Interactions of sulfur-containing compounds with transition metal clusters and metal surfaces III

Reactions of sulfur-containing substituted dibenzothiophenes with transition metals have been continued with emphasis on the nature and type of metal-sulfur bonding, including the effect of the metal on the adjacent bond lengths. The structure of ({eta}{sup 5}-cyclopentadienyl) carbonyl 4-P-diphenyl-phosphine dibenzothiophene iron (II) iodide has been determined by x-ray diffraction. The synthesis of {mu}2 bridged dinuclear Fe(II) complex with 4-thiomethyldibenzothiophene is reported. The structure of the complex dicyclopentadienyl dicarbonyl di-iron dithiomethyl dibenzothiophene has been determined by {sup 1}H NMR, {sup 13}C NMR, FTIR, FABMS, and elemental analysis. Interestingly, {sup 13}C NMR and {sup 1}H NMR showed significant shift after complex formation. The structure of 4-S-Methyldibenzothiophene has been determined by x-ray diffraction. The geometry of 4-S-Methyldibenzothiophene is orthorhombic with planar dibenzothiophene having the methyl sulfide substituent out of plane of the ring. It is hoped through these studies to increase our understanding of the role in-situ metal sulfides play in the coal desulfurization process and to improve predictions of new routes to coal desulfurization. 15 refs., 6 figs., 7 tabs.