Acta Cryst. (2006). E62, m3272-m3274  [ doi:10.1107/S1600536806044631 ]

Barium di--hydroxo-bis[(nitrilotriacetato)chromium(III)] hexahydrate

H. G. Visser

Abstract: The title compound, Ba[Cr₂(C₆H₆NO₆)₂(OH)₂]·6H₂O, is contains two discrete Cr(nta)OH units (nta^3- is nitrilotriacetate) in the asymmetric unit, each generating a centrosymmetric dimer with two hydroxo bridges. The ten-coordinate Ba²⁺ cation provides a link between dimeric units. Each Cr^III ion is in a distorted octahedral environment and coordinated by two bridging hydroxo O atoms, plus an N atom and three carboxylate O atoms of the nta^3- ligand. The important geometrical parameters are Cr-N = 2.0716 (19) and 2.0779 (19) Å, Cr-O = 1.9421 (17)-1.9900 (17) Å, and O-Cr-O = 162.85 (7)-176.90 (7)°.

Online 10 November 2006

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