Preparation and properties of tantalum imido complexes and their reactions with alkynes. Coordination control through multiple metal-ligand bonding

1989 ◽  
Vol 28 (20) ◽  
pp. 3860-3868 ◽  
Author(s):  
Yuan Wei Chao ◽  
Pamela A. Wexler ◽  
David E. Wigley
Keyword(s):  
Coordination Control ◽  
Imido Complexes ◽  
Metal Ligand

Study of metal-ligand multiple bonding in osmium and iridium imido complexes: evidence for the cyclopentadienyl-imido analogy

1992 ◽  
Vol 11 (12) ◽  
pp. 4221-4225 ◽  
Author(s):  
David S. Glueck ◽  
Jennifer C. Green ◽  
Richard I. Michelman ◽  
Ian N. Wright
Keyword(s):  
Multiple Bonding ◽  
Imido Complexes ◽  
Metal Ligand

Coordination Control of Networked Euler-Lagrange Systems with Possible Switching Topology

2014 ◽  
Vol 39 (7) ◽  
pp. 1003-1010 ◽  
Author(s):  
Hai-Bo MIN ◽  
Zhi-Guo LIU ◽  
Yuan LIU ◽  
Shi-Cheng WANG ◽  
Yan-Li YANG
Keyword(s):  
Switching Topology ◽  
Coordination Control

An Overview on Coordination Control Problem of Multi-agent System

2012 ◽  
Vol 38 (10) ◽  
pp. 1557 ◽  
Author(s):  
Hai-Bo MIN ◽  
Yuan LIU ◽  
Shi-Cheng WANG ◽  
Fu-Chun SUN
Keyword(s):  
Control Problem ◽  
Multi Agent System ◽  
Coordination Control ◽  
Agent System ◽  
Multi Agent

ESTIMATING THE STABILITY OF METAL–LIGAND BONDING IN CARBOXYL-CONTAINING POLYMER COMPLEXES BY IR SPECTROSCOPY

2020 ◽  
Vol 61 (12) ◽  
pp. 1876-1887
Author(s):  
T. V. Berestova ◽  
K. N. Nosenko ◽  
O. V. Lusina ◽  
L. G. Kuzina ◽  
E. I. Kulish ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Polymer Complexes ◽  
The Stability ◽  
Metal Ligand

A Solvent-Dependent and Electrochemically Controlled Self-Assembling/Disassembling System

2003 ◽  
Vol 68 (9) ◽  
pp. 1647-1662 ◽  
Author(s):  
Valeria Amendola ◽  
Massimo Boiocchi ◽  
Yuri Diaz Fernandez ◽  
Carlo Mangano ◽  
Piersandro Pallavicini
Keyword(s):  
Equilibrium Mixture ◽  
Bidentate Ligand ◽  
Molecular Structures ◽  
The Self ◽  
Molar Ratio ◽  
Crystal And Molecular Structures ◽  
Self Assembling ◽  
Irreversible Oxidation ◽  
Irreversible Reduction ◽  
Metal Ligand

The bis-bidentate ligand R,S-1,2-diphenyl-N,N'-bis(2-quinolinemethylidene)ethane-1,2-diamine (ligand 4), containing two (iminomethyl)quinoline moieties separated by a cis-1,2-diphenylethylene spacer, forms stable complexes with both CuI and CuII. With CuII, the monomeric 1:1 complex [CuII(4)]2+ is obtained both in CH3CN and CH2Cl2. With CuI and overall 1:1 metal/ligand molar ratio, an equilibrium mixture is obtained in CH3CN, consisting of [CuI(4)2]+, [CuI2(4)2]2+ and [CuI2(4)(CH3CN)4]2+. The preponderant species is the two-metal one-ligand "open" complex [CuI2(4)(CH3CN)4]2+, in which each Cu+ cation is coordinated in a tetrahedral fashion by one (iminomethyl)quinoline unit and by two CH3CN molecules. Precipitation from the equilibrium mixture yields only crystals of [CuI2(4)(CH3CN)4](ClO4)2·2CH3CN, whose crystal and molecular structures have been determined. On the other hand, in the poorly coordinating CH2Cl2 solvent, only the dimeric helical [CuI2(4)2]2+ complex is obtained, when the overall metal/ligand 1:1 molar ratio is chosen. Addition of large quantities of acetonitrile to solutions of [CuI2(4)2]2+ in dichlorometane results in the formation of [CuI2(4)(CH3CN)4]2+, i.e. in the solvent-driven disassembling of the CuI helicate. While electrochemistry in CH3CN is poorly defined due to the presence of more than one CuI species, cyclic voltammetry experiments carried out in CH2Cl2 revealed a well defined behavior, with irreversible oxidation of [CuI2(4)2]2+ and irreversible reduction of [CuII(4)]2+ taking place at separate potentials (∆E ≈ 700 mV). Irreversibility and separation of the redox events are due to the self-assembling and disassembling processes following the reduction and oxidation, respectively.

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