Controllable spontaneous resolution in ultrasmall Cu–Ag bimetallic cluster ion pairs from achiral components
作者:Jiao He、Cheng-Long Deng、Cun-Fa Sun、Xiao-Xiao Zhang、Ying Cui、Sheng-Hui Wu、Geng-Geng Luo
DOI:10.1039/d1cc05135k
日期:——
ion pairs containing a quaternary phosphonium and an ultrasmall Cu2Ag3 anionic cluster protected by thiolates: (PPh3R′′)[Cu2Ag3(SR′)6] (R′SH = cyclohexylthiol (CySH), R′′ = Ph, 1; Me, 2; Et, 3; Pr, 4; R′SH = tert-butylthiol (tBuSH) and R′′ = Ph, 5) were reported. Without any chiral source, 1 crystallizes as conglomerate crystals with homochiral packings and spontaneous resolution occurs, while four other
含有季鏻和受硫醇盐保护的超小 Cu 2 Ag 3阴离子簇的双金属簇离子对:(PPh 3 R'')[Cu 2 Ag 3 (SR') 6 ] (R'SH = cyclohexylthiol (CySH), R '' = Ph, 1 ; Me, 2 ; Et, 3 ; Pr, 4; R'SH =叔丁基硫醇 ( t BuSH) 和 R'' = Ph, 5 )。在没有任何手性源的情况下,1结晶为具有纯手性填料的团块晶体并发生自发分离,而其他四个簇2-5结晶为具有异手性填料的外消旋晶体。这些结果表明,可以通过微调内部非手性结构组分来控制簇体系中的外消旋和纯手性结晶。