نتایج جستجو برای: isatin schiff bases

تعداد نتایج: 72718  

2009
Jing Li Handong Yin Liyuan Wen Jichun Cui

In the title compound, [Sn(C(6)H(5))(2)(C(18)H(12)N(2)O(3))], the Sn(IV) atom has a distorted trigonal-bipyramidal geometry. The Schiff base mol-ecule is coordinated to the Sn(IV) atom in a tridentate fashion via the azomethine N atom, the hydr-oxy O atom and the carbonyl O atom. The complex involves an intra-molecular O-H⋯N hydrogen bond.

2013
Amitabha Datta Jack K. Clegg Jui-Hsien Huang Shiann-Cherng Sheu

In the title complex, [Cu(C13H11N2O)(N3)], the Cu(II) cation is four-coordinated by an N2O donor set of the tridentate Schiff base ligand and by the terminal N atom of the azide anion, forming a slightly distorted square-planar configuration.

Journal: :Chemical communications 2009
Jian Jiang Mark J MacLachlan

Conjugated Schiff base macrocycles with wide bores and conformational flexibility bind organic cations in their interiors, and can be used to assemble larger supramolecular structures.

2008
Hoong-Kun Fun Reza Kia Paul R. Raithby

The title compound, C(27)H(19)BrN(4)O, is a mono-anil Schiff base ligand. Three intra-molecular O-H⋯N and N-H⋯N hydrogen bonds involving the hydr-oxy and amino groups generate S(6) and S(5) ring motifs, respectively. In the crystal structure, weak inter-molecular N-H⋯O and C-H⋯O hydrogen bonds together with π-π inter-actions [centroid-centroid distances = 3.628 (3)-3.729 (3) Å] link neighboring...

2013
Koji Kubono Keita Tani Kunihiko Yokoi Teruo Shinmyozu Kenta Goto

In the title linear homo-trinuclear complex, [Cd3(C19H18Cl2N2O2)2(C2H3O2)2], the central Cd(II) atom is located on a centre of inversion and has a distorted octa-hedral coordination geometry formed by four O atoms from two bidentate/tetra-dentate Schiff base ligands and two O atoms from two bridging acetate ligands. The coordination geometry of the terminal Cd(II) atom is square-pyramidal with ...

Journal: :Materials advances 2023

Schiff bases exhibited sensor activity via cyclic voltammetry, colorimetry, and UV-vis study at room temperature. The probes could be employed as a low-cost, ultrasensitive chemo-sensor to detect Cu 2+ Zn in solutions.

Journal: :Bioinorganic chemistry and applications 2006
Har Lal Singh A. K. Varshney

Three bidentate Schiff bases having nitrogen and sulphur donor sequences were prepared by condensing S-benzyldithiocarbazate (NH(2)NHCS(2)CH(2)C(6)H(5)) with heterocyclic aldehydes. The reaction of diphenyltin dichloride with Schiff bases leads to the formation of a new series of organotin(IV) complexes. An attempt has been made to prove their structures on the basis of elemental analyses, cond...

2014
El Hassane Anouar

Phenolic Schiff bases are known as powerful antioxidants. To select the electronic, 2D and 3D descriptors responsible for the free radical scavenging ability of a series of 30 phenolic Schiff bases, a set of molecular descriptors were calculated by using B3P86 (Becke's three parameter hybrid functional with Perdew 86 correlation functional) combined with 6-31 + G(d,p) basis set (i.e., at the B3...

Journal: :Metal-Based Drugs 1999
Zahid H. Chohan

A number of thiazole derived tridentate Schiff-bases (LH) and its metal chelates of the type [M(L)(2)X] where M=Ni(II), Cu(II) and Zn(II), L=substituted salicylaldehyde (5-H, 5-CH(3), 5-OCH(3), 5-NO(2) and 5-Cl) and X=CI have been synthesized and characterized with the help of elemental analyses, conductivity measurements, magnetic moments, UV-Vis, IR and NMR spectral data. An octahedral struct...

2011
Kiran Singh Parvesh Puri Yogender Kumar Chetan Sharma Kamal Rai Aneja

The Schiff bases HL(1-3) have been prepared by the reaction of 5-bromothiophene-2-carboxaldehyde with 4-amino-5-mercapto-3-methyl/propyl/isopropyl-s-triazole, respectively. Organosilicon(IV) and organotin(IV) complexes of formulae (CH(3))(2)MCl(L(1-3)), (CH(3))(2)M(L(1-3))(2) were synthesized from the reaction of (CH(3))(2)MCl(2) and the Schiff bases in 1 : 1 and 1 : 2 molar ratio, where M = Si...

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