catena-Poly[europium(III)-tri-micro-2,3-dimethoxybenzoato]. 
The title compound, [Eu(C(9)H(9)O(4))(3)](n) or [Eu(2,3-DMOBA)(3)](n), where 2,3-DMOBA is 2,3-dimethoxybenzoate, is an infinite one-dimensional non-centrosymmetric coordination polymer.  The unique Eu(III) atom is bridged by six carboxylate ligands; it is ennea-coordinated and has a distorted tricapped trigonal prism geometry.  The Eu-O distances are in the range 2.315 (3)-2.959 (5) A.