The crystal structure of hydridopentaamminerhodium(III) perchlorate, [RhH(NH3)5] [ClO4]3, has been determined by X-ray diffractometric methods. The structure has been refined in the orthorhombic space group D24-P212121 with a = 10.2866 (12), b --- 8.0689 (10), c = 15.0146 (21) å, ρobsd = 2.07 (2) g/cm3, ρcealad = 2.07 g/cm3, and Z = 4, to a final conventional R factor of 0.040 for 1298 reflections above background. The compound consists of discrete octahedral hydridopentaamminerhodium(III) and tetrahedral perchlorate ions. The cations are stacked in zigzag chains of essentially linear Rh-H.N-Rh elements, whose Rh atoms are 6.103 (1) å apart. The ammine group which is directed toward the next cation in the chain is the closest to the Rh atom, with an Rh-N distance of 2.048 (11) å. The other three ammine groups cis to the H ligand have an average Rh-N distance of 2.079 (7) å. The NH3 which is= trans to the H ligand is 2.244 (13) å. from the Rh, so that the H ligand is exerting a pronounced trans effect of 0.165 (15) å. The Rh-H distance is 1.82 (17) å.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry