TY - JOUR
AU1 - He, Cheng
AU2 - Zhang, Bingguang
AU3 - Xie, Lixia
AU4 - Liu, Yang
AU5 - Duan, Chunying
AB - The assembly of racemic molecular clips SS- and RR- 1,1'-bis(1-(1,2,4-triazol-1-yl)ethyl)ferrocene (FcTz) into coordination polymers has been studied systematically. Stereoselective homochiral association of Zn(CH3COO)2·4 H2O leads to the formation of one-dimensional helical chains having a right handed enantiomer 1 and a left-handed enantiomer 1′ via self-assembly. The CD spectra of crystals of 1 and 1′ exhibit the opposite Cotton responses and suggest that two enantiomers of the molecular clips are resolved by the metal-induced crystallization. On the other hand, the meso type association of CdI2 results in the formation of centro-symmetric two-dimensional sheets. It is shown that the product of the homochiral association is predominately formed when the metal center is tetrahedrally coordinated, and that of the meso-association is generated at the time the metal centers is sited in a mirror symmetric tetragonal pyramidal geometry. The weak but significant intermolecular interactions are also found to be essential in controlling the homochiral aggregation of these helical polymers and achiral sheets.
TI - Stereoselective association of ferrocene-contained molecular clips in coordination polymers
JF - CrystEngComm
DO - 10.1039/b719509e
DA - 2008-05-20
UR - https://www.deepdyve.com/lp/royal-society-of-chemistry/stereoselective-association-of-ferrocene-contained-molecular-clips-in-cn2gx41aMX
SP - 759
EP - 764
VL - 10
IS - 6
DP - DeepDyve
ER -