ABSTRACT
The title compound, [Dy2(C8H7O2)6(C12H8N2)2], forms binuclear complexes, viz. di-mu-4-methylbenzoato-kappa4O:O'-bis[bis(4-methylbenzoato-kappa2O,O')(1,10-phenanthroline-kappa2N,N')dysprosium(III)] tetra-mu-4-methylbenzoato-kappa8O:O'-bis[(4-methylbenzoato-kappa2O,O')(1,10-phenanthroline-kappa2N,N')dysprosium(III)]. There are two independent binuclear complexes in the asymmetric unit, both of which are centrosymmetric. In one, the Dy(III) ions are linked by two bridging 4-methylbenzoate groups, while in the other, the Dy(III) ions are linked by four bridging 4-methylbenzoate groups. The remaining 4-methylbenzoate groups and 1,10-phenanthroline units coordinate to just one metal ion in bidentate modes.
ABSTRACT
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.
ABSTRACT
Each La3+ ion in the title complex, tetra-micro-2-fluorobenzoato-kappa10 O:O';O:O,O';O:O';O,O':O'-bis[aqua(4,4'-bipyridine-kappaN)(2-fluorobenzoato-kappaO)lanthanum(II)], [La(C7H4FO2)6(C10H8N2)2(H2O)2], is coordinated by six O atoms from the carboxylate groups of five 2-fluorobenzoate ligands, one O atom from a water molecule and one N atom from a 4,4'-bipyridine molecule, thus forming a dimeric molecule. An infinite one-dimensional dimeric supramolecular chain is formed via intermolecular hydrogen bonds.
