SYNTHESIS, STRUCTURE, AND MAGNETISM OF A NEW TYPE OF Π-MOLECULAR COMPLEX CONTAINING BINUCLEAR COPPER(II) COMPLEXES AND BENZENE: BIS(2,2-DIMETHYL-7-(PHENYLIMINO)-3,5,7-OCTANETRIONATO)DICOPPER(II)-BENZENE AND BIS(2,2-DIMETHYL-7-((4-NITR