Disulfur-bridged complexes of molybdenum. Crystal structure of the dimolbdenum(IV) complex [{MoCl3(C4H8S)}2(µ-S2)(µ-C4H8S)] and of the MoIVMoVcomplex [(Me2S)2Cl2Mo({µ-S2)(µ-S)MoCl3(SMe2)]
摘要:
Treatment of [Mo(CO)6] with S2Cl2 gave a very dark green material of empirical formula Mo2S2Cl6.CH2Cl2 1 which, on reaction with L, gave green [{MoCl3(L)}2(mu-S2)(mu-L)] (L = C4H8S 2a, PhCH2SMe 2b or C4H8O 2c), and with SMe2 gave the novel, brown, unsymmetrical, mixed-oxidation-state complex [(Me2S)2Cl2Mo(mu-S2)(mu-S)MoCl3(SMe2)] 3. The structures of 2a and 3 have been established by X-ray crystallography. Compounds 2a-2c are diamagnetic and NMR data have been obtained, whereas 3 is paramagnetic and shows, in a CH2Cl2 glass at 40 K, a broad, roughly axial EPR resonance with g(max) at 1.94.