Naser Eltaher Eltayeb

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Copper ion recognition and DNA interaction of a newly synthesized fluorescent Schiff base (HPyETSC) were investigated using UV-vis and fluorescent spectroscopy. Examination using these two techniques revealed that the detection of copper by HPyETSC is highly sensitive and selective, with a detection limit of 0.39 μm and the mode of interaction between(More)
New derivatives of thiosemicarbazone Schiff base with isatin moiety were synthesized L1-L6. The structures of these compounds were characterized based on the spectroscopic techniques. Compound L6 was further characterized by XRD single crystal. The interaction of these compounds with calf thymus (CT-DNA) exhibited high intrinsic binding constant(More)
In the title benzimidazole mononuclear complex, [ZnCl(2)(C(13)H(11)N(3))], the Zn(II) ion is four-coordinated in a distorted tetra-hedral geometry by an imidazole N, an amino N and two Cl atoms. The dihedral angle between the benzimidazole and benzene rings is 9.57 (1)°. In the crystal, mol-ecules are linked by weak N-H⋯Cl hydrogen bonds into layers(More)
In the title complex, [Ni(C(7)H(14)N(4)OS)(2)]Cl(2), the Ni(II) ion is six-coordinated in a distorted octa-hedral geometry by four N atoms from the two imine and two oxime groups, and two S atoms from the thione groups. Two chloride ions complete the asymmetric unit. In the crystal, mol-ecules are linked through N-H⋯Cl and O-H⋯Cl hydrogen bonds into an(More)
In the title complex, [Mn(C(22)H(18)N(2)O(2))Cl]·H(2)O, the Mn(III) center is in a distorted square-pyramidal configuration, with the N(2)O(2) dianionic tetra-dentate Schiff base ligand in the basal plane and the chloride ion in the apical position. The dihedral angle between the two outer phenolate rings of the tetra-dentate ligand is 8.25 (8)°. The(More)
The asymmetric unit of the title compound, tetra-aqua-tetrakis-{μ(3)-6,6'-di-oxido-2,2'-[1,2-phenyl-enebis(nitrilo-methyl-idyne)]diphenolato}octa-zinc(II) dimethyl sulfoxide tetra-solvate dihydrate, [Zn(8)(C(20)H(12)N(2)O(4))(4)(H(2)O)(4)]·4C(2)H(6)OS·2H(2)O, contains one quarter of a Zn(II) octa-nuclear complex with symmetry, one dimethyl sulfoxide(More)
The title compound, 0.75C(15)H(14)N(2)O·0.25C(15)H(14)N(2)O, is a co-crystal of 2-methyl-6-(6-methyl-1H-benzimidazol-2-yl)phenol as the major component and 2-methyl-6-(5-methyl-1H-benz-imidazol-2-yl)phenol as the minor component. The refined site-occupancy ratio is 0.746 (4)/0.254 (4). The conformations of both components are identical except for that of(More)
In the title complex, [Mn(C(22)H(18)N(2)O(4))Cl], the Mn(III) centre is in a distorted square-pyramidal configuration, with the basal plane formed by the N(2)O(2) donors of the tetra-dentate Schiff base dianion; the two phenolate O atoms and the two imine N atoms are each mutually cis. The chloride ion occupies the apical position. The dihedral angle(More)
The mol-ecule of the title compound, [Zn(C(28)H(30)N(2)O(2))(CH(3)COCH(3))], lies across a mirror plane with the Zn(II) ion and the acetone mol-ecule on the mirror plane. The Zn(II) ion is in a five-coordinate distorted square-pyramidal N(2)O(3) environment, with the two imine N and two phenolic O atoms of the tetra-dentate Schiff base dianion in the basal(More)
The asymmetric unit of the title compound, C(20)H(16)N(2)O(4)·CH(3)OH, contains two Schiff base zwitterions and two methanol solvent mol-ecules. The dihedral angles between the central benzene ring and the two outer benzene rings of the Schiff base are 2.57 (7) and 52.30 (7)° in one mol-ecule and 5.83 (7) and 49.82 (7)° in the other mol-ecule.(More)