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Bis(pentane-2,4-dionato)bis-[2-(4-pyrid-yl)-4,4,5,5-tetra-methyl-imidazoline-1-oxyl 3-oxide]nickel(II).

ABSTRACT: 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.

SUBMITTER: Hao L

PROVIDER: S-EPMC2961770 | biostudies-literature | 2008 Jun

REPOSITORIES: biostudies-literature

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Bis(pentane-2,4-dionato)bis-[2-(4-pyrid-yl)-4,4,5,5-tetra-methyl-imidazoline-1-oxyl 3-oxide]nickel(II).

Hao Lujiang L Mu Chunhua C Kong Binbin B

Acta crystallographica. Section E, Structure reports online 20080625 Pt 7

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. ...[more]

PMID: 21202806

Similar Datasets

Bis(pentane-2,4-dionato-κO,O')bis-[4,4,5,5-tetra-methyl-2-(4-pyridyl)-imidazoline-1-oxyl 3-oxide-κN]manganese(II).

Project description:The title compound, [Mn(C(5)H(7)O(2))(2)(C(12)H(16)N(3)O(2))(2)], is isostructural with its Ni(II)-containing analogue [Hao, Mu & Kong (2008 ▶). Acta Cryst. E64, m957]. The asymmetric unit comprises one-half of the mol-ecule and the Mn(II) ion is located on an inversion centre. The coordination geometry around the Mn(II) ion is slightly distorted octa-hedral, comprised of four O and two N atoms, in which the four O atoms in the equatorial plane come from two pentane-2,4-dionate ligands and the two N atoms in the axial coordination sites from 4,4,5,5-tetra-methyl-2-(4-pyrid-yl)imidazoline-1-oxyl 3-oxide.

| S-EPMC2961987 | biostudies-literature

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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.

| S-EPMC2959951 | biostudies-literature

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Bis(nitrato-κO)bis-[4,4,5,5-tetra-methyl-2-(5-methyl-1H-imidazol-4-yl-κN)-2-imidazoline-1-oxyl 3-oxide-κO]nickel(II).

Project description:In the centrosymmetric mononuclear title complex, [Ni(NO(3))(2)(C(11)H(17)N(4)O(2))(2)], the Ni(II) atom displays a distorted octa-hedral coordination geometry and is six-coordinated by two N,O-bidentate nitronyl nitroxide radical ligands and two monodentate nitrate anions.

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Pyridinium tetra-kis-(1,1,1-trifluoro-pentane-2,4-dionato)dysprosate.

Project description:In the anion of the title compound, (C(5)H(6)N)[Dy(C(5)H(4)F(3)O(2))(4)], the central metal ion, Dy(3+), is coordinated by four bidentate 1,1,1-trifluoro-pentane-2,4-dionate (TAA) ligands, forming an approximate square-anti-prismatic configuration. The pyridin-ium cation is connected to the complex ion by an N-H?O hydrogen bond and electrostatic inter-actions in the crystal. There are two kinds of disorder in the structure, one involving rotational disorder of a CF(3) group [occupancy ratio 0.560?(15):0.440?(15)] and the other involving an exchange between a CF(3) group and CH(3) group within a given bidentate ligand (occupancy ratio 0.64:0.36).

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4,4,5,5-Tetra-methyl-2-(4-pyridinio)-2-imidazoline-1-oxyl-3-oxide perchlorate.

Project description:The crystal structure of the title compound, C(12)H(17)N(3)O(2) (+)·ClO(4) (-), consists of 4,4,5,5-tetra-methyl-2-(4-pyridinio)imidazoline-1-oxyl-3-oxide radical cations and perchlorate anions. Both the cation and the Cl atom of the anion are located on the same twofold rotation axis, and the crystal structure shows the average structure for the radical cation. The five-membered ring assumes a half-chair conformation. The cation links with the anion via N-H⋯O hydrogen bonding.

| S-EPMC2977742 | biostudies-literature

Diazido-bis-[4,4,5,5-tetra-methyl-2-(1,3-thia-zol-2-yl)-2-imidazoline-1-oxyl 3-oxide-?N,O]nickel(II).

Project description:In the title compound, [Ni(N(3))(2)(C(10)H(14)N(3)O(2)S)(2)], the Ni(II) atom lies on an inversion center and adopts a distorted trans-NiO(2)N(4) octa-hedral geometry, coordinated by two N,O-bidentate 4,4,5,5-tetra-methyl-2-(5-methyl-imidazol-4-yl)-2-imidazoline-1-oxyl 3-oxide nitronyl nitroxide radical ligands and two monodentate azide anions.

| S-EPMC3009139 | biostudies-other

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).

Project description:In the title compound, [Ho(NO(3))(3)(C(12)H(16)N(3)O(2))(2)], the Ho(III) ion is ten-coordinated in a distorted bicapped square-anti-prismatic environment by two N,O-bidentate nitronyl nitroxide radical ligands and three O,O'-bidentate nitrate anions. Complex mol-ecules are connected by C-H?O hydrogen bonds into a three-dimensional network.

| S-EPMC3344306 | biostudies-literature

Potassium bis-(1,1,1,5,5,5-hexa-fluoro-pentane-2,4-dionato)bis-(4,4,4-trifluoro-1-phenyl-butane-1,3-dionato)europate(III).

Project description:In the crystal structure of the title complex, K[Eu(C(5)HF(6)O(2))(2)(C(10)H(6)F(3)O(2))(2)], the Eu(III) ion is in a slightly distorted square-anti-prismatic coordination geometry which is defined by eight O atoms of the anionic ?-diketone ligands. The two K(+) ions lie on crystallographic inversion centers. The Eu-O bond distances are in the range 2.294?(5)-2.413?(5)?Å. The crystal used was a non-merohedral twin, the ratio of the twin domains being 0.5236?(5):0.4764?(5).

| S-EPMC3006768 | biostudies-literature

Bis(pentane-2,4-dionato-?O,O')(1,10-phenanthroline-?N,N')cobalt(II).

Project description:In the title compound, [Co(C(5)H(7)O(2))(2)(C(12)H(8)N(2))], the Co(II) cation lies on a twofold rotation axis and is coordinated by four O atoms from two acetyl-acetonate (acac) ligands and two N atoms from a 1,10-phenanthroline (phen) ligand in a slightly distorted octa-hedral environment, with Co-O bond lengths of 2.0565?(11) and 2.0641?(11)?Å and Co-N bond lengths of 2.1630?(12)?Å. In the crystal, there are no significant hydrogen-bonding or ?-? inter-actions.

| S-EPMC3238622 | biostudies-literature

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