首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Silver(I) Double and Multiple Salts Containing the 1,3‐Butadiynediide Dianion: Coordination Diversity and Assembly with the Supramolecular Synthon Ag4⊂CC?CC⊃Ag4
Authors:Liang Zhao  Miao Du Prof Dr  Thomas C W Mak Prof Dr
Institution:1. Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China, Fax: (+852)?260‐3‐5057;2. College of Chemistry and Life Science, Tianjin Normal University, Tianjin, China
Abstract:A series of 13 silver(I) double and multiple salts containing 1,3‐butadiynediide, C42?, were synthesized by dissolving the silver carbide Ag2C4 in a concentrated aqueous solution of one or more of the silver salts AgNO3, AgCF3CO2, AgC2F5CO2, AgF, AgBF4, and AgPF6. The 1,3‐butadiynediide anion invariably adopts a μ44 coordination mode in these compounds, which indicates that the Ag4?C?C? C?C?Ag4 moiety can be used as a new type of metalloligand supramolecular synthon for the construction of coordination networks. Fine‐tuning with various ancillary anionic ligands caused the Ag4 aggregate at each ethynide terminus to adopt a butterfly‐shaped, planar, or barblike configuration, within which the silver–ethynide interactions can be classified into three types: σ, π, and mixed (σ,π). The effect of coexisting nitrile ligands and quaternary ammonium salts on supramolecular assembly with the above synthon was also explored. The hydrolysis of PF6? and BF4? led to the formation of the quadruple salt Ag2C4?4 AgNO3?AgPF2O2?Ag3PO4 and a novel (F)2(H2O)18 hydrogen‐bonded tape in the triple salt Ag2C4?2 AgF? 10 AgC2F5CO2?CH3CN?12 H2O, respectively. The largest silver–ethynide cluster aggregate described to date, (C4)3@Ag18, occurs in 3 Ag2C4? 12 AgC2F5CO2?5(BnMe3N)C2F5CO2]? 4 H2O (Bn=benzyl).
Keywords:argentophilicity  carbides  coordination modes  silver  supramolecular synthons
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号