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    Title: Syntheses, structures, and magnetic properties of dicyanamide bridged one-dimensional double chain and discrete dinuclear complexes of manganese(II) derived from 6,7-dimethyl-2,3-di(2-pyridyl)quinoxaline or 2,4,6-tri(2-pyridyl)-1,3,5-triazine
    Authors: 魏和祥;Wei, Ho-hsiang;Hsu, G.Y.;Misra, P.;Cheng, Sheng-Chuan;Mohanta, Sasankasekhar
    Contributors: 淡江大學化學學系
    Keywords: Dicyanamide;Magnetic properties;One-dimensional;Double chain;Dinuclear;Manganese(II)
    Date: 2006-12-04
    Issue Date: 2009-12-01
    Publisher: Elsevier
    Abstract: Syntheses, structures, and magnetic properties of two dicyanamide (dca) bridged compounds of manganese(II), [MnII(DMeDPQ)(μ1,5-dca)2]n (1) and View the MathML source[Mn2II(TPT)2(μ1,5-dca)2(H2O)2](ClO4)2(2), have been described (DMeDPQ = 6,7-dimethyl-2,3-di(2-pyridyl)quinoxaline; TPT = 2,4,6-tri(2-pyridyl)-1,3,5-triazine). While 2 is a discrete dinuclear compound, the structure of 1 is polymeric and consists of one-dimensional double chains. DMeDPQ and TPT behave here as bidentate and tridentate chelating ligands, respectively. The one-dimensional double chain structure in 1 is formed due to the dual existence of two single and two double end to end (μ1,5-, EE) dca ligands. In the case of 2, the metal centers are bridged by two double EE dca ligands. The variable-temperature magnetic susceptibility measurements of both compounds reveal that dicyanamide mediates a weak antiferromagnetic interaction between the metal centers.
    Relation: Polyhedron 25(17), pp.3393-3398
    DOI: 10.1016/j.poly.2006.06.019
    Appears in Collections:[化學學系暨研究所] 期刊論文

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