Anion-Dependent Silver(I) Coordination Polymers of the Tridentate Pyridylphosphonite: PPh(3-OCH2C5H4N)2

详细信息    查看全文

• 作者：Rodney P. Feazell ; Cody E. Carson ; and Kevin K. Klausmeyer
• 刊名：Inorganic Chemistry
• 出版年：2005
• 出版时间：February 21, 2005
• 年：2005
• 卷：44
• 期：4
• 页码：996 - 1005
• 全文大小：337K
• 年卷期：v.44,no.4(February 21, 2005)
• ISSN：1520-510X

文摘

Three new multidimensional coordination polymers have been constructed from the reaction of AgX, where X =OTf^-, BF₄^-, or tfa^-, with the novel phosphonite PhP(3-OCH₂C₅H₄N)₂, PCP-32, 1. It is seen that regardless of theratio of reactants mixed, polymeric growth of the compounds always reveals a ligand-to-metal ratio of 1:2 forPCP-32AgOTf, 2, 1:1 for PCP-32AgBF₄, 3, and 1:2 for PCP-32Ag(tfa), 4. The coordination number, metalenvironment, ligand conformation, and polymer dimensionality are found to vary greatly from 2 to 4 and are dependentupon the anion present. Coordination numbers from 2 to 4, representing linear, trigonal, and distorted tetrahedralenvironments are displayed. PCP-32AgOTf polymerizes as a linear chain containing both two- and four-coordinatesilvers, PCP-32AgBF₄ repeats a single trigonal motif throughout its structure, and PCP-32Ag(tfa) shows two uniquedistorted tetrahedral silver centers. Ligand flexibility allows for cross-ligand Ag-Ag distances to range from 3.1918(8) to 14.015(2) Å. The coordination polymers have been characterized by elemental analysis, variable-temperaturemultinuclear NMR spectroscopy, single-crystal X-ray diffraction, and fluorometric studies.