First X-ray crystal structure of cation [cis-Co(en)2(H2O)Cl]2+: Synthesis, spectroscopic and X-ray structural study of [cis-Co(en)2(H2O)Cl](C6H5SO3)2·H2O

A new cobalt(III) complex salt, [cis-Co(en)2(H2O)Cl](C6H5SO3)2 · H2O] (I) has been synthesized and characterized by single crystal X-ray structure determination and NMR spectroscopy. This is a first report of the cobalt(III) cation in cis-configuration. The crystal lattice of the complex salt is stabilized by electrostatic forces of attraction and hydrogen bonding interactions.

Graphical abstractA new cobalt(III) complex salt, [cis-Co(en)2(H2O)Cl](C6H5SO3)2, has been synthesized and characterized by single crystal X-ray structure determination. This is a first structural report of the cation [Co(en)2(H2O)Cl]2+ in cis-configuration. The cations and anions are associated in chains by strong NH⋯O hydrogen bonds. The crystal lattice is stabilized by extensive hydrogen bonding besides coulombic forces of attraction.Figure optionsDownload full-size imageDownload as PowerPoint slide