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Kant S, Saha S, Lloret F, Cano J, Mukherjee R. A tetracobalt(II) cluster with a two vertex truncated dicubane topology endogenously supported by carboxylate-based (2-pyridyl)methylamine ligands: magneto-structural and DFT studies. Dalton Trans 2023; 52:11922-11933. [PMID: 37574905 DOI: 10.1039/d3dt01131c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
A reaction between CoCl2 and L3-(CO2-)2 (2 : 1 stoichiometry) in CH3OH affords a discrete complex [CoII4-{L3-(CO2-)2}2(μ3-OCH3)2(CH3OH)2(H2O)2Cl2] (1) [L3-(CO2-)2 = 3-[N-{2-(pyridin-2-yl)methyl}amino]-bis(propionate)]. The structure of 1 reveals two terminal mononuclear CoII{L3-(CO2-)2}Cl units connected by a dimeric CoII2(μ3-OCH3)2(CH3OH)2(H2O) unit present in the centre through two methoxo (μ3-OCH3)- and two carboxylate (μ-1,1-OCO-) bridges affording a tetranuclear coordination cluster of Co(II) with a defective dicubane topology. In 1, Co1 (terminal) has distorted octahedral CoIIN2O3Cl and the central Co2 has CoIIO6 coordination. Such coordination arrangements afford the observed topology. Variable-temperature magnetic studies reveal anti-ferromagnetic coupling in 1. Three magnetic exchange interactions (one anti-ferromagnetic and two ferromagnetic: J1 = +3.3 cm-1 (Co⋯Co 3.176 Å; μ-1,1-OCO- and μ3-OCH3 bridges), J2 = -2.5 cm-1 (Co⋯Co 3.228 Å; μ-1-OCO- and μ3-OCH3 bridges) and J3 = +10.6 cm-1 (Co⋯Co 3.084 Å; two μ3-OCH3 bridges)) have been identified, with the inclusion of the orbital reduction parameter (α = Aκ = 1.38), spin-orbit coupling (λ = -158 cm-1) and axial distortion (energy gap Δ = -975 cm-1 between singlet and doublet levels), rationalized by density functional theory (DFT) calculations.
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Affiliation(s)
- Shashi Kant
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
- Department of Chemistry, Bhola Prasad Singh College, Bhore, Gopalganj (Jai Prakash University Chapra), Bihar 841426, India
| | - Sayan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de València, Polígono de la Coma, s/n, 46980 Paterna, València, Spain
| | - Joan Cano
- Instituto de Ciencia Molecular/Departament de Química Inorgànica, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain.
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
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Padhi SK, Rai S, Akhter SS. Redox-Induced Structural Switching through Sporadic Pyridine-Bridged CoIICoII Dimer and Electrocatalytic Proton Reduction. Inorg Chem 2020; 59:7810-7821. [DOI: 10.1021/acs.inorgchem.0c00911] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sumanta Kumar Padhi
- Artificial Photosynthesis Laboratory, Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India 826004
| | - Surabhi Rai
- Artificial Photosynthesis Laboratory, Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India 826004
| | - Sk Samim Akhter
- Artificial Photosynthesis Laboratory, Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India 826004
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3
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Sethi S, Jena S, Das PK, Behera N. Synthetic approach and structural diversities of pyridylpyrazole derived late transition metal complexes. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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CuII2, CuII4 and CuII6 complexes with 3-(2-pyridyl)pyrazolate. Structure, magnetism and core interconversion. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.07.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Kim D, Kang SK. Crystal structure of aqua-(1 H-pyrazole-κ N2)(pyridine-2,6-di-carboxyl-ato-κ 3O2, N, O6)copper(II) dihydrate. Acta Crystallogr E Crystallogr Commun 2017; 73:1875-1877. [PMID: 29250406 PMCID: PMC5730243 DOI: 10.1107/s2056989017016231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 11/10/2017] [Indexed: 03/28/2024]
Abstract
In the title compound, [Cu(C7H3NO4)(C3H4N2)(H2O)]·2H2O, the CuII atom is coordinated by three O atoms and two N atoms, provided by a tridentate pyridine-2,6-di-carboxyl-ate (pdc), one pyrazole and one water ligand, forming a slightly distorted square-pyramidal geometry [range of O-Cu-O and O-Cu-N bond angles = 79.55 (8)-166.22 (10)°]. The water mol-ecule is positioned at the apical position. In the crystal, the complex mol-ecule and the two crystallographically independent non-coordinating water mol-ecules are linked into a supra-molecular layer structure parallel to the ab plane via O-H⋯O and N-H⋯O hydrogen bonds.
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Affiliation(s)
- Daeyoung Kim
- Department of Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Sung Kwon Kang
- Department of Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
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Kim D, Kang SK. Crystal structure of catena-poly[[silver(I)-{μ-2,6-bis-[(1H-pyrazol-1-yl)meth-yl]pyridine-κ(3) N (1),N (2):N (2')}] nitrate]. Acta Crystallogr E Crystallogr Commun 2015; 71:m79-80. [PMID: 26029411 PMCID: PMC4438834 DOI: 10.1107/s2056989015004120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 02/26/2015] [Indexed: 11/23/2022]
Abstract
In the title complex, {[Ag(C13H13N5)]NO3} n , the Ag(I) atom is coordinated by three N atoms from two bidentate/monodentate pyrazolylpyridyl ligands to form a distorted trigonal-planar geometry [range of angles: 83.34 (6) (chelate ring) to 139.15 (7) °]. The chelate ring has a distorted boat conformation. The dihedral angle between the pyridyl ring and the coordinating pyrazolyl ring is 67.22 (6)°. The non-coordinating pyrazolyl ring is twisted by 62.97 (7)° from the pyridyl ring. In the crystal, the complex cations are arranged in polymeric chains along the c-axis direction, with the nitrate counter-anions situated in between. Weak C-H⋯O hydrogen bonds link the ions into a three-dimensional network.
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Affiliation(s)
- Daeyoung Kim
- Department of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Sung Kwon Kang
- Department of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea
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Formation of 1D-Chain via C–H⋯Cl Interaction Utilizing [(L3)ZnIICl2] (L3 = 2-[3-(2′-Pyridyl)pyrazol-1-ylmethyl]-(1-methylimidazole)) Tecton. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2014. [DOI: 10.1007/s40010-014-0137-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Sharma AK, Lloret F, Mukherjee R. Phenolate- and Acetate (Both μ2-1,1 and μ2-1,3 Modes)-Bridged Linear CoII3 and CoII2MnII Trimers: Magnetostructural Studies. Inorg Chem 2013; 52:4825-33. [DOI: 10.1021/ic302259t] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anuj Kumar Sharma
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
| | - Francesc Lloret
- Departament de Quımíca,
Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de Valeńcia, Polígono de
la Coma, s/n, 46980-Paterna (València), Spain
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Arora H, Barman SK, Lloret F, Mukherjee R. Isostructural Dinuclear Phenoxo-/Acetato-Bridged Manganese(II), Cobalt(II), and Zinc(II) Complexes with Labile Sites: Kinetics of Transesterification of 2-Hydroxypropyl-p-nitrophenylphosphate. Inorg Chem 2012; 51:5539-53. [DOI: 10.1021/ic201971t] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Himanshu Arora
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
| | - Suman K. Barman
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
| | - Francesc Lloret
- Departament de Quı́mica Inorgànica/Instituto de
Ciencia Molecular (ICMOL), Universitat de València, Polígono de la Coma, s/n, 46980-Paterna
(València), Spain
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Shongwe MS, Al-Rahbi SH, Al-Azani MA, Al-Muharbi AA, Al-Mjeni F, Matoga D, Gismelseed A, Al-Omari IA, Yousif A, Adams H, Morris MJ, Mikuriya M. Coordination versatility of tridentate pyridyl aroylhydrazones towards iron: tracking down the elusive aroylhydrazono-based ferric spin-crossover molecular materials. Dalton Trans 2012; 41:2500-14. [DOI: 10.1039/c1dt11407g] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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11
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Conformational flexibility of 2,6-bis(pyrazol-1-ylmethyl)pyridine (L5) in [(L5)CoII(H2O)3]Cl2 and [(L5)NiII(H2O)2Cl]Cl·H2O. Molecular structures and non-covalent interactions. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.02.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Pandey S, Das PP, Singh AK, Mukherjee R. Cobalt(ii), nickel(ii) and copper(ii) complexes of a hexadentate pyridine amide ligand. Effect of donor atom (ether vs. thioether) on coordination geometry, spin-state of cobalt and MIII–MII redox potential. Dalton Trans 2011; 40:10758-68. [DOI: 10.1039/c1dt10661a] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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The C–H⋯Cl2Cu(II) synthon in the structural direction and assembly of supramolecular complexes with the 3,3′-bis(2-benzimidazolyl)-2,2′-dipyridine ligand and its N-substituted derivatives. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.05.078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Mishra V, Mishra H, Mukherjee R. Generation and Properties of Co
I
/Ni
I
Species Stabilized by a Tetradentate Pyridylpyrazole Ligand: Crystal Structures of Dialkyl‐Co
III
Complexes. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900203] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vibha Mishra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, Fax: +91‐512‐2597437
| | - Haritosh Mishra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, Fax: +91‐512‐2597437
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India, Fax: +91‐512‐2597437
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16
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Mishra H, Mishra V, Varret F, Mukherjee R, Baldé C, Desplanches C, Létard JF. Opposite effects of interactions and disorder on the switching properties of the spin transition compound [FeII(L)2][ClO4]2·C7H8. Polyhedron 2009. [DOI: 10.1016/j.poly.2008.10.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Kuzu I, Krummenacher I, Hewitt I, Lan Y, Mereacre V, Powell AK, Höfer P, Harmer J, Breher F. Syntheses, Structures and Electronic Properties of Zwitterionic Iron(II) and Cobalt(II) Complexes Featuring Ambidentate Tris(pyrazolyl)methanide Ligands. Chemistry 2009; 15:4350-65. [DOI: 10.1002/chem.200802317] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Mishra V, Mishra H, Mukherjee R, Codjovi E, Linarès J, Létard JF, Desplanches C, Baldé C, Enachescu C, Varret F. Spin-transition in [FeII(L5)2][ClO4]2 [L5 = 2-[3-(2′-pyridyl)pyrazol-1-ylmethyl](1-methylimidazole)]: a further example of coexistence of features typical for disorder and cooperativity. Dalton Trans 2009:7462-72. [DOI: 10.1039/b901397k] [Citation(s) in RCA: 15] [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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19
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Białońska A, Bronisz R. Application of N-(ω-bromoalkyl)tetrazoles for the preparation of bitopic ligands containing pyridylazole chelators or azole rings as building blocks for iron(II) spin crossover polymeric materials. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.065] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Mononuclear and binuclear iron(III) complexes incorporating N4O3 coordinating heptadentate ligand: Synthesis, structure and magnetic properties. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.05.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Mishra V, Mukherjee R, Linares J, Balde C, Desplanches C, Létard JF, Collet E, Toupet L, Castro M, Varret F. Temperature-Dependent Interactions and Disorder in the Spin-Transition Compound [FeII(L)2][ClO4]2·C7H8 Through Structural, Calorimetric, Magnetic, Photomagnetic, and Diffuse Reflectance Investigations. Inorg Chem 2008; 47:7577-87. [DOI: 10.1021/ic8002977] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vibha Mishra
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - Rabindranath Mukherjee
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - Jorge Linares
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - Chérif Balde
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - Cédric Desplanches
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - Jean-François Létard
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - Eric Collet
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - Loic Toupet
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - Miguel Castro
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
| | - François Varret
- GEMAC, CNRS—Université de Versailles, 78035 Versailles cedex, France, Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India, ICMCB, CNRS, Université Bordeaux 1, 87, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France, Université de Rennes 1, Institut de Physique de Rennes, UMR UR1-CNRS 6251, Campus Beaulieu, F-35042 Rennes, France, and Instituto de Ciencia de Materiales de Aragon (CSIC-Universidad de Zaragoza)—Pendro Cerbuna 12, 5009 Zaragoza, Spain
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Liu CS, Sun GH, Guo LQ. Dichlorido[1-(1-naphthyl-meth-yl)-3-(2-pyrid-yl)-1H-pyrazole-κN,N]palladium(II). Acta Crystallogr Sect E Struct Rep Online 2007; 64:m69. [PMID: 21200638 PMCID: PMC2914949 DOI: 10.1107/s1600536807062927] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Accepted: 11/24/2007] [Indexed: 11/10/2022]
Abstract
In the title compound, [PdCl(2)(C(19)H(15)N(3))], the Pd(II) centre is four-coordinated by two N-atom donors from one 1-[3-(2-pyrid-yl)pyrazol-1-ylmeth-yl]naphthalene (L) ligand and by two Cl atoms in a distorted square-planar coordination geometry. In the crystal structure, adjacent Pd(II) mononuclear units form inter-molecular C-H⋯π inter-actions involving the benzene and pyridine rings of different L ligands and π-π stacking inter-actions between the pyrazolyl-pyridine and naphthalene rings of neighbouring L ligands, with a centroid-centroid separation of 3.522 (1) Å.
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Shongwe MS, Al-Rashdi BA, Adams H, Morris MJ, Mikuriya M, Hearne GR. Thermally Induced Two-Step, Two-Site Incomplete 6A1 ↔ 2T2 Crossover in a Mononuclear Iron(III) Phenolate−Pyridyl Schiff-Base Complex: A Rare Crystallographic Observation of the Coexistence of Pure S = 5/2 and 1/2 Metal Centers in the Asymmetric Unit. Inorg Chem 2007; 46:9558-68. [DOI: 10.1021/ic700397u] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Musa S. Shongwe
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Muscat, Sultanate of Oman, Department of Chemistry, The University of Sheffield, Sheffield S3 7HF, United Kingdom, Department of Chemistry and Open Research Center for Molecule-Based Devices, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan, and School of Physics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
| | - Badria A. Al-Rashdi
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Muscat, Sultanate of Oman, Department of Chemistry, The University of Sheffield, Sheffield S3 7HF, United Kingdom, Department of Chemistry and Open Research Center for Molecule-Based Devices, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan, and School of Physics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
| | - Harry Adams
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Muscat, Sultanate of Oman, Department of Chemistry, The University of Sheffield, Sheffield S3 7HF, United Kingdom, Department of Chemistry and Open Research Center for Molecule-Based Devices, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan, and School of Physics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
| | - Michael J. Morris
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Muscat, Sultanate of Oman, Department of Chemistry, The University of Sheffield, Sheffield S3 7HF, United Kingdom, Department of Chemistry and Open Research Center for Molecule-Based Devices, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan, and School of Physics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
| | - Masahiro Mikuriya
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Muscat, Sultanate of Oman, Department of Chemistry, The University of Sheffield, Sheffield S3 7HF, United Kingdom, Department of Chemistry and Open Research Center for Molecule-Based Devices, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan, and School of Physics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
| | - Giovanni R. Hearne
- Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Muscat, Sultanate of Oman, Department of Chemistry, The University of Sheffield, Sheffield S3 7HF, United Kingdom, Department of Chemistry and Open Research Center for Molecule-Based Devices, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan, and School of Physics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa
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Leita BA, Neville SM, Halder GJ, Moubaraki B, Kepert CJ, Létard JF, Murray KS. Anion−Solvent Dependence of Bistability in a Family of Meridional N-Donor-Ligand-Containing Iron(II) Spin Crossover Complexes. Inorg Chem 2007; 46:8784-95. [PMID: 17854174 DOI: 10.1021/ic7010919] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Five mononuclear spin crossover iron(II) bis-meridional ligand complexes of the general formula [Fe(L)(2)](X)(2).solvent, have been synthesized, where X = BF(4)- or ClO(4)-; L = 2-(1-pyridin-2-ylmethyl-1H-pyrazol-3-yl)-pyrazine (picpzpz) or 2-(3-(2-pyridyl)pyrazol-1-ylmethyl)pyridine) (picpypz); solvent = MeOH or EtOH. The magnetic and structural consequences of systematic variation of meridional ligand, solvent, and anion, including a desolvated species, have been investigated. The complex [Fe(picpzpz)(2)](BF(4))(2).MeOH, 1.MeOH, displays several unique properties including a two-step spin transition with a gradual higher-temperature step ((1)T(1/2) = 197 K) and an abrupt low-temperature step with hysteresis ((2)T(1/2) = 91/98 K) and a metastable intermediate spin state below 70 K with quench-cooling. Removal of the solvent methanol results in the loss of the abrupt step and associated hysteresis (T(1/2) = 150 K). The complexes [Fe(picpzpz)(2)](BF(4))(2).EtOH (1.EtOH), [Fe(picpzpz)(2)](ClO(4))(2).MeOH (2.MeOH), [Fe(picpzpz)(2)](ClO(4))(2).EtOH (2.EtOH), and [Fe(picpypz)(2)](BF(4))(2).MeOH (3.MeOH) all show gradual one-step spin transitions with T(1/2) values in the range 210-250 K. Photomagnetic LIESST measurements on 1.MeOH reveal a near-quantitative excitation of high-spin sites and a unique two-step relaxation process related to the two-step thermal spin transition ((1)T(LIESST) = 49 K and (2)T(LIESST) = 70 K). The structural consequences of the unusual spin transition displayed by 1.MeOH have been investigated by single-crystal X-ray diffraction structural analyses between 25 and 293 K. Detailed characterization of the unit cell parameter evolution vs temperature reflects both the gradual high-temperature step and abrupt low-temperature step, including the thermal hysteresis, observed magnetically.
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Affiliation(s)
- Ben A Leita
- School of Chemistry, Building 23, Monash University, Clayton, Victoria 3800, Australia
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25
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Halcrow MA. The spin-states and spin-transitions of mononuclear iron(II) complexes of nitrogen-donor ligands. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.03.033] [Citation(s) in RCA: 270] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Prushan MJ, Tomezsko DM, Lofland S, Zeller M, Hunter AD. A nickel(II) di-μ2-phenolato bridged dinuclear complex: Weak antiferromagnetic interactions in nickel(II) dimers. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.11.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mishra V, Lloret F, Mukherjee R. Bis-μ-pyrazolate-Bridged Dinickel(II) and Dicopper(II) Complexes: An Example of Stereoelectronic Preference of Metal Ions and Stabilization of Mixed-Valence NiIIINiII Species. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700004] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mishra V, Lloret F, Mukherjee R. Coordination versatility of 1,3-bis[3-(2-pyridyl)pyrazol-1-yl]propane: Co(II) and Ni(II) complexes. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2006.05.005] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Balamurugan V, Jacob W, Mukherjee J, Mukherjee R. Designing neutral coordination networks using inorganic supramolecular synthons: Combination of coordination chemistry and C–H⋯Cl hydrogen bonding. CrystEngComm 2004. [DOI: 10.1039/b406744b] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nakano K, Suemura N, Kawata S, Fuyuhiro A, Yagi T, Nasu S, Morimoto S, Kaizaki S. Magnetic behavior and Mössbauer spectra of spin-crossover pyrazolate bridged dinuclear diiron(ii) complexes: X-ray structures of high-spin and low-spin [{Fe(NCBH3)(py)}2(μ-bpypz)2]. Dalton Trans 2004:982-8. [PMID: 15252676 DOI: 10.1039/b314211f] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and characterization of new spin-crossover pyrazolato bridged dinuclear [(FeII(NCS)(py))2(mu-bpypz)2] and the corresponding cyanotrihydroborato-kappaN complexes are described together with the X-ray crystal analysis of the latter in both the high-spin and low-spin states as well as the variable temperature magnetic susceptibility and/or Mossbauer spectra demonstrating the spin-crossover which exhibits an one-step process, but not a two-step one characteristic of the known bpym bridged dinuclear complexes.
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Affiliation(s)
- Keisaku Nakano
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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