Sequential reaction of 2-lithio-2-trimethylsilyl-1,3-dithiane with dimethylformamide and ammonia: structure of bis[(1,3-dithian-2-ylidene)methyl]amine

C10H15NS4, M(r) = 277.48, monoclinic, P2(1)/c, a = 12.522 (3), b = 17.81 (1), c = 6.140 (1) angstrom, beta = 100.41 (1)-degrees, V = 1346.7 angstrom 3, Z = 4, D(x) = 1.37 g cm-3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 6.48 cm-1, F(000) = 584, room temperature, R = 0.038 for 1492 observed reflections. The bridging C = C-N-C = C group atoms are planar to within 0.014 angstrom; the C-N-C bond angle is 125-degrees. The S-C distances range from 1.759 to 1.824 angstrom.