(C6H14N2){Zn[ZnB2P4O15(OH)2]•(C6H13N2)Cl}:: A new templated zincoborophosphate

Colorless crystals of (C6H14N2){Zn[ZnB2P4O15(OH)(2)].(C6H13N2)Cl} (1) were prepared from mixtures of ZnCl2, B2O3, diaza-bicyclo[2.2.2] octane (DABCO), and 85% H3PO4 under mild hydrothermal conditions (170 degreesC). The crystal structure was determined by single-crystal X-ray diffraction (monoclinic, P2(1)/c (No. 14), a = 1704.3(1) pm, b = 937.03(5) pm, c = 1619.75(8) pro, beta = 96.894(3)degrees, Z = 2). The crystal structure contains tetrahedral zigzag ribbons, [ZnB2P4O15(OH)(2)](4-)}, running along [010]. Additional ZnO2NCl tetrahedra at the borders complete the ribbons by sharing common O-corners with the zincoborophosphate polymer. The nitrogen atoms of the quaternary ZnO2NCl tetrahedra belong to monoprotonated (HDABCO)(+) ions. A second (diprotonated) species, (H(2)DABCO)(2+), acts as a pure template and is fixed to adjacent zincoborophosphate ribbons along [100] via hydrogen bonds. The title compound 1 can be described as an adduct of (C6H14N2){Zn [ZnB2P4O15(OH)(2)]} with diaza-bicyclo[2.2.2]octane-hydrochloride. Thermoanalytical and X-ray powder diffraction investigations to high temperatures (740 degreesC) show the decomposition of 1 and the formation of a NH4[ZnBP2O8] polymorph as an intermediate.