catena-Poly[[(1,10-phenanthroline-κ²N,N′)praseodymium(III)]-di-μ-phenoxyacetato-κ⁴O:O′-[(1,10-phenanthroline-κ²N,N′)praseodymium(III)]-di-μ-phenoxyacetato-κ⁴O:O′-di-μ-phenoxyacetato-κ³O,O′:O;κ³O:O,O′]

Abstract

The title complex, [Pr(2)(C(8)H(7)O(3))(6)(C(12)H(8)N(2))(2)](n), which has an inversion centre midway between the two Pr(III) atoms of the structural unit, forms a one-dimensional polymer bridged alternately by either two bidentate, or two bidentate and two terdentate, phenoxy-acetate carboxyl-ate groups. Each Pr(III) atom is thus nine-coordinated by two N atoms of a 1,10-phenanthroline ligand and seven O atoms from six phenoxy-acetate ligands. The coordination geometry at the Pr(III) atom is distorted tricapped trigonal prismatic. One phenyl ring is disordered over two positions; the site occupancy factors are ca 0.6 and 0.4.