3,9-Bis(2,4-dichlorophenyl)-2,4,8,10-tetraoxaspiro[5.5]undecane
نویسندگان
چکیده
In the title compound, C(19)H(16)Cl(4)O(4), the two halves of the mol-ecule are related by a crystallographic twofold rotation axis passing through the central spiro-C atom. The two non-planar six-membered heterocycles both adopt chair conformations, and the dihedral angle between the two benzene rings is 76.6 (1)°. In the crystal structure, inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains along the c axis.
منابع مشابه
3,9-Bis(2-chlorophenyl)-2,4,8,10-tetraoxaspiro[5.5]undecane
The complete mol-ecule of the title compound, C(19)H(18)Cl(2)O(4), is generated by a crystallographic twofold axis that passes through the spiro C atom. The 1,3-dioxane ring adopts a chair conformation and the phenyl substituent occupies an equatorial site.
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In the title compound, C(21)H(22)N(2)O(8), both of the nonplanar six-membered heterocycles adopt chair conformations. The dihedral angle between the terminal benzene rings is 58.22 (11)°. Weak inter-molecular C-H⋯O inter-actions are observed in the crystal structure.
متن کاملrac-3,9-Bis(3-chlorophenyl)-2,4,8,10-tetraoxaspiro[5.5]undecane
In the title compound, C(19)H(18)Cl(2)O(4), the two non-planar six-membered heterocycles passing through the spiro-C atom both adopt chair conformations, and the dihedral angle between the two benzene rings is 7.2 (1)°. In the crystal, the enanti-omers with R and S configurations are generated by the symmetry elements of the centrosymmetric space group, forming a racemic crystal. Inter-molecula...
متن کامل3,9-Di-tert-butyl-2,4,8,10-tetraoxaspiro[5.5]undecane
The title compound, C(15)H(28)O(4), was prepared by the condensation of pivalaldehyde with penta-erythritol. In the crystal, the two halves of the mol-ecule are related by a crystallographic twofold rotation axis passing through the central spiro-C atom. The two non-planar six-membered heterocycles both adopt chair conformations with the two tert-butyl groups both located in the equatorial posi...
متن کامل3,9-Di-1-naphthyl-2,4,8,10-tetraoxaspiro[5.5]undecane
In the title compound, C(27)H(24)O(4), the 1,3-dioxane rings have chair conformations. The mol-ecule has non-crystallographic twofold rotation symmetry. The dihedral angle between the naphthalene ring systems is 17.96(4)° In the crystal structure, weak inter-molecular C-H⋯π inter-actions contribute to the crystal packing.
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