The preparations of [(t-Bu)(2)InNEt2](2) and [(t-Bu)(2)InN(n-Bu)(2)](2) by the photoinduced reactions of (t-Bu)(3)In with Et2NSnMe3 and (n-Bu)(2)NSnMe3, respectively, have been investigated. The isolation and characterization of products other than [(t-Bu)(2)InNR2](2) in these reactions clearly indicate that the reactions of (t-Bu)(3)In with R-2- NSnNe3 do not proceed by simple alkyltrlmethyltin elimination. A possible radical mechanism for the formation of the byproducts has been suggested, X-ray crystallographic studies indicate that bath compounds are dimeric in the solid state. Crystallographic data : for [(t-Bu)(2)InNEt2](2), orthorhombic space group Pbca (No. 61), a = 19.135(7)Angstrom, b= 19.670 Angstrom, c = 15,793 (7) Angstrom, V = 5944.41 (5) Angstrom(3), rho(calcd) = 1.346 g cm (-3), for [(t-Bu)(2)-InN(n-Bu)(2)](2), triclinic space group P (1) over bar (No. 2), a = 11.943(2) Angstrom, b = 15.790(1) Angstrom, c = 10.711(3) Angstrom, alpha = 98.60(1)degrees, beta = 103.54(2)degrees, gamma = 94.85(1)degrees, V = 1926 Angstrom(3), rho(calcd) = 1.232 g cm(-3). Mass spectrometry data indicate that both compounds exist as dimers in the gaseous state.