Crystal and molecular structure of the monoclinic modification of NN-dimethyldithiocarbamatotrimethylstannane

The crystal structure of the monoclinic modification of Me3Sn·S·CS·NMe2 has been determined by single-crystal X-ray diffraction. The crystals are monoclinic, P21/c; a= 9·98 ± 0·03, b= 10·58 ± 0·01, c= 12·97 ± 0·04 Å, β= 121° 40′± 10′, Z= 4. The SnSC(S)N skeleton is approximately planar with an Sn–S(1) bond length of 2·47 ± 0·01 Å and an Sn ⋯ S(2) distance of 3·16 ± 0·01 Å; the molecular structure is very similar to that found for the two independent molecules in the orthorhombic modification. The other bond lengths are C–S(1)= 1·75 ± 0·01, C–S(2)= 1·72 ± 0·01, average Sn–C = 2·19 ± 0·02, N–C(1)= 1·31 ± 0·02, and average N–C(5,6)= 1·41 ± 0·03 Å.