4,6-Bis(diphenylphosphanyl)-2,8-dimethylphenoxathiin dichloromethane monosolvate
نویسندگان
چکیده
منابع مشابه
6,7,8,14,15,16-Hexaphenyldibenzo[c,gh]naphtho[3,2,1,8-pqra]tetraphene-5,13-dione dichloromethane monosolvate
The main mol-ecule of the title compound, C(66)H(38)O(2)·CH(2)Cl(2), is centrosymmetric, the asymmetric unit is composed of two half-mol-ecules, located on inversion centers, and a mol-ecule of dichloro-methane. The large π-conjugated fused polycyclic system including eight six-membered rings is nearly planar, with r.m.s. deviations of 0.2114 and 0.2081 Å in the two independent mol-ecules.
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In the title compound, C18H23N5O4·CH2Cl2, the di-chloro-methane solvent mol-ecule is disordered over two sets of sites in a 0.630 (13):0.370 (13) ratio. The dihedral angle between the uracil and phenyl rings is 30.2 (1)°. In the crystal, the principal inter-actions are N-H⋯O hydrogen bonds, which link uracil units across centres of symmetry, forming eight-membered rings with an R (2) 2(8) graph...
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The title 20-crown-6 unit, C(28)H(30)Br(2)O(6)·CH(2)Cl(2), consisting of three benzo groups and triethyl-ene glycol was prepared from the reaction of 1,2,4,5-tetra-kis-(bromo-meth-yl)benzene and bis-phenol in the presence of sodium hydride. In the crystal, one O atom of the central ethyl-ene glycol in the triethyl-ene glycol unit exhibits an exo conformation as a result of intra-molecular C-H⋯O...
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This paper represents an in-depth treatment of the chain inflation scenario. We fully determine the evolution of the universe in the model, the necessary conditions in order to have a successful inflationary period, and the matching with the observational results regarding the cosmological perturbations. We study in great detail, and in general, the dynamics of the background, as well as the me...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2012
ISSN: 1600-5368
DOI: 10.1107/s1600536812009920