Neutronen- und Rontgenbeugungsuntersuchungen an Pulvern und Einkristallen von Strukturverwandten des Berliner Blaus: CsMn~(II)Cr~(III)(CN_6) centre dot D_2O, NMe_4Mn~(II) (Cr_(0.06)Mn_(0, 94)~(III)(CN)_6 centre dot 8H_2O, NMe_4Mn~(II)Co~(III)(CN)_6 c

摘要

The results of a Rietveld refinement of CsMnCr(CN)_6 centre dot D_2O neutron powder data (a = 1084.3 (1) pm, F43m, Z = 4) and of a neutron single crystal structure refinement of tetragonal NMe_4Mn~(II) (Cr_(0, 06)Mn_(0, 94))~(III)(CN)_6) centre dot 8H_2O (a = 1065.8 (21), C = 1064.6 (26) PM, P4, Z = 2) at ambient temperature are reported. Single crystal X-ray analyses of the isostructural octahydrate NMe_4MnCo(CN)_6 centre dot 8H_2O (a = 1062.1 (1), c = 1046.2 (1) pm) and of gel-grown crystals of cubic Mn_3~(II)[Mn~(III)(CN)_6]_2 centre dot 15H_2O (a = 1062.6 (3)pm, Fm3m, Z = 4/3) and Cd_3[Fe(CN)_6]_2 centre dot 15H_2O (a = 1067.7 (3)pm) were performed as well. The latter "Prussian Blues" are highly disordered and intermediate with respect to cyano-bridging between the above three-dimensional cesium and one-dimensional tetramethylammonium compounds.