Powder diffraction of [Co(NH_3)_5CO_3]NO_3·1/2H_2O and [Co(NH_3)+4CO_3]NO_3·1/2H_2O

摘要

Two compounds, [Co(NH_3)_5CO_3]NO_3·1/2H_2O (labeled A) and [Co(NH_3)_4CO_3]NO_3·1/2H_2O (labeled B), were obtained and characterized by X-ray powder diffraction. The samples were indexed using the programs TREOR90 and DICVOL91. In a monoclinic setting, the cell parameters are a=7.6661(3) A, b=9.6212(3) A, C=7.0725 (4) A, β=106.261 (4)°, V=500.78 A~3, M_20=36, F_30=65 (0.0106, 44) for A and a=10.5623 (5) A, b=22.7304 (18) A, c=7.5174(5) A, β=91.350(5)°, V=1804.31 A~3, M_20=36, F_30=82 (0.0071, 52) for B. The space group is probably P2_1 /m(11) for A and P2_1(14) for B according to their reflection conditions.