crystallization. X-ray structure analyses established the conspicuously similar molecular structures of the isoelectronic molybdenum and ruthenium complexes and the absolute configurations of 2a, 7b, 8b, 9b, 10a, 12a, and 13b. In the diastereomers (RMo,SC)- and (SMo,SC)-[(η7-C7H7)Mo(LL1)(CO)]BF4 (2a,b), the molybdenum configuration was configurationally labile at room temperature. The epimerization 2a ⇆ 2b
的反应[(η 7 -C 7 ħ 7)的Mo(η 6 -C 6 H ^ 5 CH 3)] BF 4与光学活性的席夫碱
配体LL 1 -LL 3(LL 1 =
吡啶-2- carbald- (小号)-1- phenylethylimine,LL 2 = 6-
甲基吡啶-2- carbald-(小号)-1- phenylethylimine,LL 3 =
吡啶-2- carbald-(小号)-1- cyclohexylethylimine)的
乙腈,得到非对映体(R Mo,S C)-和(S Mo,小号Ç) - [(η 7 -C 7 ħ 7)的Mo(LL 1 - 3)(NCMe)] BF 4(1A,b,图3a,b,和图5a,b)。与
一氧化碳反应导致非对映体的混合物([R沫,小号Ç) -和(小号沫,小号Ç) - [(η 7 -C 7 ħ 7)的Mo(LL 1 - 3)(CO)] BF 4(2a,b,4a,b和6a,b)。
配体LL