The syntheses, crystal structures, and some properties of alpha- and beta -ZnHPO3.N4C2H4 are reported. These polymorphic phases are the first organically templated hydrogen phosphites. They are built up from vertex-sharing HPO3 pseudopyramids and ZnO3N tetrahedra, where the Zn-N bond represents a direct link between zinc and the neutral 2-cyanoguanidine template. alpha -ZnHPO3.N4C2H4 is built up from infinite layers of vertex-sharing ZnO3N and HPO3 groups forming 4-rings and 8-rings. beta -ZnHPO3.N4C2H4 has strong one-dimensional character, with the polyhedral building units forming 4-ring ladders. Similarities and differences to related zinc phosphates are discussed. Crystal data: alpha -ZnHPO3.N4C2H4, monoclinic, P2(1)/c, a = 9.7718 (5) Angstrom, b = 8.2503 (4) Angstrom, c = 9.2491 (5) A, beta = 104.146 (1)degrees, Z = 4. beta -ZnHPO3.N4C2H4, monoclinic, C2/c, a = 14.5092 (9) Angstrom, b = 10.5464(6) Angstrom, 10.3342 (6) Angstrom, beta = 114.290 (1)degrees, Z = 8.
- HYDROTHERMAL SYNTHESES
- TIN(II) PHOSPHATE