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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A series of cobalt and nickel clusters based on thiol-containing ligands accompanied by in situ ligand formation
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A series of cobalt and nickel clusters based on thiol-containing ligands accompanied by in situ ligand formation

机译:基于含硫醇配体的一系列钴和镍簇簇伴随原位配体形成

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摘要

Eight cobalt and nickel clusters with the formulae [Co-4(mu(4)-O)(MBT)(5)(mu(2)-Piv)] (1), [Ni-3(MBT)(2)(L1)(2)(OCH3)(2)] (2), [Ni-4(mu(3)-S)(mu(3)-S-2)(MBT)(2)(L2)] (3), [Ni-4(L-3)(4)] (4), [Ni-6(mu(4)-S)(3)(MBT)(6)]center dot(C2H5OH)(2) (5), H[Co-4(mu(4)-O) (HMBI)(6)]center dot(NO3)(TEA)(0.5)(CH3OH)(2)(H2O) (6), [Ni-2(HMBI)(4)]center dot(CH3OH)(2) (7), and [Ni-5(MBI)(2)(HMBI)(4)(OCH3)(2)]center dot(CH3OH)(3)(H2O)(2) (8) (HPiv = pivalic acid, HL1 = 2-disulfanylbenzo[d] thiazole, H(2)L2 = (Z)-2-((2-mercaptophenyl) imino) benzo[d] thiazole-3(2H)-thiol, H(2)L3 = (Z)-2-(benzo[d] thiazol-2(3H)-ylideneamino) benzenethiol, TEA = triethylamine) have been solvothermally prepared via assembling distinct metal resource and thiol-containing ligands 2-mercaptobenzothiazole (HMBT)/2-mercaptobenzimidazole (H2MBI). Complexes 1 and 6 are tetrahedral cobalt clusters. Complex 2 features linear arrangement of nickel ions. Complexes 3 and 4 are tetranuclear nickel clusters with the butterfly and square shape, respectively. Complex 5 displays a trigonal prism geometry. Complexes 7 and 8 exhibit paddle-wheel and trigonal bipyramidal geometry, respectively. The starting ligand HMBT undergoes in situ ligand transformation in the formation of the nickel clusters, and the new generated inorganic ligands (S2- and S-2(2-)) and organic ligands (HL1, H(2)L2 and H(2)L3) were captured within the metallic cores. Magnetic studies indicate that complexes 1 and 6 show dominating antiferromagnetic couplings and that spin frustration exists in 6.
机译:八个钴和镍簇,其分子式为[Co-4(mu(4)-O)(MBT)(5)(mu(2)-Piv)](1),[Ni-3(MBT)(2)( L1)(2)(OCH3)(2)](2),[Ni-4(mu(3)-S)(mu(3)-S-2)(MBT)(2)(L2)](3 ),[Ni-4(L-3)(4)](4),[Ni-6(mu(4)-S)(3)(MBT)(6)]中心点(C2H5OH)(2)( 5),H [Co-4(mu(4)-O)(HMBI)(6)]中心点(NO3)(TEA)(0.5)(CH3OH)(2)(H2O)(6),[Ni- 2(HMBI)(4)]中心点(CH3OH)(2)(7)和[Ni-5(MBI)(2)(HMBI)(4)(OCH3)(2)]中心点(CH3OH)( 3)(H2O)(2)(8)(HPiv =新戊酸,HL1 = 2-二硫烷基苯并[d]噻唑,H(2)L2 =(Z)-2-((2-巯基苯基)亚氨基)苯并[d ]噻唑-3(2H)-硫醇,H(2)L3 =(Z)-2-(苯并[d]噻唑-2(3H)-亚氨基氨基)苯硫醇,TEA =三乙胺)是通过组装不同的金属进行溶剂热制备的资源和含硫醇的配体2-巯基苯并噻唑(HMBT)/ 2-巯基苯并咪唑(H2MBI)。配合物1和6是四面体钴簇。配合物2具有镍离子的线性排列。配合物3和4分别是蝶形和方形的四核镍簇。配合物5显示三角棱镜的几何形状。配合物7和8分别表现出桨轮和三角双锥体几何形状。起始配体HMBT在镍团簇的形成中进行原位配体转化,新生成的无机配体(S2-和S-2(2-))和有机配体(HL1,H(2)L2和H(2 )L3)被捕获在金属芯内。磁性研究表明,配合物1和6显示出主要的反铁磁耦合,并且自旋失意存在于6中。

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