Arenetricarbonyl-molybdenum and -tungsten complexes

• Published in: Journal of organometallic chemistry Vol. 102; no. 2; pp. 185 - 193
• Main Authors: Nesmeyanov, A.N., Krivykh, V.V., Kaganovich, V.S., Rybinskaya, M.I.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 09.12.1975
• ISSN: 0022-328X; 1872-8561
• DOI: 10.1016/S0022-328X(00)88586-1

A preparative method is described for the synthesis of arenetricarbonyl-molybdenum complexes from tripyridinemolybdenum tricarbonyl and boron trifluoride etherate in the presence of arene. A series of compounds unavailable by the direct procedure [heating of Mo(CO) 6, with arene] was prepared. In case of 1,4-diphenylbutadiene and tolane these two methods were found to give different results. 1,4-Diphenylbutadiene and Py 3Mo(CO) 3 in the presence of BF 3 · O(C 2H 5) 2 produce mono- and bi-nuclear arenemolybdenum tricarbonyl complexes, while Mo(CO) 6 affords bis(diphenylbutadiene)molybdenum dicarbonyl as the main product on heating. Unlike other arenes, tolane and Py 3Mo(CO) 3 yield tritolanemolybdenum carbonyl besides tolanemolybdenum tricarbonyl, whereas the direct procedure led to no arenetricarbonylmolybdenum complexes. The compounds obtained were identified by elemental analysis and IR.