SYNTHESIS AND CHARACTERIZATION OF RHODIUM COMPLEXES CONTAINING ATROPISOMERIC SULFUR LIGANDS - STRUCTURE OF [(RH-2(MU-L)(CO)(3)[P(OC(6)H(4)BU(T)-O)(3)])(2)] (H(2)L=1,1'-BINAPHTHALENE-2,2'-DITHIOL)

The addition of the atropisomeric racemic sulfur compound 1,1'-binapht halene-2,2'-dithiol (H(2)L) to a dichloromethane solution of [{Rh(mu-O Me)(cod)}(2)] (cod = cycloocta-1,5-diene) afforded the dithiolate-brid ged complexes [{Rh-2(mu-L)(cod)(2)}(n)] (n = 21 or 12). These reacted with carbon monoxide to give the dinuclear tetracarbonyl complex [Ru-2 (mu-L)(CO)(4)] 3. The reaction of 3 with PR(3) provided the mixed-liga nd complexes [{Rh-2(mu-L)(CO)(2)(PR(3))(2)}(2)] (R = Ph 4 or C(6)H(11) 5) and [{Rh-2(mu-L)(CO)(3)(PR(3))}(2)] 6 [R = P(OC(6)H(4)Bu(t)-o)(3)]. The crystal structure of 6 was determined by X-ray diffraction.