Sonochemistry with metal carbonyls

CONTENTS Introduction to Series An Editor s Foreword, Albert Padwa. Introduction, Timothy J. Mason. Historical Introduction to Sonochemistry, D. Bremner. The Nature of Sonochemical Reactions and Sonoluminescence, M.A. Mar-guli. Influence of Ultrasound on Reactions with Metals, 6. Pugin and A.T. Turner. Ultrasonically Promoted Carbonyl Addition Reactions, J.L. Luche. Effect of Ultrasonically Induced Cavitation on Corrosion, W.J. Tomlinson. The Effects ... 

Since power ultrasound is capable of generating extremely high pressures and temperatures within microbubbles in a liquid medium the possibility arises that sonochemistry might replace conventional (and expensive) high pressure reactors. Power ultrasound has been found to dramatically reduce the temperatures and pressures required for the preparation of early transition metal carbonyl anions from the direct reaction of the corresponding metal chlorides with carbon monoxide (Scheme 10.6) [18]. In this particular case the yield of V(CO)6 (35%) can be obtained at 4.4 atmos pressure and 10°C whereas conventional methodology requires 200 atmos and 160°C. 

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