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Poly[(acetato-?O,O')aqua-(?(4)-1H-benzimidazole-5,6-dicarboxyl-ato-?N:O,O:O,O:O)praseodymium(III)].

ABSTRACT: In the title complex, [Pr(C(9)H(4)N(2)O(4))(C(2)H(3)O(2))(H(2)O)](n), the Pr(III) ion is coordinated by five O atoms and one N atom from four benzimidazole-5,6-dicarboxyl-ate ligands, two O atoms from an acetate ligand and one water mol-ecule, giving a tricapped trigonal-prismatic geometry. The benzimidazole-5,6-dicarboxyl-ate and acetate ligands connect the Pr(III) ions, forming a layer in the ac plane; the layers are further linked by N-H?O and O-H?O hydrogen bonding and ?-? stacking inter-actions between neighboring pyridine rings [the centroid-centroid distance is 3.467?(1)?Å], assembling a three-dimensional supra-molecular network. The acetate methyl group is disordered over two positions with site-occupancy factors of 0.75 and 0.25.

SUBMITTER: Pan ZY

PROVIDER: S-EPMC2983355 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature

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Poly[(acetato-κO,O')aqua-(μ(4)-1H-benzimidazole-5,6-dicarboxyl-ato-κN:O,O:O,O:O)praseodymium(III)].

Pan Zi-Yu ZY Chen Jin-Hua JH Lin Jian-Fen JF Xu Xuan X Luo Yi-Fan YF

Acta crystallographica. Section E, Structure reports online 20100925 Pt 10

In the title complex, [Pr(C(9)H(4)N(2)O(4))(C(2)H(3)O(2))(H(2)O)](n), the Pr(III) ion is coordinated by five O atoms and one N atom from four benzimidazole-5,6-dicarboxyl-ate ligands, two O atoms from an acetate ligand and one water mol-ecule, giving a tricapped trigonal-prismatic geometry. The benzimidazole-5,6-dicarboxyl-ate and acetate ligands connect the Pr(III) ions, forming a layer in the ac plane; the layers are further linked by N-H⋯O and O-H⋯O hydrogen bonding and π-π stacking inter-act ...[more]

PMID: 21587441

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Poly[[aqua-(μ(5)-1H-benzimidazole-5,6-dicarboxyl-ato)(μ(4)-1H-benzimidazole-5,6-dicarboxyl-ato)dibarium] 4.5-hydrate].

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Project description:In the title mononuclear complex, [Ni(C(9)H(4)N(2)O(4))(H(2)O)(5)]·5H(2)O, the Ni(II) atom is six-coordinated by one N atom from a 1H-benzimidazole-5,6-dicarboxyl-ate ligand and by five O atoms from five water mol-ecules and displays a distorted octa-hedral geometry. Inter-molecular O-H?O hydrogen-bonding inter-actions among the coordinated water mol-ecules, solvent water mol-ecules and carboxyl O atoms of the organic ligand and additional N-H?O hydrogen bonding lead to the formation of a three-dimensional supra-molecular network.

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Poly[diaqua-bis(?(3)-1H-benzimidazole-5,6-dicarboxyl-ato-?N:O,O:O)bis-(?(2)-1H,3H-benzimidazolium-5,6-dicarboxyl-ato-?O,O:O)digadolinium(III)].

Project description:In the title complex, [Gd(2)(C(9)H(4)N(2)O(4))(2)(C(9)H(5)N(2)O(4))(2)(H(2)O)(2)](n), two of the benzimidazole-5,6-dicarboxyl-ate ligands are pro-ton-ated at the imidazole groups. Each Gd(III) ion is coordinated by six O atoms and one N atom from five ligands and one water mol-ecule, displaying a distorted bicapped trigonal-prismatic geometry. The Gd(III) ions are linked by the carboxyl-ate groups and imidazole N atoms, forming a layer parallel to (001). These layers are further connected by O-H?O and N-H?O hydrogen bonds into a three-dimensional supra-molecular network.

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