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The asymmetric unit of the title compound, [Tb(2)(C(3)H(7)NO(2))(4)(H(2)O)(8)](ClO(4))(6), contains a dinuclear cation and six perchlorate anions, one of which is disordered. In the cation, the four l-alanine mol-ecules are present in their zwitterionic form and bridge two Tb(3+) ions through their carboxyl-ate O atoms. Each Tb atom is also coordinated by four water mol-ecules in a square-anti-prismatic geometry. In the crystal structure, the cations and anions are held together via inter-molecular O-H⋯O and N-H⋯O hydrogen bonds.

Tetrakis-μ-L-alanine-κ8O:O′-bis[tetraaquaterbium(III)] hexaperchlorate

Tetrakis-μ-L-alanine-κ⁸O:O′-bis[tetraaquaterbium(III)] hexaperchlorate