Hydrothermal syntheses, structures and characterizations of two luminescent cadmium(II) complexes with p-xylenediphosphonic acid and N-donor ligands
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- 作者：Yan-Qiong Sun ; sunyq@fzu.edu.cn ; Jin Hu ; Han-Hui Zhang ; Yi-Ping Chen
- 关键词：Hydrothermal synthesis ; Cadmium diphosphonate ; Structure ; Second ligand
- 刊名：Journal of Solid State Chemistry
- 出版年：2012
- 出版时间：February 2012
- 年：2012
- 卷：186
- 期：Complete
- 页码：189-194
- 全文大小：1309 K
文摘
Two novel cadmium diphosphonates [Cd(cis-H4BDPP)(2,2?bipy)2]¡¤(trans-H2BDPP)]n (1) and [Cd(trans-H2BDPP)(phen)]n (2) (H4BDPP=p-xylenediphosphonic acid, phen=1,10-phenanthroline, 2,2?bipy=2,2?bipyridine) were hydrothermally synthesized from p-xylenediphosphonic acid and CdSO4¡¤3H2O with phen or 2,2?bipy as second ligand components and characterized by means of elemental analyses, IR, TG analysis, luminescence spectroscopy and single crystal X-ray diffraction. Compound 1 consists of a novel one-dimensional (1D) sinusoidal [Cd(cis-H4BDPP)(2,2?bipy)2] chains and trans-H2BDPP anions. Compound 2 possesses a three-dimensional architecture built from double zigzag -Cd-O-P-O-Cd- chains pillared by trans-p-xylylenediphosphonate ligands from four different directions. There are hexagonal channels running along the c-axis and the coordinated phen ligands suspend in the hexagonal channels. The results indicate that p-xylenediphosphonic acid can adopt varied coordination modes and conformations in the formation of the complexes and the influence of the N-donor ligands on the structure of the complexes is discussed.