Accession Number : ADA263040


Title :   Tetrahedral-Atom Zincophosphate Structures. Zinc Diethyl Phosphate, Zn(02P(OC2H5)2)2x, a One-Dimensional Inorganic Polymer


Corporate Author : CALIFORNIA UNIV SANTA BARBARA DEPT OF CHEMISTRY


Personal Author(s) : Harrison, W A ; Nenoff, T M ; Gier, T E ; Stucky, G D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a263040.pdf


Report Date : 15 Feb 1993


Pagination or Media Count : 7


Abstract : The synthesis, structure and some properties of a new, anhydrous, zinc ethyl phosphate are described. Zn(02P-(OC2H5)2)2 (ZnPOEt) crystallizes in the monoclinic space group C2/c (No. 15) with a = 22.176 (6) A, b = 8.042 (2) A, c = 9.088 (3) A, beta = 96.553 (8)deg, v = 1610 A3, Pcalc = 1.533 g/cu cm mu = 17.8 /cm, and Z = 4, with R(F sub o) = 6.94% for 658 observed reflections I sigma(I). The novel structure consists of infinite 1-dimensional chains of vertex-linked zinc-oxygen and phosphorus-oxygen tetrahedra forming four-rings : two of the phosphate P-0 vertices are coordinated to ethyl (-C2H5) groups, and the herringbone crystal packing is determined by van der Waals' forces between these terminal organic groups. Physical (TGA, DSC) and spectroscopic data (IR, 1H, and 31P NMR) are presented. The physical data show a melting, followed by a decomposition reaction, eventually resulting in Zn(PO3)2. ZnPOEt is soluble in, and recrystallizable from, several polar and nonpolar solvents: the NMR data suggest that ZnPOEt maintains a polymeric state in solution. ZnPOEt is contrasted with its sulfur containing analogue, Zn(S2p(OC2H5)2)2.


Descriptors :   *ZINC , *PHOSPHATES , *INORGANIC POLYMERS , IONS , METALS , REPRINTS , CRYSTAL STRUCTURE , SYNTHESIS , ONE DIMENSIONAL , MOLECULAR STRUCTURE , RINGS , TERMINALS , ETHANOLS , INORGANIC CHEMISTRY , ETHYL RADICALS , DECOMPOSITION , PHOSPHORUS , SULFUR , SOLVENTS , ATOMS , REFLECTION , OXYGEN , CHAINS , MELTING


Subject Categories : Inorganic Chemistry
      Polymer Chemistry
      Crystallography
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE