Crystal and molecular structure of potassium cis-bis(iminodiacetato)cobaltate(III)–2·5 water

Abstract

The crystal structure of the title compound has been determined from diffractometer data by Patterson and Fourier methods and refined by least-squares techniques to R 5·4% for 1884 observed reflections. Crystals are orthorhombic, space group Pbcn, with a= 18·366(9), b= 10·143(8), c= 15·317(9)Å, Z= 8. Co-ordination around Co^III is octahedral and involves two iminodiacetate ions which behave as terdentate ligands through the nitrogen atom [Co–N 1·937(4), 1·946(4)Å] and two oxygen atoms of the carboxylic groups [Co–O 1·875(4), 1·883(4), 1·896(4), 1·902(4)Å].