Variations on the (3,4)-Net Motif in Organo-Zincophosphite Chemistry: Syntheses and Structures of (CN3H6)2·Zn3 (HPO3)4·H2O and H3N(CH2)3NH3·Zn3(HPO3)4·H2O

The solution-mediated syntheses and single-crystal structures of (CN3H6)2·Zn3(HPO3)4·H2O (I) and H3N(CH2)3NH3·Zn3 (HPO3)4·H2O (II) are reported. These phases contain networks of vertex-sharing ZnO4 tetrahedra and HPO3 pseudopyramids accompanied by organic cations and water molecules. Despite their similar formulae, these phases adopt different crystal structures, in terms of three-dimensional and two-dimensional ZnO4midHPO3 networks, for I and II, respectively. Their similarities and differences to other zinc phosphites and phosphates are briefly discussed. Crystal data: (CN3H6)2·Zn3(HPO3)4· H2O, Mr=654.23, triclinic, P (No. 2), a=7.5121 (3) ?, b=8.9927 (4) ?, c=15.1530 (6) ?, alpha=90.256 (1)°, beta= 93.391 (1)°, gamma=111.091 (1)°, V=953.04 (7) ?3, Z=2, R(F)=0.048, wR(F2)=0.121. H3N(CH2)3NH3·Zn3(HPO3)4· H2O, Mr=610.22, monoclinic, C2/c (No. 15), a=8.9310 (4) ?, b=14.4308 (6) ?, c=14.3669 (6) ?, beta=104.624 (1)°, V=1791.64 (13) ?3, Z=4, R(F)=0.033, wR(F2)=0.087.