title: catena-Poly[europium-tri-mu-4-methyl-benzoato].
abstract: Each Eu3+ ion in the title compound, catena-poly[europium(III)-tri-mu-4-methylbenzoato-O:O,O';O:O,O';O,O':O'], [[Eu(C8H7O2)3]3]n, is coordinated by nine O atoms, and three Eu atoms form a trimeric unit. These trimeric units are linked by bridging-chelating carboxylates to form an infinite one-dimensional polymer chain.
authors.affiliation: Department of Chemistry, Capital Normal University, Beijing 100037, People's Republic of China.
authors.forename: Q H
authors.initials: QH
authors.lastname: Jin
authors.forename: X
authors.initials: X
authors.lastname: Li
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Zou
authors.forename: K B
authors.initials: KB
authors.lastname: Yu