Abstract: The triphenylsilylmethyl radical (l), generated by the di-t-butyl peroxide decarbonylation of neat P, P, P-triphenylsilylacetaldehyde (4), did not rearrange under the conditions employed. Only triphenylmethylsilane (10) resulted. Dilution of 4 in chlorobenzene did not alter the result. This same radical, as well as the phenyldimethylsilylmethyl (silaneophyl) and trimethylsilylmethyl (silaneopentyl) radicals 2 ...