Abstract
The structures of cetylpyridiniumammonium bromide (CPyB) and cetylquinuclidinium bromide (CQB), two tetraalkylammonium bromide surfactants, are reported. In particular, whereas the structure solution of CPyB was carried out through conventional single-crystal diffractometry, the structure of CQB has been determined by means of powder diffractometry. CPyB crystallizes in P[unk] space group with cell parameters a = 7.618(2) Å, b = 5.554(1) Å, c = 27.474(7) Å, α = 95.03(2)°, β = 95.65(2)°, γ = 100.89(2)°, V = 1129.2(5) Å3 (R = 0.066, wR = 0.054): CQB also in P[unk] with cell parameters a = 8.1395(8) Å, b = 6.4475(7) Å, c = 25.237(2) Å, α = 99.921(6)°, β = 93.123(9)°, γ = 111.956(9)°, V = 1222.9(2) Å3 (Rp = 0.097, wRp = 0.128, Rexp = 0.078, and R(F2) = 0.127).
© 2015 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München
