β Scribed by N. Anissimova; R. Glaum
No coin nor oath required. For personal study only.
Single crystals of Ga(PO 3 ) 3 were grown in polyphosphoric acid melts by heating a mixture of Ga 2 O 3 and H 3 PO 4 (350 Β°C, 7 d). The compound belongs to the series of metaphosphates M III (PO 3 ) 3 forming the C-type structure (monclinic, Cc, Z = 12, a = 13.0058( ), b = 18.915(3), c = 9.3105(15) A Γ , b = 126.900(11), 5348 independent reflections (I > 0); 354 variables; 39 atoms in asymetric unit; R1 = 0.048, wR2 = 0.1034). The structure is characterized by a superstructure with tripled monoclinic b-axis. Three crystallographically independent Ga III O 6 octahedra (d(GaΒ±O) = 1.950 A Γ ) are linked by 1 β (PO 3 ) Β± chains.
π SIMILAR VOLUMES
Refinement of the Superstructure of C-Type Chromium(III) Tris( metaphosphate), Cr(PO3)3. -Single crystals of Cr(PO3)3 are obtained during irreversible transport experiments starting with CrPO4, P and I (1323 β 1223 K, Si ampoule). The compound (monoclinic, Cc, Z = 12), which belongs to the M(PO3)3 p
The kinetics of the gas-phase reactions of the OH radical with (C,H,O),PO and (CH30)2P(S)C1 and of the reactions of NO, radicals and O3 with (CH,O),P(S)Cl have been studied at room temperature. Using a relative rate technique, the rate constants determined for the reactions of the OH radical with (C