نتایج جستجو برای: tridentate schiff base ligands

تعداد نتایج: 362735  

2009
Farba Bouyagui Tamboura Mohamed Gaye Abdou Salam Sall Aliou Hamady Barry Youssouph Bah

In the title complex, [Cu(C(9)H(9)N(2)O(2))Cl]·2H(2)O, prepared from the Schiff base ligand N'-(2-hydroxy-benzil-idene)aceto-hydrazide and copper(II) chloride, the Cu(II) atom is coord-inated by two O atoms and one N atom from the ligand and by a Cl atom in a distorted square-planar geometry. The two donor O atoms of the tridentate Schiff base ligand are in a trans arrangement. In the crystal s...

2012
Keisuke Kawamoto Takashi Shibahara

In the title compound, [Sn(C(20)H(19)N(2)O(3))Cl(3)], the Sn(IV) ion is surrounded by a tridentate monoanionic Schiff base and by three meridional chloride ions in a six-coordinated distorted octa-hedral geometry. The Sn-Cl bond [2.366 (2) Å] trans to nitro-gen is shorter than the others [2.438 (2) and 2.414 (2) Å]. The N-Sn-N angle [76.19 (11)°] is smaller than the O-Sn-N angle [87.89 (10)°] i...

2010
Lin Bian Lianzhi Li Qingfu Zhang Daqi Wang

The tridentate Schiff base ligand of the title complex, [V(C(15)H(12)N(2)O(4))O(C(12)H(8)N(2))]·C(3)H(7)NO, was derived from the condensation of 2-hy-droxy-1-naphthaldehyde and l-asparagine. The central V(IV) atom is six-coordinated by one oxide O atom, two N atoms from 1,10-phenanthroline and one N atom and two O atoms from the Schiff base ligand in a distorted octa-hedral geometry. In the cry...

2013
Ramadoss Gomathi

Schiff-base ligands are potential anti-cancer, anti-bacterial and anti-viral agents and this activity tends to increase in metal(II) Schiff-base complexes. Some oxindole-Schiff base copper(II) complexes have shown potential antitumor activity towards deferent cells, inducing apoptosis in a process modulated by the ligand. Here, six novel copper(II) complexes with schiff base ligands were isolat...

Journal: :Journal of the American Chemical Society 2005
David J Jones Vernon C Gibson Simon M Green Peter J Maddox Andrew J P White David J Williams

High throughput screening (HTS) of a 205 member Schiff base salicylaldimine ligand library derived from salicylaldehydes bearing bulky ortho-substituents, i.e., 9-anthracenyl, 1,4,5,8-tetramethylanthracenyl or triptycenyl, reacted in-situ with (p-tolyl)CrCl2(thf)3, identified two new classes of highly active chromium based systems for the oligomerization and polymerization of ethylene, respecti...

2012
Horst Elias Helmut Paulus

Helmut Paulus Institut für Physikalische Chemie, Abteilung Strukturforschung, Technisch© Hochschule Darmstadt, Petersenstraße 20, D-0100 Darmstadt Z. Naturforsch. 37b, 1266-1273 (1982); received March 31, 1982 X-ray, UV/VIS Spectra, Tridentate ONN Schiff Base, Copper(II) Complexes, Palladium(II) Complexes The tridentate mono-basic Schiff base N-(2-diethylaminoethyl)salicylaldimine =Hsalen-NEt2 ...

Journal: :Dalton transactions 2010
Dan Liu Qi Zhou Yan Chen Fen Yang Yang Yu Zhan Shi Shouhua Feng

Reactions of MnX(2) meltsalt (X = Cl and ClO(4)) and a quinquedentate Schiff base ligand together with its coligand azides in MeOH produced the unprecedented assembly of novel octa- and hexadecanuclear manganese clusters containing two and four alternant tetrahedral Mn(III)(3)Mn(II) cores bridged by Schiff base ligands and versatile azides groups. The magnetic measurements on both compounds ind...

2013
SUBBAIYAN SATHIYARAJ CHINNASAMY JAYABALAKRISHNAN

A new Schiff base ligands (H2L -H2L 3) was synthesized by the condensation reaction of 4-acyl pyrazolones and 2-benzothiazolyl thiosemicarbazide. The ruthenium(II) Schiff base complexes were prepared by the interaction of the ligands with [RuHCl(CO)(EPh3)2(B)] (E=P/As; B=PPh3/AsPh3/py). They were characterized by elemental analysis, IR, UV-vis, 1H, 13C, and 31P NMR spectral data. The interactio...

2008
Fei Liu Fang Zhang

In the title dinuclear complex, [NiPr(C(19)H(20)N(2)O(4))(NO(3))(3)(CH(3)OH)(2)]·2CH(3)OH, the Ni(II) ion is coordinated by two O atoms and two N atoms of a Schiff base ligand and by two methanol ligands, forming a slightly distorted octa-hedral geometry. The Pr(III) ion is coordinated by six O atoms from three chelating nitrate ligands and four O atoms from a Schiff base ligand, forming a dist...

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