Structure of (1α,3β,5α)-5-chloro-1,3-di­phenyl-5-bis­(tri­methylsilyl)methyl-1λ6,3λ6,2,4,6,5λ5-di­thiatri­aza­phosphorine 1,3-dioxide

C19H29CIN302PS2Si~, Mr=518"17, monoclinic, P21/n, a= 10.751 (3), b= 22.48 (1), c= 10.942 (3)A, fl=108.58(2) ° , V=2507(2)A 3, Z= 4, D x= 1.373gcm -3, MoK~, 2=0.71073A, g= 4.9 cm -x, F(000) = 1088, T= 130 K, R = 0.069 for 2831 observed reflections with I> 2.5a(I). The inorganic ring skeleton has an envelope conformation. The S-N and P-N bond lengths (mean values) are 1.562 (6) and 1.590 (8)A, respectively. One of the phenyl rings exhibits a disordered behaviour

Structure of ethyl 2,4,4,6,6-penta­chloro-1,3,5,2λ5,4λ5,6λ5-tri­azatriphosphinine-2-carbamate

C3H6CI5N402P3, Mr = 400"29, orthorhombic, Pnnm, a=9.195(2), b = 14-348(3), c= 11.351 (1) A, V= 1497.5 (5) A 3, Z= 4, Dx = 1.775 g cm -3, A(Mo K~) = 0-71073 A, /z = 12.8 cm-l, F(000) = 792, T = 298 K, Rr = 0-042 for 1035 reflections with I_> 2.5cr(/). The crystal structure consists of dimers arising from hydrogen-bond bridges. The organic moiety is located close to the NP ring. The endocyclic N--P bond lengths average to 1-570 (5) A; N--P (exocyclic) = 1.662 (6) A. The P--CI bond lengths vary from 1.974(2) to 2.007 (3) A