Patent ID: 7005530

Claim:
A method for purifying a Group III metal hydrocarbon having the general formula (1): R 1 R 2 R 3 M (1) wherein R 1 , R 2 and R 3 are each independently a monovalent hydrocarbon group of 1 to 6 carbon atoms, and M is a Group III metal element, said method comprising the steps of (a) providing a Group III metal hydrocarbon adduct having the general formula (2): (R 1 R 2 R 3 M) x L (2) wherein R 1 , R 2 , R 3 , and M are as defined above, L is a Lewis base, and x is an integer equal to the number of donor atoms present in the Lewis base, in a solvent having a boiling point which is up to 200° C., but at least 30° C. higher than the boiling point of the Group III metal hydrocarbon having formula (1), and (b) causing said adduct to undergo thermal dissociation, thereby releasing the Group III metal hydrocarbon.