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1,3-Bis(2-ethoxy-phen-yl)triazene.

ABSTRACT: The title compound, C(16)H(19)N(3)O(2), exhibits a trans geometry about the N=N double bond in the triazene unit in the solid state, and individual mol-ecules are close to planar with r.m.s. deviations from planarity of 0.065 Å and 0.242 Å for the two independent molecules in the asymmetric unit. Distinct inter-molecular N-H⋯N hydrogen bonds lead to the formation of dimers with an R(2) (2)(8) graph-set motif. The steric demands of the eth-oxy groups in the ortho position prevent a coplanar arrangement of the two mol-ecules in the dimers and these instead consist of two inter-locked mol-ecules that are related by a non-crystallographic pseudo-twofold rotation axis. Weak C-H⋯π inter-actions between the CH groups and the aromatic phenyl rings also occur.

SUBMITTER: Rofouei MK

PROVIDER: S-EPMC2969009 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1,3-Bis(2-ethoxy-phen-yl)triazene methanol 0.33-solvate.

Project description:There are three independent mol-ecules of 1,3-bis-(2-ethoxy-phen-yl)triazene and a mol-ecule of methanol in the asymmetric unit of the title compound, C(16)H(19)N(3)O(2)·0.33CH(3)OH. Two mol-ecules related by a non-crystallographic pseudo-twofold rotation axis are linked via distinct inter-molecular N-H?N hydrogen bonds, leading to the formation of a dimer with an R(2) (2)(8) graph set. The third mol-ecule is connected to the methanol mol-ecule by O-H?N and N-H?O hydrogen bonds. There are a number of weak C-H?? inter-actions, with H?? distances ranging from 2.74 to 2.89?Å between the C-H groups and the aromatic benzene rings.

| S-EPMC2970393 | biostudies-literature

Low-temperature redetermination of 1,3-bis-(penta-fluoro-phen-yl)triazene.

Project description:The crystal structure of the title compound, (C(6)F(5))(2)N(3)H, is stabilized by N-H?N hydrogen bonding, forming centrosymmetric dimers organized in a herringbone motif. Important geometrical parameters are N-N = 1.272?(2) and 1.330?(2)?Å and N-N-N = 112.56?(15)°. The dihedral angle between C(6)F(5) groups is 21.22?(9)°. The room temperature structure was reported by Leman et al. (1993). Inorg. Chem.32, 4324-4336]. In the current determination, the data were collected to a higher ? angle, resulting in higher precision for the C-C bond lengths(0.001-0.005 versus 0.003?Å).

| S-EPMC3011790 | biostudies-literature

[1,3-Bis(2-ethoxy-phen-yl)triazenido]bromidomercury(II).

Project description:To the central atom of the title compound, [HgBr(C(16)H(18)N(3)O(2))], is attached one bromide ion and a 1,3-bis-(2-ethoxy-phen-yl)triazenide ligand through one O and two N atoms, forming a distorted square-planar geometry around the Hg(II) atom. The mononuclear complexes are linked into centrosymmetric dimers by non-classical inter-molecular C-H?N hydrogen bonds and by weak Hg-?(3)-arene ?-inter-actions [mean distance = 3.434?(3)?Å]. The resulting dimeric units are assembled into zigzag chains by translation along the crystallographic c axis through secondary C-H?? edge-to-face benzene ring inter-actions.

| S-EPMC2970410 | biostudies-literature

[1,3-Bis(2-ethoxy-phen-yl)triazenido]chloridomercury(II).

Project description:In the title compound, [Hg(C(16)H(18)N(3)O(2))Cl], the Hg(II) atom is four-coordinated in a tetra-hedral geometry by two N atoms from the 1,3-chelating and one O atom of a 1,3-bis-(2-ethoxy-phen-yl)triazenido ligand and one terminal chloride ion. The dihedral angle between the aromatic rings is 1.72?(14)°. In the crystal C-H?? stacking inter-actions occur.

| S-EPMC2968604 | biostudies-literature

2,3-Bis(4-ethoxy-phen-yl)quinoxaline.

Project description:The title compound, C(24)H(22)N(2)O(2), was prepared by condensation of 1,2-bis-(4-ethoxy-phen-yl)ethane-1,2-dione and 1,2-diamino-benzene. The asymmetric unit contains one half-mol-ecule, close to a twofold axis. The plane of the quinoxaline ring is twisted with respect to the planes of the two ethoxy-phenyl ring systems, exhibiting dihedral angles of 39.95?(9)°. The crystal packing is dominated by weak C-H?? inter-actions. No classical hydrogen bonds or stacking inter-actions are observed.

| S-EPMC2980160 | biostudies-literature

2-[4-Chloro-3-(4-ethoxy-benz-yl)phen-yl]-1,3-dithiane.

Project description:In the title compound, C(19)H(21)ClOS(2), the dithiane ring adopts a chair conformation. The dihedral angle between the benzene rings is 87.88?(4)°. In the crystal, inversion dimmers linked by pairs of C-H?O inter-actions occur.

| S-EPMC2979625 | biostudies-literature

1,3-Bis(ethoxy-meth-yl)-1H-benzimidazole-2(3H)-thione.

Project description:In the structure of the title compound, C(13)H(18)N(2)O(2)S, mol-ecules are linked together by inter-molecular C-H?S inter-actions into one-dimensional extended chains along the a axis. The crystal packing is further influenced by weak C-H?O inter-actions.

| S-EPMC2979012 | biostudies-literature

2,5-Bis[2-(2-methoxy-ethoxy)phen-yl]-1,3,4-oxadiazole.

Project description:In the title compound, C(20)H(22)N(2)O(5), the central 1,3,4-oxadiazole ring is essentially planar [r.m.s. deviation from the best plane of 0.0011?Å] and makes dihedral angles of 4.10?(3) and 13.32?(4)° with the two benzene rings. In the crystal structure, the packing is stabilized by weak non-classical inter-molecular C-H?N hydrogen bonds, which link the mol-ecules into an extended network.

| S-EPMC2977367 | biostudies-literature

2,2-Bis(3-chloro-methyl-4-ethoxy-phen-yl)propane.

Project description:The title compound, C(21)H(26)Cl(2)O(2), a bis-chloro-methyl derivative of O-ethyl-ated bis-phenol A, exhibits C(2) mol-ecular symmetry. It shows a bent conformation with the two benzene rings nearly perpendicular [dihedral angle = 87.17?(6)°].

| S-EPMC2961668 | biostudies-literature

1,3-Bis(2,6-diisopropyl-phen-yl)imidazolidin-2-yl-idene.

Project description:The title compound, C(27)H(38)N(2), is the first reported free imidazolidin-2-yl-idene carbene with 2,6-diisopropyl-phenyl groups in the 1,3-positions. The five-membered ring adopts a twisted conformation and the dihedral angle between the aromatic rings is 48.81 (6)°. Both isopropyl groups attached to one of the benzene rings are disordered over two sets of sites in 0.74 (2):0.26 (2) and 0.599 (8):0.401 (8) ratios.

| S-EPMC3007848 | biostudies-literature

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