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Bis(2,6-dihy-droxy-benzoato-?O,O)(nitrato-?O,O')bis-(1,10-phenanthroline-?N,N')gadolinium(III).

ABSTRACT: In the mononuclear title complex, [Gd(C(7)H(5)O(3))(2)(NO(3))(C(12)H(8)N(2))(2)], the Gd atom is in a pseudo-bicapped square-anti-prismatic geometry formed by four N atoms from two chelating 1,10-phenanthroline (phen) ligands and by six O atoms, four from two 2,6-dihy-droxy-benzoate (DHB) ligands and the other two from a nitrate anion. ?-? stacking inter-actions between phen-DHB [centroid-centroid distances = 3.5334?(18) and 3.8414?(16)?Å] and phen-phen [face-to-face separation = 3.4307?(17)?Å] ligands of adjacent complex molecules stabilize the crystal structure. Intra-molecular O-H?O hydrogen bonds are observed in the DHB ligands.

SUBMITTER: Zheng J

PROVIDER: S-EPMC3011409 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature

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Bis(2,6-dihy-droxy-benzoato-κO,O)(nitrato-κO,O')bis-(1,10-phenanthroline-κN,N')gadolinium(III).

Zheng Junjia J Jin Hongxiao H Ge Hongliang H

Acta crystallographica. Section E, Structure reports online 20101120 Pt 12

In the mononuclear title complex, [Gd(C(7)H(5)O(3))(2)(NO(3))(C(12)H(8)N(2))(2)], the Gd atom is in a pseudo-bicapped square-anti-prismatic geometry formed by four N atoms from two chelating 1,10-phenanthroline (phen) ligands and by six O atoms, four from two 2,6-dihy-droxy-benzoate (DHB) ligands and the other two from a nitrate anion. π-π stacking inter-actions between phen-DHB [centroid-centroid distances = 3.5334 (18) and 3.8414 (16) Å] and phen-phen [face-to-face separation = 3.4307 (17) Å] ...[more]

PMID: 21589291

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Bis(2,6-dihy-droxy-benzoato-κO,O)(nitrato-κO,O')bis-(1,10-phenanthroline-κN,N')neodymium(III).

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Bis(μ-2,4-dihy-droxy-benzoato-κO:O')bis-[aqua-(2,4-dihy-droxy-benzoato-κO)(1,10-phenanthroline-κN,N')cadmium(II)].

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Project description:In the mononuclear title complex, [Dy(C(7)H(5)O(4))(2)(NO(3))(C(12)H(8)N(2))(2)], the Dy(III) atom is in a distorted bicapped square-anti-prismatic geometry formed by four N atoms from two chelating 1,10-phenanthroline (phen) ligands, four O atoms from two 2,6-dihy-droxy-benzoate (DHB) ligands and two O atoms from a nitrate anion. Inter-molecular ?-? stacking inter-actions between the phen and DHB ligands [centroid-centroid distances = 3.542?(4) and 3.879?(4)?Å] and between the pyridine and benzene rings of adjacent phen ligands [centroid-centroid distance = 3.751?(4)?Å] stabilize the crystal structure. Intra-molecular O-H?O hydrogen bonds are observed in the DHB ligands.

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Project description:In the title compound, [Cu(C(7)H(5)O(3))(NO(3))(C(14)H(12)N(2))], the Cu(II) ion is five-coordinated in a slightly distorted square-pyramidal geometry by one O atom of a nitrate anion, two O atoms of a 4-hydroxy-benzoate anion, and two N atoms from a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand. In the crystal structure, inversion-related mol-ecules are linked into dimers by O-H⋯O hydrogen bonds. The packing is further stabilized by π-π inter-actions involving the benzene rings of the dmphen and hydroxy-benzoate units, with centroid-centroid distances of 3.4930 (14) or 3.5727 (14) Å.

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Project description:In the title compound, [Ho(NO(3))(3)(C(12)H(8)N(2))(2)], the ten-coordinate Ho(III) ion is chelated by four N atoms from two phenanthroline (phen) ligands and six O atoms from three bidentate nitrate groups. The environment around the Ho atom can be described as a distorted bicapped square anti-prism. Two phenanthroline ligands form a dihedral angle of 43.72 (13)°. Short inter-molecular distances between the centroids of the six-membered rings [3.6887 (14)-3.8374 (16) Å] indicate the existence of π-π inter-actions, which link the mol-ecules into stacks extended in the [10] direction. The crystal packing is further stabilized by weak inter-molecular C-H⋯O hydrogen bonds.

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