Crystal Structure of Methyl 4-Hydroxy-3-nitro-2-(4-nitrophenyl)-5-(1,1,1-triphenyl-.LAMBDA.5-phosphanylidene)-1,3-cyclopentadiene-1-carboxylate
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چکیده
منابع مشابه
Experimental and theoretical studies of Diels–Alder reaction between methyl (Z)-2-nitro-3-(4-nitrophenyl)-2-propenoate and cyclopentadiene
ABSTRACT The Diels-Alder reaction between methyl (Z)-2-nitro-3-(4-nitrophenyl)-2-propenoate and cyclopentadiene yields a mixture of carbodiene Diels-Alder adducts. B3LYP/6-31G(d) simulations indicate that the conversion of addends into methyl (1R*,2S*,3S*,4R*)-2-nitro-3-(4-nitrophenyl)-bicyclo[2.2.1]hept-5-ene-2-carboxylate occurs via two-stage heterodiene Diels-Alder reaction and (in a second ...
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The title compound, C20H27ClN2O3, was obtained via an original synthesis method. The central heterocyclic ring adopts a shallow envelope conformation, with the N atom bearing the cyclo-pentane ring as the flap [deviation from the other atoms = 0.442 (2) Å]. The cyclo-pentane ring adopts a twisted conformation about one of the CN-C bonds: the exocyclic C-N bond adopts an equatorial orientation. ...
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In the title mol-ecule, C13H13N3O2, the planes of the benzene and imidazole rings form a dihedral angle of 7.72 (5)°. In the crystal, mol-ecules are linked by weak C-H⋯N and C-H⋯O hydrogen bonds, forming layers parallel to (100). A weak C-H⋯π inter-action connects these layers into a three-dimensional network. A π-π stacking inter-action, with a centroid-centroid distance of 3.5373 (9) Å, is al...
متن کاملMethyl 2-benzyl-5-[1-(4-methoxyphenyl)-4-oxo-3-phenylazetidin-2-yl]-4-nitro-3-phenylpyrrolidine-2-carboxylate
In the title mol-ecule, C(35)H(33)N(3)O(6), the pyrrolidine ring adopts a twist conformation. The mol-ecules are paired into centrosymmetric dimers by weak inter-molecular C-H⋯O hydrogen bonds. The dimers inter-act further again via C-H⋯O hydrogen bonds and N-H⋯O intramolecular interaction also stabilize the crystal packing.
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ژورنال
عنوان ژورنال: Analytical Sciences: X-ray Structure Analysis Online
سال: 2005
ISSN: 1348-2238
DOI: 10.2116/analscix.21.x125