Synthesis of gold(<scp>i</scp>) fluoroalkyl and fluoroalkenyl-substituted phosphine complexes and factors affecting their crystal packing
作者:Nicholas A. Barnes、Alan K. Brisdon、F. R. William Brown、Wendy I. Cross、Ian R. Crossley、Cheryl Fish、Christopher J. Herbert、Robin G. Pritchard、John E. Warren
DOI:10.1039/c0dt01014f
日期:——
A series of gold(I) phosphine complexes of the type [AuClPR2(Rf)}] (R = Et, i-Pr, Cy; Rf = CFCF2; R = Ph, Rf = CFCFH, CClCF2, CCCF3, CF3, i-C3F7, s-C4F9) have been prepared and most have been structurally characterised. All of the complexes are monomeric in the solid state, and a number of secondary interactions are observed – including short intramolecular Au⋯F distances, metal-bound Au–Cl⋯H non-classical hydrogen bonds, fluorous domains and phenyl embraces. Only in the case of [AuClPEt2(CFCF2)}] is an aurophilic interaction with an Au⋯Au contact less than the sum of the van der Waals radii observed. Even then, the distance, 3.3458(10) Å, is longer than that previously observed for the related complex with R = Ph; Rf = CFCF2.
我们制备了一系列[AuClPR2(Rf)}]类型的金(I)膦配合物(R = Et、i-Pr、Cy;Rf = CFCF2;R = Ph,Rf = CFCFH、CClCF2、CCCF3、CF3、i-C3F7、s-C4F9),并对大多数配合物进行了结构表征。所有的配合物在固态下都是单体,并观察到许多次级相互作用--包括分子内 Au⋯F 短距离、金属结合的 Au-Cl⋯H 非经典氢键、流态结构域和苯基环抱。只有在[AuClPEt2(CFCF2)}]的情况下,才观察到亲水作用与 Au⋯Au 接触的距离小于范德华半径之和。即便如此,3.3458(10) Å 的距离也比之前在 R = Ph; Rf = CFCF2 的相关复合物中观察到的距离要长。