Alkylidyne (carbaborane) complexes of the Group 6 metals. 9. The closo to hyper-closo transformations in a tungstacarborane cage system: crystal structure of [NEt4][W2(.mu.-CC6H4Me-4)(CO)2(.eta.5-7,8-Me2-7,8-C2B9H9)[.eta.6-7,8-Me2-7,8-C2B9H8-10-(CH2C6H4Me-4)]]

1992 ◽  
Vol 11 (11) ◽  
pp. 3697-3704 ◽  
Author(s):  
Nicholas Carr ◽  
Donald F. Mullica ◽  
Eric L. Sappenfield ◽  
F. Gordon A. Stone
2012 ◽  
Vol 84 (11) ◽  
pp. 2233-2241 ◽  
Author(s):  
K. Geetharani ◽  
Shubhankar Kumar Bose ◽  
Sundargopal Ghosh

Heterometallic cubane-type clusters were synthesized from the reaction of group 6 and 8 metallaboranes using transition-metal carbonyl compounds. Structural and spectroscopic study revealed the existence of novel “capped-cubane” geometry. In addition, the crystal structure of these clusters distinctly confirms the presence of boride unit as one of the vertices. These clusters possess 60 cluster valence electrons (cve) and six metal–metal bonds. A plausible pathway for the formation of ruthenium-capped cubane has been described.


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