Why does spontaneous resolution take place? (Empirical force-field calculations)

被引:0
|
作者
Nakajima, M
Konno, T
Yoshikawa, Y [1 ]
机构
[1] Okayama Univ, Grad Sch Nat Sci & Technol, Div Mol Sci, Dept Fundamental Mat Sci, Okayama 7008530, Japan
[2] Osaka Univ, Grad Sch Sci, Dept Chem, Toyonaka, Osaka 5600043, Japan
关键词
spontaneous crystallization; calculations; absolute configurations;
D O I
10.1080/00958970410001691848
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Empirical force-field calculations were performed on [Ag{Co(aet)(en)(2)}](NO3)(3) (aet=H2NCH2CH2S-) systems to further understand the occurrence of spontaneous resolution [1]. Results of the calculations reveal that the LambdaLambdaLambdaLambda strand is more stable than the DeltaDeltaDeltaDelta strand. Furthermore, the spontaneously crystallized system LambdaLambdaLambdaLambda, with six constitutional repeating units (CRUs), LambdaLambdaLambdaLambdaLambdaLambda, was more stable than the hetero-chiral system, DeltaDeltaDeltaDelta, with the same six units as above. In addition, the calculations revealed that electrostatic interactions contributed most of the stability to the system.
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页码:641 / 645
页数:5
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