LIGAND-CLUSTER REACTIVITY AND STRUCTURE RELATIONSHIP - THE SYNTHESIS,STRUCTURAL CHARACTERIZATION AND PROPERTIES OF 2 NEW MO-CU-S CLUSTER COMPOUNDS

By using Mo3S4(dtp)(4) . H2O (dtp=S2P(OEt)(2)) as starting material an d from the substitution reaction of ligands and the addition reaction with CuI, two novel Mo-Cu-S cubane-like duster compounds {[CuMo3S4] . I . (mu-dtc)(dtc)(3) . py} . CH3COOC2H5 (5) and {[CuMo(3)S(3)X} . I . (O)(2)(dtcpyr)(3) . py}(CH3COOC2H5)(0.6)(H2O)(0.4) (6) (X = 3/4O + 1/4 S, dtc = S2CN(Et)(2), dtcpyr = S2CN(C4H8)) have been obtained. The syn thesis, structural characterization and properties of these two cluste rs as well as their comparison with dtp structural analogues are descr ibed. The ligand-dnster reactivity and structure relationship is also discussed. Crystal data: for 5: space group P (1) over bar, a = 14.358 (6), b = 16.220(9), c = 11.421(5) Angstrom, alpha = 104.00(4), beta = 110.54(4), gamma = 87.23(5)degrees, Z = 2, 4809 reflections, R = 0.041 ; for 6: space group P2(1)/n, a = 15.179(9), b = 16.353(6), c = 17.621 (9) Angstrom, beta = 112.18(5)degrees, Z = 4, 3469 reflections, R = 0. 047.