T. Murafuji et al., Structure and spectroscopic characteristics of 2 '-diethylboryl-4 ''-dimethylaminochalcone bearing an intramolecular boron-oxygen coordinate bond, NEW J CHEM, 23(7), 1999, pp. 683-685
How formation of an intramolecular coordinate bond affects the molecular st
ructure was examined in the structural comparison of 2'-diethylboryl-4"-dim
ethylaminochalcon (1) and 2'-ethylenedioxyboryl-4"-dimethylaminochalcone (2
) with chloro(2-[(4-dimethylaminostyryl) carbonyl]phenyl)(4-methylphenyl)]b
ismuthane (3) and 4"-dimethylaminochalcone (4).