Crystallographic Comparison of 4-cyano-4′-n-Decycloxybiphenyl and 4-Cyano-4′-n-Dodecycloxybiphenyl

Abstract

The crystal structures of 4-cyano-4'-n-decycloxybiphenyl (C 23 H 29 NO) ( I ) and 4-cyano-4'-n-dodecycloxybiphenyl (C 25 H 33 NO) ( II ) have been determined by X-ray diffraction methods. I and II crystallize in the monoclinic system with space group C2/c. The final R-factor for I is 0.066 (F o >4 σ (F o ) and 0.085 for all data, wR(F 2 ) = 0.189 for 2444) and it is 0.068 for II (F o >4 σ (F o ) and 0.111 for all data, wR(F 2 ) = 0.164 for 1723). Both phenyl rings are almost planar, and dihedral angle between both rings is 31.2(7) and 31.0(2) for I and II , respectively.