Antimony pentachloride oxidation of arenetricarbonyl complexes of molybdenum and tungsten and a new route to substituted halogenocarbonyls
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 2355-2357
- https://doi.org/10.1039/j19690002355
Abstract
The complexes M(CO)3 arene (M = Cr, Mo, or W, arene = hexamethylbenzene (hmb); M = Mo or W, arene = mesitylene, durene, or p-cymene) react with antimony pentachloride in dichloromethane to give the orange-red ionic products [M(CO)3 arene Cl]SbCl6. For the complexes where M = Mo or W and arene = hmb, the products were fully characterised as the hexachloroantimonate and tetraphenylborate salts but in all other cases the products could not be obtained pure. [M(CO)3(HMB)Cl]BPh4 reacts with certain monodentate ligands to give the diamagnetic monomeric product M(CO)3L2Cl2(L = PPh3 or AsPh3) together with some M(CO)3 hmb, whereas with bidentate ligands the ionic derivatives [M(CO)2(LL)2Cl]BPh4[LL = 2,2′-bipyridyl, 1,10-phenanthroline, or o-phenylenebisdimethylarsine] are obtained. With the terdentate bis-(o-dimethylarsinophenyl)methylarsine simple replacement of the hmb group occurs to give [M(CO)3(o-triars)Cl]BPh4.Keywords
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