一种具有混合青霉胺和双（二苯基膦基）乙烷的Au(I)₄Co(III)₂六核配合物的D4、L4和D2L2异构体的手性混乱和独立结晶

Chiral scrambling and independent crystallization of D4, L4, and D2L2 isomers of an Au(I)4Co(III)2 hexanuclear complex with mixed penicillaminate and bis(diphenylphosphino)ethane.

作者信息

Yoshinari Nobuto, Li Chan, Lee Raeeun, Kuwamura Naoto, Igashira-Kamiyama Asako, Konno Takumi

机构信息

Department of Chrmistry, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan.

CREST, Japan Science and Technology Agency , Toyonaka, Osaka 560-0043, Japan.

出版信息

Inorg Chem. 2015 Sep 21;54(18):8881-3. doi: 10.1021/acs.inorgchem.5b01549. Epub 2015 Aug 31.

DOI:10.1021/acs.inorgchem.5b01549

PMID:26322375

Abstract

The 1:1 mixing of a pair of enantiomers of a cyclic Au(I)4Co(III)2 hexanuclear complex having penicillaminate (pen) and 1,2-bis(diphenylphosphino)ethane (dppe), Au4Co2(dppe)2(d-pen)4 (d4-1) and Au4Co2(dppe)2(l-pen)4 (l4-1), in solution produced an additional stereoisomer, Au4Co2(dppe)2(d-pen)2(l-pen)2 (d2l2-1), because of the scrambling of Co(d-pen)2 and Co(l-pen)2 units between d4-1 and l4-1. Upon crystallization with NO3(-), the three stereoisomers were independently crystallized to form three different kinds of crystals, homochiral crystals of d4-12, homochiral crystals of l4-12, and heterochiral crystals of d2l2-12, showing a unique example of the self-recognition and organization of three stereoisomers upon crystallization.

摘要

具有青霉胺（pen）和1,2-双（二苯基膦基）乙烷（dppe）的环状Au(I)4Co(III)2六核配合物的一对对映体Au4Co2(dppe)2(d - pen)4（d4-1）和Au4Co2(dppe)2(l - pen)4（l4-1）在溶液中1:1混合时，由于Co(d - pen)2和Co(l - pen)2单元在d4-1和l4-1之间的交换，产生了一种额外的立体异构体Au4Co2(dppe)2(d - pen)2(l - pen)2（d2l2-1）。在用NO3(-)结晶时，这三种立体异构体分别结晶形成三种不同类型的晶体，即d4-12的纯手性晶体、l4-12的纯手性晶体和d2l2-12的杂手性晶体，展示了结晶时三种立体异构体自我识别和组装的独特例子。