نتایج جستجو برای: bidentate ligand

تعداد نتایج: 109079  

Journal: :Dalton transactions 2007
Tetsuaki Fujihara Yasushi Obora Makoto Tokunaga Yasushi Tsuji

Rh(III) complexes with a bidentate N-heterocyclic carbene ligand bearing flexible dendritic frameworks have been synthesized and fully characterized by X-ray crystallographic analysis, NMR measurements and theoretical calculations.

Journal: :Chemical communications 2008
Jian-Yong Zhang Ai-Ling Cheng Qi Yue Wei-Wei Sun En-Qing Gao

The assembly of the asymmetric bis(bidentate) 2-pyrimidinecarboxylate ligand with Cd(II) produces a metal-organic framework with the RHO zeolitic topology, while 5-(2'-pyrimidyl)tetrazolate with Cd(II) leads to square grid networks.

Journal: :Chemistry Letters 2021

The Huynh electronic parameter (HEP) is a modern alternative method to determine ligand donor strengths by 13C NMR spectroscopy of metal NHC complexes containing the interest. Using HEP, properties numerous classical Werner-type and organometallic ligands have been evaluated thus far. Moreover, it has extended HEP2, which provides means measure bidentate chelators. This Highlight Review covers ...

Journal: :Chemical communications 2008
Xiao-Yan Chen Claire Marchal Yaroslav Filinchuk Daniel Imbert Marinella Mazzanti

Six bidentate building blocks have been used to form a tripodal ligand with a flexible C3 symmetric spacer to direct the assembly of large octametallic clusters covalently linked to form a 1-D highly luminescent terbium tube-like polymer.

2013
Hui Wang Xue-Song Zhao Jun-Shan Luo Yu-Peng Tian

In the title compound, [ZnI2(C34H31N3)], the Zn(II) atom is four-coordinated by two I atoms and the pyridine N atoms from the bidentate 6'-phenyl-2,2'-bi-pyridine ligand in a distorted tetra-hedral geometry.

Journal: :Angewandte Chemie 2006
Weicheng Zhang Xumu Zhang

The development of new effective chiral ligands is fundamental to asymmetric hydrogenation. Over recent decades, many excellent bisphosphine ligands have been reported for highly enantioselective hydrogenation reactions. However, the modification of a desired structural motif of most bidentate ligands is impeded by multistep synthesis. Recently, this situation has been partially remedied by the...

Journal: :Inorganic chemistry 2002
Sudeep Bhattacharyya Suman Mukhopadhyay Satyabrata Samanta Timothy J R Weakley Muktimoy Chaudhury

Vanadium(IV) and -(III) complexes of a tetradentate N(2)OS Schiff base ligand H(2)L [derived from methyl 2-((beta-aminoethyl)amino)cyclopent-1-ene-1-dithiocarboxylate and salicylaldehyde] are reported. In all the complexes, the ligand acts in a bidentate (N,O) fashion leaving a part containing the N,S donor set uncoordinated. The oxovanadium(IV) complex [VO(HL)(2)] (1) is obtained by the reacti...

Journal: :European Journal of Organic Chemistry 2023

Herein, we report a ruthenium‐catalyzed ketone directed ortho‐arylation wherein the addition of bidentate NC‐type ligand, most effectively 2‐(o‐tolyl) pyridine, significantly enhances C‐H arylation reaction. Various aryl‐alkyl ketones, including cyclic, aliphatic, and heterocyclic ones, are competent substrates, arylboronic acid esters were used as aryl sources. However, substitution with OMe C...

Journal: :Bulletin of the Chemical Society of Nigeria 2023

The objective of this research work is to compare the findings two techniques synthesis (solid state and solution based synthesis) in order know whether results are similar or not also determine if introduction metal ion increase decrease activity drug. From spectral studies, it revealed that ligand act as bidentate which coordinated central through carbonyl acid ester. elemental analysis data ...

2009
Jie-Qiang Wu Qiong-Hua Jin Ke-Yi Hu Cun-Lin Zhang

The structure of the title complex, [Ag(C(12)H(8)N(2))(C(18)H(15)P)]CF(3)SO(3), is based on a distorted trigonal-planar N(2)P coordination of the Ag(I) ion, provided by two N atoms of the bidentate phenanthroline ligand and one P atom of the triphenyl-phosphine ligand. The phenanthroline ligand and one phenyl ring of the triphenyl-phosphine ligand almost lie in one plane (maximum deviation = 0....

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