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Adebayo OA, Abboud KA, Christou G. New mixed-valence MnII4MnIV clusters from an unusual ligand transformation. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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2
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Tsao JY, Tsai JD, Yang CI. Azide-bridged Cu(ii), Mn(ii) and Co(ii) coordination polymers constructed with a bifunctional ligand of 6-(1H-tetrazol-5-yl)-2,2′-bipyridine. Dalton Trans 2016; 45:3388-97. [DOI: 10.1039/c5dt04773k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new azide-bridged coordination polymers, [M(N3)(tzbp)]n (M = Cu, 1·Cu; Mn, 2·Mn; Co, 3·Co), were successfully prepared by introducing a bifunctional tetrazolate/2,2′-bipyridine ligand, 6-(1H-tetrazol-5-yl)-2,2′-bipyridine (Htzbp).
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Affiliation(s)
- Jung-Yu Tsao
- Department of Chemistry
- Tunghai University
- Taichung 407
- Taiwan
| | - Jia-Dong Tsai
- Department of Chemistry
- Tunghai University
- Taichung 407
- Taiwan
| | - Chen-I. Yang
- Department of Chemistry
- Tunghai University
- Taichung 407
- Taiwan
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Yang H, Cao F, Li D, Zeng S, Song Y, Dou J. Solvent dependent reactivities of di-, tetra- and hexanuclear manganese complexes: syntheses, structures and magnetic properties. Dalton Trans 2015; 44:6620-9. [PMID: 25758136 DOI: 10.1039/c4dt03822c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unusual solvent effect on the synthesis of five manganese complexes [Mn2(L1)2(Py)4](), [Mn2(L1)2(DMSO)4](), [Mn4(L2)4(OH)4](), [Mn4(L3)2(DMSO)7(H2O)](), and [Mn6O2(L4)4(OAc)2(OMe)2(DMSO)4]·MeOH] (), (H3L1 = 5-(2-oxyphenyl)-pyrazole-3-carboxylic acid; H2L2 = 5-(2-oxyphenyl)-pyrazole-3-carboxylic acid amide; H4L3 = di-[5-(2-oxyphenyl)-pyrazole]-3-hydroxamic ether; and H2L4 = 5-(2-oxyphenyl)-pyrazole-3-carboxylic acid methyl ester) has been reported. Five complexes have been characterized by X-ray single crystal diffraction, IR, element analysis, thermogravimetric analysis and UV-vis spectra. The analysis reveals that complexes and are isostructural with a bimetallic six-membered ring and L1 from the decomposition of the original H4ppha (H4ppha = 5-(2-hydroxyphenyl)-pyrazole-3-hydroxamic acid) ligand. Complexes and are two tetranuclear clusters, and possesses an aza12-metallacrown-4 core with L2 from the amide functionalization of the decomposition L1; while represents a novel linear [Mn4N8O2] core with L3 from the condensation of L1 and H4ppha. Complex is the first Mn6 cluster linked by two stacked, off-set 8-azametallacrown-3 subunits with [M-N-N-M-N-N-M-O] connectivity, and L4 derived from the esterification of L1. The magnetic behaviour of complexes show the dominant antiferromagnetic interactions between metal centers, whereas complex further reveals the coexistence of antiferromagnetic and ferromagnetic interactions, and slow magnetic relaxation at T < 6 K with S = 4 ground state, as well as field induced magnetization saturation.
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Affiliation(s)
- Hua Yang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, 252059 Liaocheng, People's Republic of China.
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Alcazar L, Font‐Bardia M, Escuer A. A Mn
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Cluster inside a Mn
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Wheel: Characterization of a Mn
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‐Oximate Complex Resulting from a Tetrazole‐2‐pyridylketoneoximate Ligand. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Laura Alcazar
- Departament de Química Inorgànica, Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona, Spain, http://www.ub.edu/inorgani/recerca/MagMol/magmol.htm
| | - Mercè Font‐Bardia
- Department de Cristallografia, Mineralogia i Dipòsits, Universitat de Barcelona, Martí Franquès s/n, 08028 Barcelona, Spain
| | - Albert Escuer
- Departament de Química Inorgànica, Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona, Spain, http://www.ub.edu/inorgani/recerca/MagMol/magmol.htm
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Yang H, Yao QX, Li YW, Li DC, Dou JM. 22-Azametallacrown-8 complex with a triazole-bridged ligand: synthesis, structure and magnetic properties. Dalton Trans 2014; 43:16986-91. [PMID: 25315719 DOI: 10.1039/c4dt02722a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction of Mn(OAc)2·4H2O with the H2L ligand affords a new manganese 22-MC-8 azametallacrown [Mn8(μ3-O)2(μ3-OH)2(μ2-OH)2(L)6(OAc)2(OH2)4]·2DMF (H2L = 3-(2-oxyphenyl)-5-(pyrazin-2-yl)-1,2,4-triazole). The structural analysis of the complex reveals that the azaMC ring possesses -[Mn-O-Mn-N-N-Mn-N-N-Mn-N-N]- connectivity. The magnetic behavior of the complex shows the dominant antiferromagnetic interactions between the manganese ions with S = 4 and the frequency-dependent out-of-phase signal.
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Affiliation(s)
- Hua Yang
- School of Chemistry and Chemical Engineering, and Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252000, P. R. China.
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Hossain S, Das S, Chakraborty A, Lloret F, Cano J, Pardo E, Chandrasekhar V. S-shaped decanuclear heterometallic [Ni8Ln2] complexes [Ln(iii) = Gd, Tb, Dy and Ho]: theoretical modeling of the magnetic properties of the gadolinium analogue. Dalton Trans 2014; 43:10164-74. [DOI: 10.1039/c4dt00465e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
S-shaped [Ni8Ln2] complexes were synthesized and characterized. Strong NiII–NiII antiferromagnetic interactions and weak NiII–LnIII interactions were observed.
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Affiliation(s)
- Sakiat Hossain
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur-208016, India
| | - Sourav Das
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur-208016, India
| | - Amit Chakraborty
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur-208016, India
| | - Francesc Lloret
- Departament de Química Inorgànica
- Instituto de Ciencia Molecular (ICMOL)
- Universitat de València
- 46980 Paterna, Spain
| | - Joan Cano
- Departament de Química Inorgànica
- Instituto de Ciencia Molecular (ICMOL)
- Universitat de València
- 46980 Paterna, Spain
| | - Emilio Pardo
- Departament de Química Inorgànica
- Instituto de Ciencia Molecular (ICMOL)
- Universitat de València
- 46980 Paterna, Spain
| | - Vadapalli Chandrasekhar
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur-208016, India
- National Institute of Science Education and Research
- Institute of Physics Campus
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Liu D, Sui Y, Wang T, Huang C, Chen J, You X. Two isomorphous Mn(ii) and Co(ii) 5-amino-tetrazolate coordination polymers with magnetic Δ-chains: crystal structures and magnetic properties. Dalton Trans 2012; 41:5301-6. [DOI: 10.1039/c2dt12495e] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Escuer A, Esteban J, Roubeau O. Ni5, Ni8, and Ni10 Clusters with 2,6-Diacetylpyridine-dioxime as a Ligand. Inorg Chem 2011; 50:8893-901. [DOI: 10.1021/ic200895q] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Albert Escuer
- Departament de Química Inorgànica and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Jordi Esteban
- Departament de Química Inorgànica and Institut de Nanociència i Nanotecnologia de la Universitat de Barcelona (IN2UB), Martí i Franqués 1-11, 08028 Barcelona, Spain
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC and Universidad de Zaragoza, Departamento de Física de la Materia Condensada, Pedro Cerbuna 12, 50009 Zaragoza, Spain
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Escuer A, Vlahopoulou G, Perlepes SP, Mautner FA. Trinuclear, Tetranuclear, and Polymeric CuII Complexes from the First Use of 2-Pyridylcyanoxime in Transition Metal Chemistry: Synthetic, Structural, and Magnetic Studies. Inorg Chem 2011; 50:2468-78. [DOI: 10.1021/ic102286r] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Albert Escuer
- Departament de Química Inorgànica and Institut de Nanociència i Nanotecnologia, Universitat de Barcelona (IN2UB), Martí I Franqués 1-11, 08028-Barcelona, Spain
| | - Gina Vlahopoulou
- Departament de Química Inorgànica and Institut de Nanociència i Nanotecnologia, Universitat de Barcelona (IN2UB), Martí I Franqués 1-11, 08028-Barcelona, Spain
- Department of Chemistry, University of Patras, 265 04 Patras, Greece
| | | | - Franz A. Mautner
- Institut für Physikalische und Theoretische Chemie, Technische Universität Graz, A-8010 Graz, Austria
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Escuer A, Vlahopoulou G, Perlepes SP, Font-Bardia M, Calvet T. Dinuclear, tetranuclear and polymeric complexes in copper(ii) perchlorate/pyridine-2,6-diamidoxime chemistry: synthetic, structural and magnetic studies. Dalton Trans 2011; 40:225-33. [DOI: 10.1039/c0dt00720j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Papatriantafyllopoulou C, Stamatatos TC, Wernsdorfer W, Teat SJ, Tasiopoulos AJ, Escuer A, Perlepes SP. Combining azide, carboxylate, and 2-pyridyloximate ligands in transition-metal chemistry: ferromagnetic Ni(II)5 clusters with a bowtie skeleton. Inorg Chem 2010; 49:10486-96. [PMID: 20964448 DOI: 10.1021/ic1014829] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The combined use of the anion of phenyl(2-pyridyl)ketone oxime (ppko(-)) and azides (N(3)(-)) in nickel(II) carboxylate chemistry has afforded two new Ni(II)(5) clusters, [Ni(5)(O(2)CR')(2)(N(3))(4)(ppko)(4)(MeOH)(4)] [R' = H (1), Me (2)]. The structurally unprecedented {Ni(5)(μ-N(3))(2)(μ(3)-N(3))(2)}(6+) cores of the two clusters are almost identical and contain the five Ni(II) atoms in a bowtie topology. Two N(3)(-) ions are end-on doubly bridging and the other two ions end-on triply bridging. The end-on μ(3)-N(3)(-) groups link the central Ni(II) atoms with the two peripheral metal ions on either side of the molecule, while the Ni···Ni bases of the triangles are each bridged by one end-on μ-N(3)(-) group. Variable-temperature, solid-state direct- (dc) and alternating-current (ac) magnetic susceptibility, and magnetization studies at 2.0 K were carried out on both complexes. The data indicate an overall ferromagnetic behavior and an S = 5 ground state for both compounds. The ac susceptibility studies on 1 reveal nonzero, frequency-dependent out-of-phase (χ(M)") signals at temperatures below ~3.5 K; complex 2 reveals no χ(M)" signals. However, single-crystal magnetization versus dc field scans at variable temperatures and variable sweep rates down to 0.04 K on 1 reveal no noticeable hysteresis loops, except very minor ones at 0.04 K assignable to weak intermolecular interactions propagated by nonclassical hydrogen bonds.
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Escuer A, Cordero B, Font-Bardia M, Calvet T. Anionic Tuning of the Dimensionality in Copper Oximato Chemistry. Inorg Chem 2010; 49:9752-4. [PMID: 20873760 DOI: 10.1021/ic101636r] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Albert Escuer
- Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franqués 1−11, Barcelona 08028, Spain
| | - Beatriz Cordero
- Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franqués 1−11, Barcelona 08028, Spain
| | - Mercè Font-Bardia
- Departament de Crystallografia i Mineralogia, Universitat de Barcelona, Martí i Franqués s/n, Barcelona 08028, Spain
| | - Teresa Calvet
- Departament de Crystallografia i Mineralogia, Universitat de Barcelona, Martí i Franqués s/n, Barcelona 08028, Spain
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