Acta Cryst. (2003). E59, m900-m902  [ doi:10.1107/S1600536803019408 ]

A nickel(II) fumarate complex with o-phenanthroline

J.-F. Ma, J. Yang and J.-F. Liu

Abstract: In the dinuclear and centrosymmetric title complex, -fumarato-bis[aquabis(1,10-phenanthroline)nickel(II)] fumarate hexadecahydrate, [Ni₂(C₄H₂O₄)(C₁₂H₈N₂)₄(H₂O)₂](C₄H₂O₄)·16H₂O or [Ni₂(phen)₄L(H₂O)₂]L·16H₂O, where phen = 1,10-phenanthroline and L^2- = fumarate, the nickel(II) cation is six-coordinated by two O atoms, one from a water molecule and the other from one end of a bridging L^2- anion, and four N atoms from two bidentate phen ligands. Each of the two independent L^2- anions is located about an inversion centre. Interestingly, one L^2- anion is bridging and the other acts as a counter-ion. The [Ni₂(phen)₄L(H₂O)₂]²⁺ cations, water molecules and L^2- anions are connected through complex hydrogen-bonding interactions to form a three-dimensional structure.

Online 18 September 2003

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