4,4′-Dibromo-2,2′-[m-phenylenebis(nitrilomethanylylidene)]diphenol
نویسنده
چکیده
The title compound, C(20)H(14)Br(2)N(2)O(2), is a dibasic tetra-dentate Schiff base and reveals intra-molecular O-H⋯N hydrogen bonds between the hy-droxy O atoms and the imino N atoms. The dihedral angle between the central and terminal benzene rings is 39.7 (1)°. In the crystal, the compound is disposed about a crystallographic mirror plane parallel to the ac plane passing through the two central C atoms. The mol-ecules are stacked in columns along the c axis through π-π inter-actions, the shortest centroid-centroid distance being 3.872 (3) Å.
منابع مشابه
4,4′-Dibromo-2,2′-[octane-1,8-diylbis(nitrilomethanylylidene)]diphenol
The title compound, C(22)H(26)Br(2)N(2)O(2), has a centre of inversion that is located in the middle of the octyl chain; the chain displays an extended zigzag conformation. A short intra-molecular O-H⋯N hydrogen bond occurs.
متن کامل6,6′-Di-tert-butyl-4,4′-dimethyl-2,2′-[1,2-phenylenebis(nitrilomethanylylidene)]diphenol
In the title mol-ecule, C(30)H(36)N(2)O(2), the dihedral angles between the central benzene ring and the two benzene rings of the butyl-salicylaldimine groups are 14.3 (2) and 40.6 (2)°. There are two strong intra-molecular O-H⋯N hydrogen bonds which form S(6) rings. The crystal studied was a non-merohedral twin with refined components of 0.270 (4) and 0.730 (4).
متن کامل{4,4′-Dibromo-6,6′-dimethoxy-2,2′-[1,2-phenylenebis(nitrilomethanylylidene)]-κ4 O 1,N,N′,O 1′}nickel(II)
In the title complex, [Ni(C(22)H(16)Br(2)N(2)O(4))], the Ni(II) ion is coordinated by two N atoms and two O atoms of a tetra-dentate Schiff base ligand, forming a slightly distorted square-planar coordination environment. The dihedral angle between the two bromo-substituted benzene rings is 10.1 (3)°.
متن کامل4,4′-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 کامل6,6′-Diethoxy-2,2′-[4-methyl-1,2-phenylenebis(nitrilomethanylylidene)]diphenol acetonitrile monosolvate
The title solvated Schiff base compound, C25H26N2O4·CH3CN, possesses an O2N2 donor set affording a potentially tetra-dentate metal complex ligand. The central ring makes dihedral angles of 6.7 (3) and 48.4 (2)° with the pendant rings. Intra-molecular N-H⋯O hydrogen-bonding inter-actions are observed.
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عنوان ژورنال:
دوره 67 شماره
صفحات -
تاریخ انتشار 2011