نتایج جستجو برای: schiff bases
تعداد نتایج: 72031 فیلتر نتایج به سال:
The Cu(II) atom of the title complex, [Cu(C(17)H(15)N(2)S(2))(2)], lies on a twofold rotation axis, and is in a distorted tetra-hedral geometry with the two bidentate N(2)S(2) Schiff bases. In the crystal structure, the mol-ecules are inter-connected into chains along the c axis by weak C-H⋯S inter-molecular inter-actions. The crystal packing is further stabilized by C-H⋯π inter-actions.
In the title mononuclear complex, [Co(C(12)H(17)N(2)OS(2))(2)], the Co(II) atom is four-coordinated by two N,O-bidentate Schiff base ligands, resulting in a slightly distorted trans-CoN(2)O(2) square-planar coordination.
In this paper, an efficient method for synthesis of aromatic polyesters containing schiff base units is described by preparation of two polyesters. These polyesters have been prepared by the reaction of terephthaloyl dichloride on Schiff bases derived from p-hydroxybenzyldehyde and 4,4-diamino diphenyl ether, 4,4-diamino diphenyl methane. The Polymers were characterized by IR, CHNS, thermal...
Mutually unbiased bases (MUBs) play a key role in many protocols in quantum science, such as quantum key distribution. However, defining MUBs for arbitrary high-dimensional systems is theoretically difficult, and measurements in such bases can be hard to implement. We show experimentally that efficient quantum state reconstruction of a high-dimensional multipartite quantum system can be perform...
Article history: Received 15 April 2014 Received in revised form 22 May 2014 Accepted 25 October 2014 Available online 10 November 2014
In the title compound, [Cu(C(17)H(15)NO(3))(C(3)H(4)N(2))], the Cu(II) atom is four-coordinated by two O atoms and the N atom of the tridentate Schiff base ligand, and one N atom from the imidazole ligand in a distorted square-planar geometry. In the crystal structure, mol-ecules are linked into dimers by inter-molecular N-H⋯O hydrogen bonds.
The title compound, [Zn(C(19)H(13)N(3)O(2))], has been synthesized by the reaction of Zn(ClO(4))(2)·6H(2)O and the tetra-dentate Schiff base ligand 2,2'-[pyridine-3,4-diylbis(nitrilo-methyl-idyne)]diphenol (L). The coordination geometry of the Zn(II) ion is slightly distorted square-planar, formed by two N atoms and two O atoms from the L ligand.
In the title complex, [Zn(C18H10N4O2)(CH4O)], the Zn(2+) cation is located on a mirror plane and is coordinated by a tetradentate Schiff base ligand anion (L (2-)) and a methanol mol-ecule. The Zn(2+) cation is surrounded by two N atoms and two O atoms from L (2-), in a nearly planar configuration, and one methanol O atom, forming a slightly distorted square-pyramidal geometry. The methanol mol...
The asymmetric unit of the title Schiff base compound, C(12)H(15)N(3)O, contains two crystallographically independent mol-ecules, with both existing in an E configuration with respect to the C=N double bonds. In the crystal structure, inter-molecular N-H⋯N and C-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional network.
The title compound, C(17)H(20)N(2)O(3), is a Schiff base, which is found as a zwitterion in the solid state. The geometry around the iminium N atom indicates sp(2)-hybridization. The zwitterion shows a strong intra-molecular N-H⋯O hydrogen-bond inter-action between the iminium N atom and the phenolate O atom.
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