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weichao123

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真强必胜: 金币+1, 谢谢 2014-11-29 10:42:10
转身丶忘不掉: 金币+20, 翻译EPI+1, ★★★★★最佳答案 2014-12-09 10:34:33
Crystal structure in the cell, the center metal Pb (II) ion and 5 - bromine nicotinic acid groups on the O atom and adjacent hello Lin on the N atom ligand, molecular complexes by on carboxyl ligand O atoms and neighboring molecules in a 5 - bromine niacin Br occurred on a pair of halogen key Br...O role in direction b on one-dimensional supramolecular chain.Complexes between molecular chain by C - H...O weak hydrogen bonds and van der Waals force built into three-dimensional frame structure.And the structure of complexes are ir, XRD powder diffraction characterization.
2楼2014-11-25 15:35:11
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