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2-[4-(2-Hy-droxy-eth-oxy)phenyl]-4,4,5,5-tetra-methyl-2-imidazoline-1-oxyl 3-oxide.

ABSTRACT: In the title compound, C(15)H(21)N(2)O(4), the imidazoline ring displays a twisted conformation. The dihedral angle between the mean plane of the imidazoline ring and the benzene ring is 33.50 (12)°. In the crystal, mol-ecules are connected by O-H⋯O hydrogen bonds, forming a zigzag chain along the c axis. The chains are linked by C-H⋯O and C-H⋯π inter-actions.

SUBMITTER: Jing LL

PROVIDER: S-EPMC3238993 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-[3-Hy-droxy-4-(2-hy-droxy-eth-oxy)phen-yl]-4,4,5,5-tetra-methyl-2-imidazoline-1-oxyl 3-oxide.

Project description:In the title compound, C(15)H(21)N(2)O(5), the imidazoline ring displays a twisted conformation. The mean plane of the imidazoline ring makes a dihedral angle of 22.55?(5)° with the benzene ring. In the crystal, O-H?O and C-H?O hydrogen bonds link the mol-ecules into a layer parallel to the bc plane.

| S-EPMC3254551 | biostudies-literature

2-[2-(2-Hy-droxy-eth-oxy)phen-yl]-4,4,5,5-tetra-methyl-2-imidazoline-1-oxyl 3-oxide.

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.

| S-EPMC3239125 | biostudies-literature

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

Dichloridobis[4,4,5,5-tetra-methyl-2-(5-methyl-1H-imidazol-4-yl-?N)-2-imidazoline-1-oxyl 3-oxide-?O]copper(II).

Project description:In the title complex, [CuCl(2)(C(11)H(17)N(4)O(2))(2)], the Cu(II) ion, lying on an inversion center, is six-coordinated in a distorted octa-hedral [Cu(N(2)O(2)Cl(2))] environment by two N,O-bidentate nitronyl nitroxide radical ligands and two trans-chloride anions. In the imidazoline-1-oxyl-3-oxide unit of the ligand, the four methyl groups and the C atoms to which they are bonded are disordered over two sets of sites, with a refined occupancy ratio of 0.737?(5):0.263?(5).

| S-EPMC3246935 | biostudies-literature

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

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.

| S-EPMC2961770 | biostudies-literature

N'-(3-Eth-oxy-2-hy-droxy-benzyl-idene)-2-hy-droxy-3-methyl-benzohydrazide.

Project description:The title compound, C(17)H(18)N(2)O(4), crystallizes with two independent mol-ecules in the asymmetric unit. The two benzene rings in each mol-ecule make dihedral angles of 7.6?(3) and 3.9?(3)°. Intra-molecular O-H?N and O-H?O hydrogen bonds are present in each mol-ecule. In the crystal, N-H?O hydrogen bonds link the mol-ecules into chains propagating in [010]. The are also a number of C-H?O and ?-? inter-actions present [centroid-centroid distances = 3.874?(4) and 3.904?(3)?Å], that result in the formation of a three-dimensional network.

| S-EPMC3275245 | biostudies-literature

Dimethano-lbis[4,4,5,5-tetra-methyl-2-(5-methyl-imidazol-4-yl)-2-imidazoline-1-oxyl-3-oxide-?O,N]cobalt(II) diperchlorate.

Project description:In the mononuclear title complex, [Co(C(11)H(17)N(4)O(2))(2)(CH(3)OH)(2)](ClO(4))(2), the cobalt(II) atom lies on a symmetry centre and is coordinated by two O,N-bidentate ligands and two trans-arranged O atoms of the methanol mol-ecules in a slightly distorted octa-hedral geometry. In the crystal structure, cations and anions are linked by N-H?O and O-H?O hydrogen bonds into layers parallel to the bc plane.

| S-EPMC2980142 | biostudies-literature

2-[Hy-droxy(2-meth-oxy-phenyl)methyl]acrylonitrile.

Project description:In the title compound, C(11)H(11)NO(2), the mean planes formed by the benzene ring and the C and N atoms of the acryl group are almost orthogonal to each other, with a dihedral angle of 85.7 (1)°. During the structure analysis, it was observed that the unit cell contains large accessible voids, with a volume of 186.9 Å(3), which may host disordered solvent mol-ecules. This affects the diffraction pattern, mostly at low scattering angles. Density identified in these solvent-accessible areas was calculated and corrected for using the SQUEEZE routine in PLATON [Spek (2009 ▶), Acta Cryst. D65, 148-155]. Despite the presence of the hy-droxy group in the mol-ecule, no classical or nonclassical hydrogen bonds are observed in the structure. This may reflect the fact that the O-H group points towards the solvent-accessible void.

| S-EPMC3414923 | biostudies-literature

Poly[(?(3)-rac-5-eth-oxy-carbonyl-6-hy-droxy-6-methyl-4-phenyl-4,5,6,7-tetra-hydro-benzo[c]isoxazol-3-olato)potassium].

Project description:The title compound, [K(C(17)H(18)NO(5))](n), reveals the relative configuration (4R*,5S*,6R*) whereas its crystals are racemic. The cyclo-hexane ring adopts a half-chair conformation and the isoxazole ring has an envelope conformation. The ethyl fragment of the eth-oxy-carbonyl group at position 5 is disordered in a 0.547?(7):0.453?(7) ratio. The K(+) ion is surrounded by five O atoms from three ligands at distances ranging from 2.606?(2) to 3.028?(2)?Å, generating a three-dimensional network. The crystal packing displays inter-molecular O-H?N and O-H?O hydrogen bonds in which the hy-droxy group acts as a double proton donor.

| S-EPMC3120487 | biostudies-literature

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.

| S-EPMC2959951 | biostudies-literature

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