220720-99-0Relevant articles and documents
Synthesis and characterization of a series of new thiocarboxylate complexes of molybdenum(V)
Cindric, Marina,Matkovic-Calogovic, Dubravka,Vrdoljak, Visnja,Kamenar, Boris
, p. 223 - 228 (1999)
The novel tetranuclear complexes of the type [Mo4O6S2(R′COCHCOCH3) 2(OSCR″)2], where R′ = -CH3 or -C6H5 and R″ = -C6H5, -CH3, -C(CH3)3 or -CH2CH(CH3)2, have been prepared by the reactions of dinuclear oxomolybdenum(V) complexes [Mo2O3(acac)4] (acac = 2,4-pentanedionato) or [Mo2O3(ba)4] (ba = 1-phenyl-1,3-butanedionato) with thiobenzoic (1 and 5), thioacetic (2 and 6), thiotrimethylacetic (3 and 7) and thio-3-methylbutyric (4 and 8) acid, respectively. The molecular structures of the complexes 1, 3 and 6 have been determined by a single crystal X-ray crystallography. The centrosymmetrical tetranuclear complexes contain Mo4O6S2 cores bridged through β-diketonato and thiocarboxylato ligands. Four coordination octahedra are fused by sharing common edges thus allowing the formation of localized metal-metal bonds between two pairs of molybdenum atoms. The insertion of sulfur atoms into the MoSMo bridges originates from H2S produced in situ from the molybdenum catalysed hydrolysis of thioacids.
