Acta Cryst. (2005). E61, m2343-m2345  [ doi:10.1107/S160053680503312X ]

catena-Poly[[diaqua(2-chloronicotinato-²O,O')erbium(III)]-di--2-chloronicotinato-⁴O:O']

Z.-Z. Lu, S. Gao and S. W. Ng

Abstract: The asymmetric unit of the title compound, [Er(C₆H₃ClNO₂)₃(H₂O)₂]_n, has two independent disordered 2-chloronicotinate groups, one of which lies on a twofold rotation axis. The group lying on this symmetry element chelates to the water-coordinated Er atom, which also lies on the rotation axis. Two more 2-chloronicotinate groups bridge two diaqua(2-chloronicotinato)erbium species into a linear chain. The Er atom exists in a square-antiprismatic environment made up of O atoms.

Online 19 October 2005

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