Two three-dimensional tetrahedral framework zinc phosphates with infinite Zn-O-Zn chains: H[Zn-4(PO4)(3)]H2O and [Zn-4(H2O)(PO4)(3)] NH(CH3)(3)

Two zinc phosphates materials (ZnPO-W and ZnPO-TMA), both containing infinite Zn-O-Zn chains as part of the three-dimensional framework have been prepared by hydrothermal methods and characterized by single-crystal X-ray diffraction. ZnPO-W has one six-ring channel and one eight-ring channel (six or eight refers to the number of tetrahedral atoms forming the rings) along the a-axis with water molecules in channels. ZnPO-TMA has two different eight-ring channels also along the a-axis with trimethylammonium cations located within channels. ZnPO-W was also studied with the thermogravimetry and its decomposition products at 600 and 1000 degrees C were identified with X-ray powder diffraction. Crystal data for H[Zn-4(PO4)(3)]H2O (ZnPO-W), M = 565.42, space group <P(1)over bar>, a = 5.0549(9), b = 9.624(2), c = 13.158(2), alpha = 101.007(1) degrees, beta = 100.942(1) degrees, gamma = 103.606(1) degrees, V = 591.9(8) Angstrom(3), Z = 2, D-c = 3.17 gcm(-3), clear needle, MoK alpha, lambda = 0.71073 Angstrom mu = 8.68 mm(-1), 2 theta(max) = 60 degrees R = 3.56 %, wR = 3.81 %, GOF = 0.999 for 180 parameters and 3226 unique reflections with I > 3.0 sigma(I). Crystal data for [Zn-4(H2O)(PO4)(3)] NH(CH3)(3) (ZnPO-TMA), M = 624.53, space group <P(1)over bar>, a = 5.304(2), b = 9.296(3), c = 15.474(5), alpha = 86.462(1) degrees, beta = 86.420(2) degrees, gamma = 78.906(2) degrees, V = 746.4(4) Angstrom(3), Z = 2, D-c = 2.78 gcm(-3), clear thin needle, MoK alpha, lambda = 0.71073 Angstrom, mu = 6.90 mm(-1), 2 theta(max) = 60 degrees, R = 5.75 %, wR = 4.07 %, GOF = 1.01 for 214 parameters and 2992 unique reflections with I > 3.0 sigma(I). (C) 1996 Academic Press,Inc.