Piperidinium diazidotriphenylstannate and quinuclidinium diazidotriphenylstannate

Article abstract of DOI:10.1107/S010827019700958X

Two triphenyltin-azide adducts with cyclic aliphatic amines are shown by X-ray diffraction to be [LH][(C₆H₅)₃Sn(N₃)₂], where for (I), L = piperidine (C₅H₁₁N), and for (II), L = quinuclidine (C₇H₁₃N). The anions have quasi-trigonal-bipyramidal symmetry, with the azide groups occupying axial positions. In each case, the azide groups are non-equivalent due to one of them hydrogen bonding with the cation. In (I), the NH₂ of the cation hydrogen bonds with azides of adjacent anions forming 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.