2,2′-[5-Bromo-o-phenylenebis(nitrilomethylidyne)]diphenol
نویسندگان
چکیده
A new tetra-dentate unsymmetrical Schiff base, C(20)H(15)BrN(2)O(2), has been synthesized from 4-bromo-o-phenyl-enediamine and salicylaldehyde in refluxing ethanol. The dihedral angles between the two hydroxy-phenyl rings and the bromo-o-phenyl-enediiminatoin group are 68.6 (1) and 8.7 (1)°; the dihedral angle between the two hydroxy-phenyl rings is 70.3 (1)°. There are two relatively strong intra-molecular of O-H⋯N hydrogen bonds.
منابع مشابه
5,5′-Dimethoxy-2,2′-[4,5-dimethyl-o-phenylenebis(nitrilomethylidyne)]diphenol
In the crystal structure of the title compound, C(24)H(24)N(2)O(4), the dihedral angles between the central and the two outer benzene rings are 48.12 (8) and 21.44 (8)°. Intra-molecular O-H⋯N hydrogen bonding generates S(6) rings.
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In the title Schiff base, C(22)H(20)N(2)O(2), the benzene ring forms dihedral angles of 53.92 (1) and 3.62 (1)° with the two salicylaldimine groups. There are two strong O-H⋯N intra-molecular hydrogen bonds. The crystal packing is stabilized by weak inter-molecular C-H⋯O hydrogen bonds and π-π stacking inter-actions (average distance 3.39 Å).
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In the title compound, C(24)H(24)N(2)O(4)·H(2)O, the dihedral angles between the central benzene ring and the two outer benzene rings of the Schiff base are 65.06 (9) and 3.02 (9)°. Strong intra-molecular O-H⋯N hydrogen bonds generate S(6) ring motifs. The H atoms of the water mol-ecule act as donors in the formation of bifurcated O-H⋯(O,O) inter-molecular hydrogen bonds with the O atoms of the...
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In the title compound, [Ni(C(22)H(17)BrN(2)O(4))]·CH(3)OH, the Ni(II) ion is in a slightly distorted square-planar geometry involving an N(2)O(2) atom set of the tetra-dentate Schiff base ligand. The asymmetric unit contains one nickel complex and one methanol solvent mol-ecule. The dihedral angle between the aromatic ring planes of the central aromatic ring and other two aromatic rings are 10....
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The title compound, [Cu(2)(C(20)H(14)N(2)O(2))(2)]·2C(3)H(7)NO, consists of a centrosymmetric dimer composed of two copper(II) ions and two tetra-dentate salphen ligands {H(2)salphen is 2,2'-[o-phenyl-enebis(nitrilo-methyl-idyne)]diphenol}, and two dimethyl-formamide solvent mol-ecules. The Cu(II) atom is bonded to two N imino atoms and three phenolate O atoms of salphen. One deprotonated pheno...
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