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Tetra-kis(?-6-hydr-oxy-1-naphthoato)bis-[(6-hydr-oxy-1-naphthoato)(1,10-phenanthroline)europium(III)] dihydrate.

ABSTRACT: The title complex, [Eu(2)(C(11)H(7)O(3))(6)(C(12)H(8)N(2))(2)]·2H(2)O, has a centrosymmetric binuclear cage structure in which the two Eu(III) ions are both nine-coordinated and bridged by 6-hy-droxy-1-naphthoate (L) ligands, with an Eu? Eu separation of 4.1594?(4)?Å. The remaining coordination sites are occupied by two N atoms from one 1,10-phenanthroline (phen) and two O atoms from an L ligand. The six 6-hydr-oxy-1-naphthoate groups coordinate each Eu(III) atom in three different ways, namely ?(2)-?(1):?(1)-bridging, ?(1)-?(1):?(1)-chelating, and ?(2)-?(1):?(2)-chelating/bridging modes. Adjacent discrete dinuclear units are linked into a two-dimensional sheet parallel to (011) by inter-molecular O-H?O hydrogen-bonding inter-actions. The sheets are cross-linked by water mol-ecules, forming a three-dimensional network. In addition, ?-? stacking inter-actions, with a centroid-centroid separation of 3.547?(2)?Å are observed.

SUBMITTER: Liu CS 

PROVIDER: S-EPMC2972167 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature

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Tetra-kis(μ-6-hydr-oxy-1-naphthoato)bis-[(6-hydr-oxy-1-naphthoato)(1,10-phenanthroline)europium(III)] dihydrate.

Liu Chun-Sen CS   Hu Min M   Zhang Qiang Q  

Acta crystallographica. Section E, Structure reports online 20091114 Pt 12

The title complex, [Eu(2)(C(11)H(7)O(3))(6)(C(12)H(8)N(2))(2)]·2H(2)O, has a centrosymmetric binuclear cage structure in which the two Eu(III) ions are both nine-coordinated and bridged by 6-hy-droxy-1-naphthoate (L) ligands, with an Eu⋯ Eu separation of 4.1594 (4) Å. The remaining coordination sites are occupied by two N atoms from one 1,10-phenanthroline (phen) and two O atoms from an L ligand. The six 6-hydr-oxy-1-naphthoate groups coordinate each Eu(III) atom in three different ways, namely  ...[more]

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