Preparation and characterization of hexacyclohexoxido- and trispinacolato-ditungsten (MM). A comparison of staggered and eclipsed ethane-like O3WWO3 units
Syntheses and structures of metal–metal triply bonded M2R6 compounds: consideration of starting materials, stability, and structural parameters
作者:Thomas M Gilbert*、Cary B Bauer、Robin D Rogers
DOI:10.1016/s0277-5387(98)00434-3
日期:1999.3
compounds [Mo2(CH2CMe2Ph)6, 1; Mo2(CH2SiMe2Ph)6, 2; W2(CH2SiMe2Ph)6, 3; and W2(CH2Ph)6, 4] are reported. The synthetic effort suggests that ditungsten compounds are inherently more difficult to prepare and more thermally sensitive than dimolybdenum compounds, probably as a result of the larger dimetal core the ligands must protect. The structural data confirm that dimetal hexaalkyls exhibit shorter
Metal alkoxides. Models for metal oxides. 15. Carbon-carbon and carbon hydrogen bond activation in the reactions between ethylene and ditungsten hexaalkoxides: W2(OCH2-t-Bu)6(.eta.2-C2H4)2, W2(OR)6(CH2)4(.eta.2-C2H4), and W2(OR)6(.mu.-CCH2CH2CH2) (where R = Ch2-t-Bu, i-Pr, c-C5H9, and c-C6H11). Preparations, properties, structures, and reaction mechanisms
作者:Malcolm H. Chisholm、John C. Huffman、Mark J. Hampden-Smith
DOI:10.1021/ja00196a039
日期:1989.7
An allene adduct of ditungsten hexa-tert-butoxide: prediction of a stabilized .mu.-.eta.3-CH2CCH2 moiety
作者:Roger H. Cayton、Malcolm H. Chisholm、Mark J. Hampden-Smith