Accession Number : ADA262518


Title :   Be(3)(AsO4)2.2H2O, a New Berylloarsenate Phase Containing 'Bridged' Tetrahedral 3-Rings


Descriptive Note : Technical rept. 1 Jun 92-31 May 93


Corporate Author : CALIFORNIA UNIV SANTA BARBARA DEPT OF CHEMISTRY


Personal Author(s) : Harrison, William T ; Nenoff, Tina M ; Gier, Thurman E ; Stucky, Galen D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262518.pdf


Report Date : 15 Feb 1993


Pagination or Media Count : 22


Abstract : The high-temperature/high-pressure hydrothermal synthesis and X-ray single crystal structure of Be3(AsO4)2(dot)2H2O is described: the title compound contains a three-dimensional network of BeO4 and AsO4 tetrahedra. The structural motif includes infinite layers of 'bridged' tetrahedral 3- and 4-rings. 9Be MAS NMR data are consistent with the Be-atom environments in the crystal structure.


Descriptors :   *WATER , *OXYGEN , *BERYLLIUM , *ARSENIC , CATIONS , DENSITY , CRYSTAL STRUCTURE , SYNTHESIS , LAYERS , HIGH TEMPERATURE , SODIUM , HIGH PRESSURE , ATOMS , CESIUM , X RAYS , THREE DIMENSIONAL , ALUMINUM , SILICON , PHOSPHATES , MOLECULAR SIEVES , ARSENATES


Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Crystallography


Distribution Statement : APPROVED FOR PUBLIC RELEASE