New three-dimensional (3,4)-net zincophosphites templated by linear diammonium cations: H_3N(CH_2)_5NH_3Zn_3(HPO_3)_4 and beta-H_3N(CH_2)_6NH_3 centre dot Zn_3(HPO_3)_4

摘要

The mild-condition syntheses, single-crystal structures and properties of H_3N(CH_2)_5NH_3 centre dot Zn_3(HPO_3)_4 and beta-H_3N(CH_2)_6NH_3 centre dot Zn_3(HPO_3)_4 are reported. Both are constructed from (3,4)-nets of ZnO_4 tetrahedra and HPO_3 pyramids, sharing vertices to result in three-dimensional anionic open-frameworks. In both materials, the organic species interacts with the framework by way of N-H---O bonds. Crystal data: H_3N(CH_2)_5 NH_3 center dot Zn_3(HPO_3)_4, M_r = 620.22, orthorhombic, Pccn (No. 56), a = 9.5364 (9) A, & = 21.8015 (19) A, c = 9.1118 (7) A, V=1894.4 (3)A~3, Z = 4, R(F) = 0.044, wR(F~2) = 0.111. beta-H_3N(CH_2)_6NH_3-Zn_3(HPO_3)_4, M_r = 634.25, monoclinic, P2_1 (No. 14), a = 8.7627 (1)A, b = 13.8117 (2) A,c= 16.6187 (3) A,. beta = 92.680 (1)deg, V= 2009.12 (5) A~3, Z=4, R(F) = 0.072, wR(F~2) = 0.187.