2-Methyl-3,5,6-triphenyl-2,3-dihydropyrazine
نویسندگان
چکیده
منابع مشابه
2-Methyl-3,5,6-triphenyl-2,3-dihydropyrazine
In the title mol-ecule, C(23)H(20)N(2), the heterocyclic ring adopts a screw-boat conformation, with all substituents equatorial. The phenyl ring at position 3 makes dihedral angles of 78.12 (15) and 72.67 (15)°, respectively, with the phenyl rings at positions 5 and 6; the dihedral angle between the phenyl rings at positions 5 and 6 is 67.32 (14)°. A C-H⋯π inter-action is present in the crysta...
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An extra copy of a rice pistil chitinase gene, termed chip, which is expressed predominantly in floral organs just before anthesis, was introduced into an economically important cultivar of rice (Oryza sativa L. cv. Koshihikari) together with the hygromycin-resistance gene (hph) as a marker gene by co-transformation. Over 100 regenerated rice plants (R0) and their self-pollinated first and seco...
متن کامل4-Methyl-2,4,6-triphenyl-4H-thiopyran
The six-membered thio-pyran ring in the title compound, C(24)H(20)S, adopts a flattened boat conformation, with the S atom displaced by 0.273 (2) Å and the 3-methyl-ene C atom by 0.294 (3) Å from the plane of the other four sp(2)-hydridized C atoms. The methyl group on the methyl-ene carbon lies in a axial position with the phenyl equatorial.
متن کامل2-(4-Fluorophenyl)-1,4,5-triphenyl-1H-imidazole
In the title mol-ecule, C(27)H(19)FN(2), the imidazole ring is essentially planar [maximum deviation = 0.004 (1) Å] and makes dihedral angles of 62.80 (6), 36.98 (6), 33.16 (6) and 46.24 (6)°, respectively, with the substituent rings in the 1-, 2-, 4- and 5-positions. No classical hydrogen bonds are observed in the crystal structure.
متن کامل2,4,5-Triphenyl-1,3,2-dioxaphospholan-2-one
The dioxaphospho-lane ring in the title compound, C(20)H(17)O(3)P, adopts an envelope conformation about one of the ring carbons. The benzene rings of the compound do not form face-to-face π-π inter-actions, instead weak C-H⋯π inter-actions occur between adjacent mol-ecules. The methine H atoms on the dioxaphospho-lane ring form weak C-H⋯O hydrogen bonds to the oxide group of an adjacent mol-ec...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2009
ISSN: 1600-5368
DOI: 10.1107/s1600536809005042