsing Hua University; 101, Sec. 2, Guang-Fu Road Hsinchu 300 Taiwan
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9
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Ismayilov RH, Valiyev FF, Song Y, Wang WZ, Lee GH, Peng SM, Suleimanov BA. Double-stranded helicates of Ni(II), Co(II), Fe(II) and Zn(II) with oligo-α-naphthyridylamino ligand: Synthesis, structure and properties. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.12.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Dirvanauskas A, Galavotti R, Lunghi A, Nicolini A, Roncaglia F, Totti F, Cornia A. Solution structure of a pentachromium(ii) single molecule magnet from DFT calculations, isotopic labelling and multinuclear NMR spectroscopy. Dalton Trans 2018; 47:585-595. [DOI: 10.1039/c7dt03931j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solution NMR spectroscopy on isotopically-labelled samples of [Cr5(tpda)4Cl2] unveils a D4 symmetric molecule, implying fast shuttling between the two unsymmetric ground configurations over NMR timescale.
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Affiliation(s)
- Aivaras Dirvanauskas
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
- Department of Chemistry
| | - Rita Galavotti
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
| | - Alessandro Lunghi
- Department of Chemistry ‘Ugo Schiff’
- University of Florence & INSTM
- I-50019 Sesto Fiorentino (FI)
- Italy
| | - Alessio Nicolini
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
| | - Fabrizio Roncaglia
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
| | - Federico Totti
- Department of Chemistry ‘Ugo Schiff’
- University of Florence & INSTM
- I-50019 Sesto Fiorentino (FI)
- Italy
| | - Andrea Cornia
- Department of Chemical and Geological Sciences
- University of Modena and Reggio Emilia & INSTM
- I-41125 Modena
- Italy
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11
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The first defective extended chromium atom chain complex with amine ligand containing naphthyridine and pyrazine. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.02.090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Wang WZ, Zhao D, Zhao MJ, Li H, Liu S, Ismayilov RH, Lee GH, Peng SM. Linear hexanuclear nickel complexes with rich electrochemical features and facility to reduction. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Ismayilov RH, Wang WZ, Lee GH, Peng SM, Suleimanov BA. Synthesis, crystal structure and properties of a pyrimidine modulated tripyridyldiamino ligand and its complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.11.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Guillet JL, Bhowmick I, Shores MP, Daley CJA, Gembicky M, Golen JA, Rheingold AL, Doerrer LH. Thiocyanate-Ligated Heterobimetallic {PtM} Lantern Complexes Including a Ferromagnetically Coupled 1D Coordination Polymer. Inorg Chem 2016; 55:8099-109. [DOI: 10.1021/acs.inorgchem.6b01182] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jesse L. Guillet
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Indrani Bhowmick
- Department of Chemistry, Colorado State University, Fort
Collins, Colorado 80523-1872, United States
| | - Matthew P. Shores
- Department of Chemistry, Colorado State University, Fort
Collins, Colorado 80523-1872, United States
| | - Christopher J. A. Daley
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0332, La Jolla, California 92093, United States
| | - Milan Gembicky
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0332, La Jolla, California 92093, United States
| | - James A. Golen
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0332, La Jolla, California 92093, United States
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0332, La Jolla, California 92093, United States
| | - Linda H. Doerrer
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
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15
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Wang W, Zhao D, Tsao T, Ismayilov R, Lee G, Peng S. A Very Stable Nickel Broken‐Chain Complex with Isolated Ni–Ni Interactions. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500674] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wen‐Zhen Wang
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, 18 Dian‐zi‐er Road, Xi'an, Shaanxi, P. R. China
| | - Dan Zhao
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, 18 Dian‐zi‐er Road, Xi'an, Shaanxi, P. R. China
| | - Ting‐Bin Tsao
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan, Republic of China, http://www.ch.ntu.edu.tw/chinese.html
| | - Rayyat Ismayilov
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan, Republic of China, http://www.ch.ntu.edu.tw/chinese.html
- Institute of Chemistry, Academia Sinica, 11529 Taipei, Taiwan, Republic of China
| | - Gene‐Hsiang Lee
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan, Republic of China, http://www.ch.ntu.edu.tw/chinese.html
| | - Shie‐Ming Peng
- Department of Chemistry, National Taiwan University, 10617 Taipei, Taiwan, Republic of China, http://www.ch.ntu.edu.tw/chinese.html
- Institute of Chemistry, Academia Sinica, 11529 Taipei, Taiwan, Republic of China
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Cornia A, Rigamonti L, Boccedi S, Clérac R, Rouzières M, Sorace L. Magnetic blocking in extended metal atom chains: a pentachromium(ii) complex behaving as a single-molecule magnet. Chem Commun (Camb) 2014; 50:15191-4. [DOI: 10.1039/c4cc06693f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Wu Y, Wang WZ, Ismayilov RH, Lee GH, Peng SM. A coordination polymer consisting of two different one-dimensional copper(II) chains. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2014; 70:285-8. [PMID: 24594718 DOI: 10.1107/s2053229614002472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 02/03/2014] [Indexed: 11/10/2022]
Abstract
The title compound, catena-poly[[[diaqua(methanol-κO)copper(II)]-μ-N-(4-methylpyrimidin-2-yl-κN(1))pyrazin-2-amine-κ(2)N(1):N(4)] [[aqua(aqua/methanol-κO)(perchlorato-κO)copper(II)]-μ-N-(4-methylpyrimidin-2-yl-κN(1))pyrazin-2-amine-κ(2)N(1):N(4)] tris(perchlorate) methanol monosolvate 1.419-hydrate], {[Cu(C9H9N5)(CH3OH)(H2O)2][Cu(C9H9N5)(ClO4)(CH3OH)0.581(H2O)1.419](ClO4)3·CH3OH·1.419H2O}n, is a one-dimensional straight-chain polymer of N-(4-methylpyrimidin-2-yl)pyrazin-2-amine (L) with Cu(ClO4)2. The complex consists of two crystallographically independent one-dimensional chains in which the Cu(II) atoms exhibit two different octahedral coordination geometries. The L ligand coordinates to two Cu(II) centres in a tridentate manner, with the pyrazine ring acting as a bridge linking the Cu(II) coordination units and building an infinite one-dimensional chain. Extensive hydrogen bonding among perchlorate anions, water molecules and L ligands results in three-dimensional networks.
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Affiliation(s)
- Yang Wu
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, People's Republic of China
| | - Wen Zhen Wang
- School of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, People's Republic of China
| | | | - Gene Hsiang Lee
- Instrumentation Centre, National Taiwan University, Taipei 106, Taiwan
| | - Shie Ming Peng
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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18
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Wang WZ, Wu Y, Ismayilov RH, Kuo JH, Yeh CY, Lee HW, Fu MD, Chen CH, Lee GH, Peng SM. A magnetic and conductive study on a stable defective extended cobalt atom chain. Dalton Trans 2014; 43:6229-35. [DOI: 10.1039/c3dt53080a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A defective extended cobalt atom chain complex has been synthesized and the magnetism and conductance are studied. The formation and the electron transporting pathway of EMACs are investigated.
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Affiliation(s)
- Wen-Zhen Wang
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an, P R China
| | - Yang Wu
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an, P R China
| | - Rayyat H. Ismayilov
- Institute of Chemical Problems of Azerbaijan Academy of Sciences
- , Azerbaijan Republic
| | - Juao-Hui Kuo
- Department of Chemistry
- National Taiwan University
- Taipei, Republic of China
| | - Chen-Yu Yeh
- Department of Chemistry
- National Chung Hsing University
- Taichung, Republic of China
| | - Hsuan-Wei Lee
- Department of Chemistry
- National Chung Hsing University
- Taichung, Republic of China
| | - Ming-Dung Fu
- Department of Chemistry
- National Taiwan University
- Taipei, Republic of China
| | - Chun-hsien Chen
- Department of Chemistry
- National Taiwan University
- Taipei, Republic of China
| | - Gene-Hsiang Lee
- Department of Chemistry
- National Taiwan University
- Taipei, Republic of China
| | - Shie-Ming Peng
- Department of Chemistry
- National Taiwan University
- Taipei, Republic of China
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19
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Hua SA, Tsai YC, Peng SM. A Journey of Metal-metal Bonding beyond Cotton's Quadruple Bonds. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201300417] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Wilkinson LA, McNeill L, Scattergood PA, Patmore NJ. Hydrogen Bonding and Electron Transfer between Dimetal Paddlewheel Compounds Containing Pendant 2-Pyridone Functional Groups. Inorg Chem 2013; 52:9683-91. [PMID: 23927688 DOI: 10.1021/ic401555g] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Luke A Wilkinson
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK
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21
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Wang WZ, Hsieh CL, Ismayilov RH, Hsu CH, Liu IPC, Liu YH, Lee GH, Peng SM. Transition metal complexes of a super rigid anthyridine ligand: structural, magnetic and DFT studies. NEW J CHEM 2012. [DOI: 10.1039/c2nj40452d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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22
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Wang WZ, Ismayilov RH, Lee GH, Huang YL, Yeh CY, Fu MD, Chen CH, Peng SM. Fine tuning of pentachromium(ii) metal string complexes through elaborate design of ligand. NEW J CHEM 2012. [DOI: 10.1039/c1nj20512a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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24
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Ho ML, Shih CH, Lee CH, Lee GH. Synthesis, structures and photoluminescence properties of silver(i) complexes with N,N′-di(pyrazin-2-yl)pyridine-2,6-diamine. CrystEngComm 2011. [DOI: 10.1039/c0ce00294a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pardo E, Ferrando-Soria J, Dul MC, Lescouëzec R, Journaux Y, Ruiz-García R, Cano J, Julve M, Lloret F, Cañadillas-Delgado L, Pasán J, Ruiz-Pérez C. Oligo-m-phenyleneoxalamide Copper(II) Mesocates as Electro-Switchable Ferromagnetic Metal-Organic Wires. Chemistry 2010; 16:12838-51. [DOI: 10.1002/chem.201001737] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wang WZ, Ismayilov RH, Lee GH, Wen YS, Peng SM. Study on a pyrazine-modulated tetrapyridyltriamide and its complexes: Synthesis, structure and properties. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.03.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mashima K. Linearly Aligned Metal Clusters: Versatile Reactivity and Bonding Nature of Tetrametal M–Mo–Mo–M Complexes (M = Pt, Pd, Ir, and Rh) Supported by 6-Diphenylphosphino-2-pyridonato Ligand. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20090281] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Miao XH, Zhu LG. Synthesis, Structure, and Cyclic Voltammetric Property of Metal String Complex [Ni3(dpa)4(ClO4)(Cl)]·CH2Cl2. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.200900396] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Metal–Metal Bonds in Chains of Three or More Metal Atoms: From Homometallic to Heterometallic Chains. STRUCTURE AND BONDING 2010. [DOI: 10.1007/978-3-642-05243-9_1] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Matsumoto T, Shiga T, Noguchi M, Onuki T, Newton GN, Hoshino N, Nakano M, Oshio H. Contrasting Magnetism of [MnIII4] and [MnII2MnIII2] Squares. Inorg Chem 2009; 49:368-70. [DOI: 10.1021/ic902052f] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takuto Matsumoto
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan
| | - Takuya Shiga
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan
| | - Mao Noguchi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan
| | - Tatsuya Onuki
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan
| | - Graham N. Newton
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan
| | - Norihisa Hoshino
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan
| | - Motohiro Nakano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka 565-0871, Japan
| | - Hiroki Oshio
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan
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Ismayilov RH, Wang WZ, Lee GH, Chien CH, Jiang CH, Chiu CL, Yeh CY, Peng SM. Redox Modification of EMACs Through the Tuning of Ligands: Heptametal(II) Complexes of Pyrazine-Modulated Oligo-α-pyridylamido Ligands. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900046] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Dawe LN, Shuvaev KV, Thompson LK. Polytopic ligand directed self-assembly—polymetallic [n×n] grids versus non-grid oligomers. Chem Soc Rev 2009; 38:2334-59. [DOI: 10.1039/b807219c] [Citation(s) in RCA: 163] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wang WZ, Ismayilov RH, Wang RR, Huang YL, Yeh CY, Lee GH, Peng SM. First stable reduced form of [Co(5)](+10): fine tuning of linear pentacobalt(ii) complexes containing delocalized metal-metal bonds through ligand modification. Dalton Trans 2008:6808-16. [PMID: 19153628 DOI: 10.1039/b811520f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pentacobalt EMACs [Co(5)(mu(5)-dpzpda)(4)X(2)] (X = Cl(-) (), NCS(-) ()) with fine-tuning of the supporting ligand based on the tripyridyldiamine ligand, N,N'-di(pyrazin-2-yl)pyridine-2,6-diamine (H(2)dpzpda), and their reduced form (Ph(4)P)[Co(5)(mu(5)-dpzpda)(4)X(2)] (X = Cl(-) (), NCS(-) ()) were first synthesized and structurally characterized. The structures of showed direct Co-Co bonds with Co-Co distances in the range 2.2385(7)-2.2888(15) A, and valence electrons delocalized through the whole metal chain with distances of longer than 9.06 A. The distances of the inner Co-Co bonds and the Co-axial ligands became longer after reduction, whereas no significant change was observed in the distances of the outer Co-Co bonds and Co-N (supporting ligand) bonds, which was consistent with the MO analysis. Electrochemical studies on both and showed one reversible oxidation and one reversible reduction at E(1/2) = +0.82 and -0.05 V for , and at E(1/2) = +0.89 and +0.02 V for , respectively. The redox reactions of the thiocyanate complex happened at higher potentials than the chloride complex . A magnetism study of revealed anomalous magnetic behaviour similar to that of heptacobalt EMACs, and a deviation from the Curie-Weiss law was observed. The chi(M)T value at 300 K is 0.84 and 1.16 emu K mol(-1) for and , respectively, suggesting spin-equilibrium or a spin-admixture between doublet and quartet states arising from the Boltzmann distribution over different energy levels. Similar results were obtained for and , showing intermediate chi(M)T values between a diamagnetic and a triplet state of 0.15-0.96 emu K mol(-1) in the temperature range 5-300 K. The structural and magnetic results were interpreted through an EHMO study.
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Affiliation(s)
- Wen-Zhen Wang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
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Cotton FA, Murillo CA, Wang Q, Young MD. Unusual Magnetism of an Unsymmetrical Trinickel Chain. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800808] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ismayilov RH, Wang WZ, Wang RR, Huang YL, Yeh CY, Lee GH, Peng SM. Stabilization of Long Cationic EMACs by Reduction or Loss of One Metal Ion. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800450] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Ochsenbein S, Tuna F, Rancan M, Davies R, Muryn C, Waldmann O, Bircher R, Sieber A, Carver G, Mutka H, Fernandez-Alonso F, Podlesnyak A, Engelhardt L, Timco G, Güdel H, Winpenny R. Studies of Finite Molecular Chains: Synthesis, Structural, Magnetic and Inelastic Neutron Scattering Studies of Hexa- and Heptanuclear Chromium Horseshoes. Chemistry 2008; 14:5144-58. [DOI: 10.1002/chem.200800227] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Pantazis DA, Murillo CA, McGrady JE. A re-evaluation of the two-step spin crossover in the trinuclear cation [Co3(dipyridylamido)4Cl2]+. Dalton Trans 2008:608-14. [DOI: 10.1039/b715021k] [Citation(s) in RCA: 20] [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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Wang WZ, Ismayilov RH, Lee GH, Wang HT, Wang RR, Peng SM. Control of Structure and Magnetic Interaction Through Ligand Design: One-Dimensional Complexes from Ferromagnetic to Antiferromagnetic Coupling. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200700881] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Wang WZ, Ismayilov RH, Lee GH, Liu IPC, Yeh CY, Peng SM. The nano-scale molecule with the longest delocalized metal–metal bonds: linear heptacobalt(ii) metal string complexes [Co7(µ7-L)4X2]. Dalton Trans 2007:830-9. [PMID: 17297510 DOI: 10.1039/b614661a] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new type of pyrazine-modulated oligo-alpha-pyridylamino ligands, N2-(pyrazin-2-yl)-N6-(6-(pyrazin-2-ylamino)pyridin-2-yl)pyridine-2,6-diamine (H3pzpz) and N2-(pyrazin-2-yl)-N6-(6-(pyridin-2-ylamino)pyridin-2-yl)pyridine-2,6-diamine (H3tpz), were synthesized and characterized by IR, 1H NMR and MS(FAB). Using and , the linear heptacobalt(II) metal string complexes [Co7(micro7-L)4X2] (L=pzpz3-, X=Cl-, NCS-; L=tpz3-, X=Cl-, X=NCS-) were synthesized and structurally characterized. The structures showed the shortest Co-Co distance (2.194 A) and the longest Co chain (13.5 A) obtained to date with direct Co-Co bonds. The Co-Co distances are in the range 2.194-2.309 A. Electrochemical studies showed two reversible oxidations and one reversible reduction, while all the redox reactions of H3pzpz complexes, and , occurred at higher potentials than H3tpz complexes, and . The complexes are fairly stable to oxidation. Temperature-dependent magnetic research on revealed anomalous magnetic behavior with intermediate magnetic moment values between quartet and doublet states, and deviation from the Curie-Weiss law.
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Affiliation(s)
- Wen-Zhen Wang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC
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Ismayilov RH, Wang WZ, Lee GH, Wang RR, Liu IPC, Yeh CY, Peng SM. New versatile ligand family, pyrazine-modulated oligo-α-pyridylamino ligands, from coordination polymer to extended metal atom chains. Dalton Trans 2007:2898-907. [PMID: 17607404 DOI: 10.1039/b700533d] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we designed and synthesized a new ligand, di(2-pyrazyl)amine (Hdpza) (1) and studied its coordination modes and the corresponding complexes with Cu(II), Co(II), Ni(II) and Cr(II). Hdpza is an analogue of the well-studied di(2-pyridyl)amine (Hdpa) ligand, which was used to generate the first extended metal atom chain. Three types of coordination modes were found: anti-anti style which resulted in a mononuclear compound [Cu(Hdpza)(2)(H(2)O)(2)](ClO(4))(2) (2); anti-syn which was observed in a complex for the first time and resulted in a 2-D coordination polymer [Co(mu(2)-Hdpza)(2)(NCS)(2)] (3); and syn-syn type which was observed in extended metal atom chains [Ni(3)(mu(3)-dpza)(4)Cl(2)] (4), [Ni(3)(mu(3)-dpza)(4)(NCS)(2)] (5) and [Cr(3)(mu(3)-dpza)(4)Cl(2)] (6). Weak antiferromagnetic coupling via Hdpza was observed in 3, whereas magnetic studies on extended metal atom chains 4 and 5 revealed that the interaction parameter was more than -200 cm(-1). Electrochemistry showed that the extended metal atom chains 4-6 are much more stable to oxidation than the Hdpa complexes, and are able to undergo reduction.
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