Synthesis and structure determination of a new layered zincophosphate: [H2N2C6H16](0.5)[Zn-2(PO4)(HPO4)(H2O)]center dot H2O

The synthesis and crystal structure of a new microporous zincophosphate are described. [H2N2C6H16](0.5)[Zn-2(PO4)(HPO4)(H2O)]. H2O crystallizes in the triclinic space group <P(1)over bar> with a = 8.822(4), b = 9.236(4), c = 8.451(3) Angstrom, alpha = 67.19(3), beta = 91.32(3), gamma = 111.10(3)degr ees, V = 586.7(4) Angstrom(3) and Z = 2. This new material consists of infi nite two-dimensional anionic layers alternated with planes containing organ ic diprotonated templates, N, N, N', N'-tetramethylethylenediamine [H2N2C6H 16](2+) molecules. The framework structure is built up of ZnO4, ZnO3OH2, PO 4, and PO3OH tetrahedra, linked through oxygen vertices. The presence of te rminal OH2 and OH groups, leads to an open structure containing four- and e ight-rings. The organic molecules are interconnected to the framework throu gh hydrogen bonds.