Assembly of Layer-Type Organosilver(I) Complexes Incorporating Nitrate and Isomeric Halophenylethynide Ligands
摘要:
对一系列 10 个硝酸银(i)配合物进行了单晶 X 射线分析,这些配合物含有富碳配体,每个配体都由一个卤代苯基核组成,在不同位置上带有一个末端乙炔基,分析结果详细说明了配体排列和取向、配位偏好以及银(i)-乙炔和银(i)-卤素相互作用在配位网络构建过程中的影响,配位网络由亲精作用和微弱的分子内或分子间相互作用加以巩固。
Investigating Direct Alkynylation at the Bridgehead of Bicyclic Cages Using Silver(I) Acetylides
作者:Rebecca H. Pouwer、Jason B. Harper、Kamesh Vyakaranam、Josef Michl、Craig M. Williams、Carsten H. Jessen、Paul V. Bernhardt
DOI:10.1002/ejoc.200600701
日期:2007.1
Silver(I) acetylides facilitate direct carbon-carbon bond formation at the bridgehead position of adamantane, and in some instances related systems such as carborate anions and bicyclo [2.2.2]octanes. Substrate constraints along with attempts to further understand the underlying mechanism are presented. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007).
Coordination networks constructed with supramolecular synthon RX–CC⊃Agn (n=4, 5; RX=halophenyl)
作者:Siegfried M.J. Wang、Thomas C.W. Mak
DOI:10.1016/j.poly.2009.05.004
日期:2009.9
Eight new silver(l) double salts: AgL1 center dot 2AgCF(3)COO (1), AgL1 center dot 3AgNO(3) (2), 2AgL(2)center dot 5AgCF(3)COO center dot 2CH(3)CN center dot H2O (3), 4AgL(3)center dot 6AgCF(3)COO center dot 5CH(3)CN (4), 4AgL(4)center dot 6AgCF(3)COO center dot 5CH(3)CN (5), 2AgL(S)center dot 4AgCF(3)COO center dot NC(CH2)(4)CN (6), 2AgL(5)center dot 4AgCF(3)COO center dot 2CH(3)CN (7) and AgL6 center dot 2CF(2)(CF2COOAg)(2)center dot 2CH(3)CN (8) (L-1 =4-iodophenylethynide; L-2 = 3,4-dichlorophenylethynide; L-3 = 3-chlorophenylethynide; L-4 = 3-bromophenylethynide; L-5 = 2-chlorophenylethynide; L-6 = 2-fluorophenylethynide) have been synthesised and characterized by X-ray crystallography. All compounds contain the silver-halophenylethynide supramolecular synthon R-X-C C superset of Ag-n (n = 4, 5). In particular, the three-dimensional supramolecular structures in 1 and 2 are stabilized by strong Ag center dot center dot center dot l interactions, while that in 3 is consolidated by both Ag center dot center dot center dot Cl and van der Waals type F center dot center dot center dot Cl interactions. In isomorphous compounds 4 and 5, the presence of respective F center dot center dot center dot Cl or F center dot center dot center dot Br contact contributes to the stability of the network. The silver aggregates in 6, 7 and 8 are stabilized by Ag center dot center dot center dot Cl or Ag center dot center dot center dot F interactions between the ortho-halo substituent and the Ag. basket. (C) 2009 Elsevier Ltd. All rights reserved.