5,6-Diphenyl-3-(3-pyrid-yl)-1,2,4-triazine.
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ABSTRACT:
SUBMITTER: Jian FF
PROVIDER: S-EPMC2979911 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:The asymmetric unit of the crystal structure of the title compound, [Sn(C(7)H(6)Cl)(2)Cl(2)(C(20)H(14)N(4))], contains two independent mol-ecules. Each Sn(IV) atom is chelated by the bipyridine-like N-heterocycle and exists in a distorted trans-C(2)SnCl(2)N(2) octa-hedral coordination environment. One chloro-benzyl substituent is disordered in each mol-ecule in 0.5:0.5 and 0.778 (2):0.222 (2) ratios.
| S-EPMC2969832 | biostudies-literature
Project description:The title compound, C21H16N4, obtained under standard Suzuki cross-coupling conditions, is a model compound in the synthesis and biological activity evaluation of new aza-analogues of sildenafil containing a pyrazolo-[4,3-e][1,2,4]triazine system. An N-H?N intra-molecular hydrogen bond involving the amino-benzene system and the 1,2,4-triazine moiety helps to establish a near coplanar orientation of the rings with a dihedral angle of 12.04?(4)°, which is believed to be necessary for the biological activity of sildenafil analogues. The 1,2,4-triazine ring is slightly distorted from planarity [r.m.s deviation = 0.0299?(11)?Å] and forms dihedral angles of 58.60?(4) and 36.35?(3)° with the pendant phenyl rings. The crystal packing features bifurcated N-H?(N,N) hydrogen bonds linking screw-axis-related mol-ecules into chains parallel to the [010] direction and ?-? inter-actions, with a centroid-centroid separation of 3.8722?(7)?Å and a slippage of 1.412?(3)?Å. The crystal studied was a nonmerohedral twin with a ratio of 0.707?(2):0293?(2).
| S-EPMC3588826 | biostudies-other
Project description:The asymmetric unit of the title compound, [Ag(C(5)H(8)N(4))(3)](CF(3)O(3)S)·C(5)H(8)N(4), contains two cations, two anions and two uncoordinated 3-amino-5,6-dimethyl-1,2,4-triazine (admt) ligands. It was prepared from the reaction of silver trifluoro-methane-sulfonate and admt in a 2:3 molar ratio. Both silver(I) ions are bonded to three admt mol-ecules via their 2-position triazine N atoms in almost regular trigonal-planar geometries. Three intra-molecular N-H⋯N hydrogen bonds between adjacent admt mol-ecules in each cation help to maintain their overall near planarities (r.m.s. deviations for the 28 non-H atoms = 0.139 and 0.153 Å). In the crystal, numerous N-H⋯N, N-H⋯O, C-H⋯O, C-H⋯N and C-H⋯F hydrogen-bonding interactions link the components into a three-dimensional network.
| S-EPMC3246953 | biostudies-literature
Project description:BackgroundFor the development of properties in molecular crystals, such as electrical conductivities, magnetic properties, or non-linear optical properties, not only the electronic properties of molecules themselves matter, but also the molecular arrangements in the crystals are very important. Therefore, the design of the crystal structures and the control of molecular arrangements have attracted much attention in recent years. Among various ligands, triazine moieties have been especially interesting because of their biological, pharmacological and medicinal properties.ResultsCrystal structure of 5-Methoxy-5,6-diphenyl-4,5-dihydro-2H-1,2,4-triazine-3-thione is Monoclinic, which consists of space group P21/c with a = 9.699(1), b = 8.500(1), c = 18.044(2) Å, β = 101.290(7)° and Z = 4, R1 = 0.0371 and wR2 = 0.1008 with 2456 reflections (I > 2σ(I)). Intermolecular H bonds between NH groups are acting as donors and S atoms as acceptors. There are also shorted face-to-face as well as edge to face π-π stacking interactions between the parallel aromatic rings. The behavior of solvatochromic of the mentioned compound that involved interhydrogen bonding was investigated by studying its electronic absorption spectra in pure organic solvents of different characters.ConclusionsThe crystal structure of C16H15N3OS, shows the expected face-to-face π-π stacking interactions between aromatic rings of the neighbor chains in this compound. The centroid-centroid distance between the aromatic rings is 3.325 Å. It was found that the monomer of the ligand 5-Methoxy-5,6-diphenyl-4,5-dihydro-2H-1,2,4-triazine-3-thione, further extends into 3D networks via hydrogen bonding and pi-pi stacking interactions. The solvatochromic behavior of the title compound was also investigated by studying its spectra in a selection of different organic solvents. While progressing from the non-polar solvent to the polar one, the main intense band at 310 nm, which is due to the π-π* transition, was red shifted by 13 nm. Thus, the title compound showed positive solvatochromic behavior.
| S-EPMC3750551 | biostudies-literature
Project description:In the centrosymmetric dinuclear title complex, [Cu(2)(C(5)H(6)O(4))(2)(C(20)H(14)N(4))(2)(H(2)O)(2)], the Cu atom displays a distorted square-pyramidal coordination environment with the basal plane occupied by two 5,6-diphenyl-3-(pyridin-2-yl)-1,2,4-triazine N atoms and two O atoms from different glutarate dianions, while a water mol-ecule is located at the apical position. Of the two water H atoms, one is engaged in an intra-molecular O-H?O hydrogen bond, whereas the second is engaged in an inter-molecular O-H?O hydrogen bond. The intermolecular hydrogen bonds lead to the formation of a chain along [010].
| S-EPMC3379125 | biostudies-literature
Project description:The title compound, C(19)H(17)ClN(4), was obtained from the reaction of 3-chloro-5,6-diphenyl-1,2,4-triazine with isobutyronitrile in the presence of lithium diisopropyl-amide as an unexpected product of covalent addition of isobutyronitrile carbanion to the C-5 atom of the 1,2,4-triazine ring. The 2,5-dihydro-1,2,4-triazine ring is essentially planar (r.m.s. deviation = 0.0059?Å) and the 5- and 6-phenyl substituents are inclined to its mean plane with dihedral angles of 89.97?(4) and 55.52?(5)°, respectively. Intra-molecular C-H?N inter-actions occur. In the crystal, mol-ecules related by a c-glide plane are linked into zigzag chains along [001] by N-H?N hydrogen bonds.
| S-EPMC3379491 | biostudies-literature
Project description:In the title mol-ecule, C(17)H(12)N(6), the 2-pyridyl rings in the 3- and 4-positions and the 3-pyridyl ring in the 5-position make dihedral angles of 29.78?(16), 67.06?(16) and 32.97?(16)°, respectively, with the triazole group. The dihedral angle between the two 2-pyridyl rings is 65.72?(15)°. The dihedral angles between the 3-pyridyl ring and the two 2-pyridyl rings in the 3- and 4-positions are 61.28?(15) and 63.11?(15)°, respectively. In the crystal, C-H?? and ?-? inter-actions [centroid-centroid distance = 3.6248?(19)?Å] link the mol-ecules, forming a two-dimensional network.
| S-EPMC3089253 | biostudies-literature
Project description:In the mol-ecule of the title compound, C(19)H(15)N(5), the dihedral angles formed by the plane of the triazole ring with those of the 2-pyridyl, 4-pyridyl and p-tolyl rings are 28.12 (10), 34.62 (10) and 71.43 (9)°, respectively. The crystal structure is consolidated by C-H⋯π hydrogen-bonding inter-actions and by π-π stacking inter-actions, with a centroid-centroid distance of 3.794 (4) Å.
| S-EPMC2969765 | biostudies-literature
Project description:The title compound, C(28)H(27)N(5)O, was synthesized using palladium cross-coupling amination of 3-bromo-5,6-diphenyl-1,2,4-triazine with 2-[(4S)-4-tert-butyl-4,5-dihydro-1,3-oxazol-2-yl]aniline. The oxazoline ring is almost planar, with a maximum atomic deviation of 0.023 (5) Å. The phenyl rings make dihedral angles of 29.0 (1) and 54.6 (1)° with the triazine ring while the benzene ring makes a dihedral angle of 0.6 (1)° with the oxazoline ring. The conformation of the mol-ecule is influenced by strong intra-molecular N-H⋯N and weak C-H⋯N hydrogen bonds. In the crystal, screw-axis related mol-ecules are linked into supra-molecular chains by inter-molecular C-H⋯O hydrogen bonds. π-π stacking is observed between the oxazoline and triazine rings of adjacent mol-ecules, with a centroid-centroid distance of 3.749 (2) Å.
| S-EPMC3052057 | biostudies-literature
Project description:In the centrosymmetric binuclear title complex, [Cu?(C?H?O?)?(C??H??N?)?(H?O)?] or [Cu?(PDPT)?(C?H?O?)?(H?O)?] (PDPT = 3-(2-pyrid-yl)-5,6-diphenyl-1,2,4-triazine, the Cu atom displays a distorted square-pyramidal coordination environment with the basal plane occupied by two PDPT N atoms and two O atoms from different adipate dianions while a water mol-ecule is located at the apical position. Of the two water H atoms, one participates in an intra-molecular hydrogen bond whereas the second participates in an inter-molecular hydrogen bond, which leads to the formation of a chain along [010].
| S-EPMC3393177 | biostudies-literature