PIPERIDINIUM DIAZIDOTRIPHENYLSTANNATE AND QUINUCLIDINIUM DIAZIDOTRIPHENYLSTANNATE

Two triphenyltin-azide adducts with cyclic aliphatic amines are shown by X-ray diffraction to be [LH][(C6H5)(3)Sn(N-3)(2)], where for (I), L = piperidine (C5H11N), and for (II), L = quinuclidine (C7H13N). The a nions have quasi-trigonal-bipyramidal symmetry, with the azide groups occupying axial positions. In each case, the azide groups are non-equi valent due to one of them hydrogen bonding with the cation. In (I), th e NH2 of the cation hydrogen bonds with azides of adjacent anions form ing chains through the lattice. For (II), the asymmetric unit has two cations and anions. One cation singly hydrogen bonds to an azide group of one anion, while the other cation forms a bifurcated hydrogen bond linked to azide groups on the two different anions. The cations have their usual geometries, the piperidinium ion having the expected chair conformation.