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Bis[4,4,5,5-tetra-methyl-2-(pyridin-2-yl-?(2)N)imidazoline-1-oxyl 3-oxide-?O]tris-(nitrato-?(2)O,O')terbium(III).

ABSTRACT: The title compound, [Tb(NO(3))(3)(C(12)H(16)N(3)O(2))(2)], was prepared from the nitroxide radical ligand 4,4,5,5-tetra-methyl--2-(pyridin-2-yl)-imidazoline-1-oxyl-3-oxide and Tb(III) nitrate. The Tb(III) ion adopts a doubly-capped square-anti-prismatic coord-ination environment defined by three chelating nitrate anions and two N,O-bidentate nitronyl nitroxide radical ligands. Weak C-H?O hydrogen bonds connect the molecules into a three-dimensional framework. The title structure is isotypic with the Ho analogue [Li (2012 ?). Acta Cryst. E68, 550].

SUBMITTER: Li DJ

PROVIDER: S-EPMC3515104 | biostudies-literature | 2012 Nov

REPOSITORIES: biostudies-literature

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Bis[4,4,5,5-tetra-methyl-2-(pyridin-2-yl-κ(2)N)imidazoline-1-oxyl 3-oxide-κO]tris-(nitrato-κ(2)O,O')terbium(III).

Li Dong-Jiao DJ

Acta crystallographica. Section E, Structure reports online 20121010 Pt 11

The title compound, [Tb(NO(3))(3)(C(12)H(16)N(3)O(2))(2)], was prepared from the nitroxide radical ligand 4,4,5,5-tetra-methyl--2-(pyridin-2-yl)-imidazoline-1-oxyl-3-oxide and Tb(III) nitrate. The Tb(III) ion adopts a doubly-capped square-anti-prismatic coord-ination environment defined by three chelating nitrate anions and two N,O-bidentate nitronyl nitroxide radical ligands. Weak C-H⋯O hydrogen bonds connect the molecules into a three-dimensional framework. The title structure is isotypic with ...[more]

PMID: 23284331

Similar Datasets

Tris-(nitrato-?(2)O,O')bis[4,4,5,5-tetra-methyl-2-(pyridin-2-yl-?N)imidazoline-1-oxyl 3-oxide-?O]holmium(III).

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Project description:In the title compound, C(15)H(21)N(2)O(4), the nitronyl nitroxide unit displays a twisted conformation. The crystal structure is stabilized by non-classical C-H⋯O and C-H⋯π hydrogen bonds, which build up a three-dimensional network.

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Project description:The title compound, [Co(C(7)H(5)O(2))(2)(C(12)H(16)N(3)O(2))(2)(H(2)O)(2)], was obtained from a conventional solvent evaporation method. The complex mol-ecule is centrosymmetric, so pairs of equivalent ligands lie trans to each other in a slightly distorted octa-hedral CoN(2)O(4) geometry. The Co(II) ion is coordinated by the pyridine N atoms from NITpPy ligands [NITpPy is 4,4,5,5-tetra-methyl-2-(pyridin-4-yl)imidazoline-1-oxyl 3-oxide), water O atoms and two monodentate benzoate O atoms. The complex mol-ecules are connected by O-H?O hydrogen bonds between water mol-ecules and benzoate ligands, forming chains parallel to [100]. ?-? stacking inter-actions between the benzoate ligands with centroid-centroid distances of 3.752?(2)?Å connect the chains into layers parallel to (10-1).

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Project description:In the title compound, [Ni(C(5)H(7)O(2))(2)(C(12)H(16)N(3)O(2))], the Ni(II) cation is hexa-coordinated by four O and two N atoms, showing a slightly distorted octa-hedral geometry. The Ni(II) cation lies on an inversion centre, as a consequence of which the asymmetric unit comprises one half-mol-ecule. The four O atoms belonging to two pentane-2,4-dionate ligands lie in the equatorial plane and two pyridyl N atoms occupy the axial coordination sites.

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Bis[2,4-penta-nedionato(1-)]bis-[4,4,5,5-tetra-methyl--2-(4-pyrid-yl)-imidazoline-1-oxyl 3-oxide]manganese(II).

Project description:In the title compound, [Mn(C(5)H(7)O(2))(2)(C(12)H(16)N(3)O(2))], the manganese(II) cation (site symmetry ) is hexa-coordinated by four O and two N atoms in a distorted trans-MnN(2)O(4) octa-hedral geometry. The four O atoms belonging to two 2,4-penta-nedionate anions lie in the equatorial plane and the two N atoms occupy the axial coordination sites.

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