quantum mechanic studies of natural bond orbital & stabilities of [cuch2sime3]4complexes with different halogens

quantum mechanic studies of natural bond orbital & stabilities of [cuch2sime3]4complexes with different halogens

the asymmetric unit of the title compound,  contains two independent molecules. the cu atoms are four coordinated in distorted tetrahedral configuration by two atoms from 5,5`-dimethyl-2,2`- bipyridine and two terminal atoms. in the cuystal structure, inter molecular hydrogen bonds link the molecules. the are  contacts between the methyl groups and the pyridine and five member rings containing cu atoms.  contacts also exist between the pyridine rings.