Structures of chromium(III) cyclam complexes. 6. trans-aquahydroxy(1,4,8,11-tetraazacyclotetradecane)chromium(III) dibromide hydrate

The X-ray analysis of the title compound, [Cr(OH)(H 2 O)(C 10 H 24 N 4 )]Br 2 .H 2 O, indicates that the cyclam moiety exists in a chair conformation. The trans-axial O atoms bonded to Cr both carry one well defined H atom, with each oxygen also bearing a partially occupied (50%) H atom. The O-Cr-O bond angle is almost linear [179.6(1)°] and the O...O vector is tilted by 1.2 (2)° from the perpendicular to the CrN 4 plane.