5,5′-Dimethoxy-2,2′-[2,2-dimethylpropane-1,3-diylbis(nitrilomethylidyne)]diphenol
نویسندگان
چکیده
The asymmetric unit of the title Schiff base compound, C(21)H(26)N(2)O(4), consists of four crystallographically independent mol-ecules, viz. A, B, C and D. The A and D, and the B and C mol-ecules are related by a pseudo-inversion centre, and the remaining pairs of mol-ecules differ in the orientations of one of the meth-oxy groups. In each independent mol-ecule, intra-molecular O-H⋯N hydrogen bonds generate two S(6) ring motifs. The dihedral angles between the benzene rings in mol-ecules A, B, C and D are 65.86 (19), 50.41 (19), 68.59 (19) and 50.85 (19)°, respectively. In the crystal structure, mol-ecules are linked by C-H⋯O hydrogen bonds, forming R(2) (2)(8) dimers. In addition, weak C-H⋯π inter-actions are observed.
منابع مشابه
4,4′-Dimethoxy-2,2′-[2,2-dimethylpropane-1,3-diylbis(nitrilomethanylylidene)]diphenol
In the title compound, C(21)H(26)N(2)O(4), the dihedral angle between the substituted benzene rings is 30.47 (15) °. Two strong intra-molecular O-H⋯N hydrogen bonds generate two S(6) ring motifs.
متن کامل{4,4′-Dimethoxy-2,2′-[2,2-dimethylpropane-1,3-diylbis(nitrilomethylidyne)]diphenolato}nickel(II)
In the title complex, [Ni(C(21)H(24)N(2)O(4))], the Ni(II) ion has a slightly distorted square-planar geometry, coordinated by the two N and two O atoms of a new tetra-dentate Schiff base ligand. The dihedral angle between the planes of the two NiNC(3)O chelate rings is 14.37 (12)°.
متن کامل6,6′-Dimethoxy-2,2′-[2,2-dimethylpropane-1,3-diylbis(nitrilomethylidyne)]diphenol
The title Schiff base compound, C(21)H(26)N(2)O(4), exhibits two crystallographically independent mol-ecules in the asymmetric unit with similar conformations. The imino groups are coplanar with the benzene rings; the maximum deviations of the N atoms from the planes comprising the benzene rings and the imino groups are -0.037 (4), 0.013 (4), -0.021 (5), and 0.008 (5) Å. The dihedral angles bet...
متن کامل6,6′-Dimethoxy-2,2′-[pyridine-2,3-diylbis(nitrilomethylidyne)]diphenol
In the title compound, C(21)H(19)N(3)O(4), two intramolecular N-H⋯O hydrogen bonds generate two six-membered rings. The dihedral angles between the central heterocyclic ring and the two pendant rings are 61.5 (2) and 63.5 (1)°.
متن کامل{5,5′-Dimethoxy-2,2′-[2,2-dimethylpropane-1,3-diylbis(nitrilomethanylylidene)]diphenolato}palladium(II)
In the title compound, [Pd(C(21)H(24)N(2)O(4))], the complete mol-ecule is generated by crystallographic mirror symmetry with the Pd and three C atoms lying on the mirror plane. The Pd-O and Pd-N distances are 1.9932 (6) and 2.0029 (7) Å, respectively. The dihedral angle between two benzene rings of the ligand is 79.21 (4)°. In the crystal, C-H⋯O hydrogen bonds link the mol-ecules into layers p...
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