1. Piperazinium tetraaquadi-μ-citrato-dinickelate(II).
- Author
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Hai-Yan Song, Chang-Cang Huang, Jian-Hai Luo, Xi-He Huang, and Dong-Sheng Liu
- Subjects
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PIPERAZINE , *COORDINATION compounds , *PHYSICAL & theoretical chemistry , *SYMMETRY (Physics) , *CRYSTALLOGRAPHY - Abstract
The title complex, (C4H12N2)[Ni2(C6H5O7)2(H2O)4], was synthesized under solvothermal conditions. Both cation and anion possess crystallographically imposed inversion symmetry. The citrate ion acts as a quadridentate ligand, coordinating through the hydroxyl and two carboxylate O atoms to one nickel atom, and bridging the second metal centre through the remaining carboxylate group. The coordination around each NiII atom is completed to distorted octahedral by the O atoms of two water molecules. The crystal structure is stabilized by intra- and intermolecular O—H...O and N—H...O hydrogen-bonding interactions. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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