2-(1,3-Dibenzylimidazolidin-2-ylidene)malononitrile
نویسندگان
چکیده
In the title mol-ecule, C(20)H(18)N(4), the imidazolidine ring makes dihedral angles of 86.74 (2) and 81.18 (3)° with the two phenyl rings. In the absence of classical inter-molecular inter-actions, the crystal packing is stabilized by van der Waals forces.
منابع مشابه
2-{3-Cyano-5,5-dimethyl-4-[4-(pyrrolidin-1-yl)buta-1,3-dienyl]-2,5-dihydrofuran-2-ylidene}malononitrile dichloromethane solvate
The structure of the title compound, C(18)H(18)N(4)O·CH(2)Cl(2), was solved using data collected from a multiple crystal (note high R factors). The crystal structure is dominated by two bifurcated attractive C-H⋯N(cyano) inter-actions.
متن کامل2-{3-[1-(3,4-Dichlorophenyl)ethyl]-1,3-thiazolidin-2-ylidene}malononitrile
In the title compound, C(14)H(11)Cl(2)N(3)S, the thia-zole ring is in an envelope conformation with the -CH(2)- group bonded to the S atom forming the flap. The crystal structure is stabilized by weak inter-molecular C-H⋯Cl and C-H⋯N hydrogen bonds.
متن کامل(±)-2-{3-[1-(2,4-Difluorophenyl)ethyl]-1,3-thiazolidin-2-ylidene}malononitrile
In the title compound, C(14)H(11)F(2)N(3)S, the heterocyclic five-membered ring has an envelope conformation. Although the mol-ecule is chiral, the compound is a racemate (R/S). There is a weak inter-molecular C-H⋯π inter-action but no classical hydrogen bonds are observed in the crystal structure.
متن کامل2-{3-Cyano-5,5-dimethyl-4-[4-(piperidin-1-yl)buta-1,3-dienyl]-2,5-dihydrofuran-2-ylidene}malononitrile
The title compound, C(19)H(20)N(4)O, crystallizes as twinned crystals containing two independent mol-ecules which pack into a three-dimensional matrix via several C-H⋯N(cyano) inter-actions, with a C⋯N range of 3.324 (8)-3.568 (8) Å and C-H⋯N angles in the range 147-166°.
متن کامل2-(4-Oxo-3-phenyl-1,3-thiazolidin-2-ylidene)malononitrile
In the title compound, C12H7N3OS, the essentially planar thia-zole ring (r.m.s. deviation = 0.022 Å) forms dihedral angles of 84.88 (9) and 1.8 (3)° with the phenyl ring and the -C(CN)2 group (r.m.s. deviation = 0.003 Å), respectively. The mol-ecule has approximate local Cs symmetry. In the crystal, molecules are linked via C-H⋯N hydrogen bonds, forming chains propagating along [101]. The cryst...
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