کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1340447 | 979735 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: 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 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](/preview/png/1340447.png)
Syntheses, structures, and magnetic properties of two dicyanamide (dca) bridged compounds of manganese(II), [MnII(DMeDPQ)(μ1,5-dca)2]n (1) and [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.
Syntheses, structures, and variable-temperature magnetic studies of a dicyanamide (dca) bridged one-dimensional double chain compound, [MnII(DMeDPQ)(μ1,5-dca)2]n, and a discrete dinuclear complex, [Mn2II(TPT)2(μ1,5-dca)2(H2O)2](ClO4)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).Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 25, Issue 17, 4 December 2006, Pages 3393–3398