Patent ID: 8796483

Claim:
A cyclic amide represented by the general formula wherein M is tin or lead, and wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 ,R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , and R 22 are selected independently from hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, trialkylsilyl, fluoroalkyl groups or alkyl groups substituted by other non-metal atoms or groups, and wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , and R 22 are independently selected to provide a cyclic amide capable of vaporizing prior to decomposition.