Tetrahedral-Atom Zincophosphate Structures. Zinc Diethyl Phosphate, Zn(02P(OC2H5)2)2x, a One-Dimensional Inorganic "Polymer"
CALIFORNIA UNIV SANTA BARBARA DEPT OF CHEMISTRY
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The synthesis, structure and some properties of a new, anhydrous, zinc ethyl phosphate are described. Zn02P-OC2H522 ZnPOEt crystallizes in the monoclinic space group C2c No. 15 with a 22.176 6 A, b 8.042 2 A, c 9.088 3 A, beta 96.553 8deg, v 1610 A3, Pcalc 1.533 gcu cm mu 17.8 cm, and Z 4, with RF sub o 6.94 for 658 observed reflections I sigmaI. 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 ZnPO32. 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, ZnS2pOC2H522.
- Inorganic Chemistry
- Polymer Chemistry
- Atomic and Molecular Physics and Spectroscopy