Tungsten chalcogenides

Trinuclear Molybdenum and Tungsten Cluster Chalcogenides From Solid State to Molecular Materials... 

Heterometal alkoxide precursors, for ceramics, 12, 60-61 Heterometal chalcogenides, synthesis, 12, 62 Heterometal cubanes, as metal-organic precursor, 12, 39 Heterometallic alkenes, with platinum, 8, 639 Heterometallic alkynes, with platinum, models, 8, 650 Heterometallic clusters as heterogeneous catalyst precursors, 12, 767 in homogeneous catalysis, 12, 761 with Ni—M and Ni-C cr-bonded complexes, 8, 115 Heterometallic complexes with arene chromium carbonyls, 5, 259 bridged chromium isonitriles, 5, 274 with cyclopentadienyl hydride niobium moieties, 5, 72 with ruthenium—osmium, overview, 6, 1045—1116 with tungsten carbonyls, 5, 702 Heterometallic dimers, palladium complexes, 8, 210 Heterometallic iron-containing compounds cluster compounds, 6, 331 dinuclear compounds, 6, 319 overview, 6, 319-352... 

In 222, the Mo atom occupies the common apical site of two distorted square-pyramidal cores, in each of which the two Fe atoms, one Se atom, and one Te atom occupy the basal sites. The formation of 222 demonstrates the contrast in the influence of the chalcogens in cluster-expansion reactions. Although 77 readily reacts with [M(CO)s(THF)] (M = W, Mo) to form [Fe2M(CO)io(/i3-Se)2] (M = W (217), Mo (218)), 110 reacts with the tungsten compound only to form 216 formation of [Fe2Mo(CO)io((u.3-Te)2] is not observed. An intermediate situation arises when the mixed-chalcogenide compound 114 is used for reacting with [Mo(CO)5(THF)]. The formation... 

Tributylphosphine sulfide has been used as a co-catalyst with dicobalt octacarbonyl for the Pawson-Khand reaction. Thermolysis of a mixture of cadmium chloride and trioctylphosphine sulfide at 250 °C has been used as a route to the formation of nanocrystalline cadmium sulfide." A complex of triphenylphosphine sulfide with a silver-tungsten-iodine acceptor has been characterised by X-ray studies. Ferrocenylphosphine chalcogenides have attracted considerable interest as ligands. Complexes of the monophosphino-phosphine sulfide (269) with rhodium have been characterised." The disulfide (270) forms complexes with both gold(i) and gold(iii) acceptors," and a silver(i) complex of the diselenide (271) has been prepared. ... 

A-heterocyclic germylenes and related compounds 04CCR(248)411. Supramolecular compounds of cucurbituril and chalcogenide cluster aquocom-plexes of molybdenum and tungsten 03IZV987. 

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