کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1407340 | 1501903 | 2007 | 7 صفحه PDF | دانلود رایگان |
Two isostructural novel coordination polymers M2(tdc)2(H2O)3 (H2tdc = thiophene-2,5-dicarboxylic acid, M = Co 1 and Mn 2) have been hydrothermally synthesized and characterized by elemental analyses, IR and X-ray powder diffraction. Compound 1 has been characterized by single-crystal X-ray diffraction and it crystallizes in the monoclinic system, space group C2/c, a = 19.74(3) Å, b = 7.506(11) Å, c = 10.750(16) Å, β = 103.65(2)°, V = 1548(4) Å3, Z = 4, and R1(wR2) = 0.0546 (0.1175). In compound 1, thiophene-2,5-dicarboxylic dianions exhibit a uniform inequivalent tetradentate coordination mode and cross-link one dimensional Co⋯Co⋯Co pseudochains to form a novel three dimensional framework. Compound 1 exhibits good photoluminescence property, whereas compound 2 is nonemissive at room temperature.
Journal: Journal of Molecular Structure - Volume 833, Issues 1–3, 15 May 2007, Pages 1–7