Crystal and Molecular Structures of Barium cis(NO2)-trans(N)-Bis(glycinato)dinitrocobaltate(III) Hydrate [Ba(H2O)4][Co(Gly)2(NO2)2]2 · 1.43H2O

Abstract

Crystals of [Ba(H2O)4][Co(Gly)2(NO2)2]2 · 1.43H2O (a=8.1917(6) A, b=8.4440(4) A, c=19.444(1) A, β=98.189(9)°, Z=2, space group P2/n) contain infinite strips of alternating axially symmetric [Ba(H2O)4]2+ fragments and two dinitro-bis(glycinato)cobaltate(III) ions. In addition to four oxygen atoms of water molecules, the nearest environment of Ba includes six oxygen atoms of the carboxyl groups of four anions, two of which are also coordinated by the cobalt atoms (Ba-O, 2.77–3.01 A). The nitrite ions do not interact with the Ba2+ ions.