(C6H14N2){Zn[ZnB2P4O15(OH)2]·(C6H13N2)Cl}: A New Templated Zincoborophosphate
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Colorless crystals of (C6H14N2){Zn[ZnB2P4O15(OH)2]·(C6H13N2)Cl} (1) were prepared frommixtures of ZnCl2, B2O3, diaza-bicyclo[2.2.2]octane (DABCO), and 85% H3PO4 under mildhydrothermal conditions (170 ages/entities/deg.gif">C). The crystal structure was determined by single-crystalX-ray diffraction (monoclinic, P21/c (No. 14), a = 1704.3(1) pm, b = 937.03(5) pm, c =1619.75(8) pm, ages/gifchars/beta2.gif" BORDER=0 ALIGN="middle"> = 96.894(3)ages/entities/deg.gif">, Z = 2). The crystal structure contains tetrahedral zigzagribbons, {[ZnB2P4O15(OH)2]4-}, running along [010]. Additional ZnO2NCl tetrahedra atthe borders complete the ribbons by sharing common O-corners with the zincoborophosphatepolymer. The nitrogen atoms of the quaternary ZnO2NCl tetrahedra belong to monoprotonated (HDABCO)+ ions. A second (diprotonated) species, (H2DABCO)2+, acts as a puretemplate 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]} withdiaza-bicyclo[2.2.2]octane-hydrochloride. Thermoanalytical and X-ray powder diffractioninvestigations to high temperatures (740 ages/entities/deg.gif">C) show the decomposition of 1 and the formationof a NH4[ZnBP2O8] polymorph as an intermediate.

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