(E)-{[But-2-ene-1,4-diylbis(oxy)]bis(4,1-phenylene)}bis(phenylmethanone)
نویسندگان
چکیده
The title mol-ecule, C(30)H(24)O(4), lies about an inversion center located at the mid-point of the central C=C bond. The diphenyl-methanone unit adopts an all-trans conformation. The dihedral angle between the adjacent rings is 53.57 (4)°.
منابع مشابه
1,1′-{[1,4-Phenylenebis(methylene)]bis(oxy)bis(4,1-phenylene)}diethanone
The centroid of the central aromatic ring of the title mol-ecule, C(24)H(22)O(4), is located on an inversion center. The dihedral angle between the central and terminal benzene rings is 75.00 (7)°. In the crystal, mol-ecules are linked through C-H⋯O hydrogen bonds into chains along [121]. The chains are connected into layers via C-H⋯π inter-actions.
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In the title compound, C(24)H(16)N(2)O(6), the dihedral angles between the central 4,5-dicyano-1,2-phenyl-ene unit [maximum deviation from planarity = 0.014 (4) Å] and the pendant benzene rings are 73.62 (5) and 84.08 (6)°.
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The title compounds {systematic names (E)-[diazene-1,2-diylbis(3,1-phenyl-ene)]bis-(di-methyl-silanol) and (E)-[diazene-1,2-diylbis(4,1-phenyl-ene)]bis-(di-methyl-silanol)}, both of the sum formula C16H22N2O2Si2, were obtained by transmetallation of the respective bis-stannylated azo-benzenes with di-chloro-dimethyl-silane and esterification followed by hydrolysis. The asymmetric unit of 3,3'-d...
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عنوان ژورنال:
دوره 68 شماره
صفحات -
تاریخ انتشار 2012