CRYSTAL AND MOLECULAR-STRUCTURE OF LITHIUM-BENZOHYDROXAMATE BENZOHYDROXAMIC-ACID (1 1)-ADDUCT/

The crystal structure of the title compound was determined by single c rystal X-ray diffraction. It consists of molecules of benzohydroxamic acid, its O-deprotonated anions and lithium cations in the 1 : 1 : 1 m olar ratio. Although the molecular geometry of the anion is very simil ar to that of the acid, these units can be unambiguously distinguished since the short hydrogen bond between the OH group of the acid and th e N-bonded oxygen atom of the anion is remarkably asymmetric. This bon d, together with the lithium cations (being surrounded by five oxygens ), links the units into chains running in the crystallographic ab plan e. The coordination polyhedron around Li represents a rare example of an almost undistorted LiO5 square pyramidal arrangement.