Cooperative Catalysis of Combined Systems of Transition-Metal Complexes with Lewis Acids: Theoretical Understanding

2016 ◽  
Vol 16 (5) ◽  
pp. 2405-2425 ◽  
Author(s):  
Wei Guan ◽  
Guixiang Zeng ◽  
Hajime Kameo ◽  
Yoshiaki Nakao ◽  
Shigeyoshi Sakaki
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Lewis Acids ◽  
Theoretical Understanding ◽  
Cooperative Catalysis

scholarly journals Coordination Behavior of [Cp″2Zr(µ1:1-As4)] towards Lewis Acids

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2966
Author(s):  
Veronika Heinl ◽  
Gábor Balázs ◽  
Sarah Koschabek ◽  
Maria Eckhardt ◽  
Martin Piesch ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Lewis Acid ◽  
Reaction Temperature ◽  
Lewis Acids ◽  
Computational Studies ◽  
Coordination Modes ◽  
Coordination Numbers ◽  
Coordination Behavior

The functionalization of the arsenic transfer reagent [Cp″2Zr(η1:1-As4)] (1) focuses on modifying its properties and enabling a broader scope of reactivity. The coordination behavior of 1 towards different Lewis-acidic transition metal complexes and main group compounds is investigated by experimental and computational studies. Depending on the steric requirements of the Lewis acids and the reaction temperature, a variety of new complexes with different coordination modes and coordination numbers could be synthesized. Depending on the Lewis acid (LA) used, a mono-substitution in [Cp″2Zr(µ,η1:1:1:1-As4)(LA)] (LA = Fe(CO)4 (4); B(C6F5)3 (7)) and [Cp″2Zr(µ,η3:1:1-As4)(Fe(CO)3)] (5) or a di-substitution [Cp″2Zr(µ3,η1:1:1:1-As4)(LA)2] (LA = W(CO)5 (2); CpMn(CO)2 (3); AlR3 (6, R = Me, Et, iBu)) are monitored. In contrast to other coordination products, 5 shows an η3 coordination in which the butterfly As4 ligand is rearranged to a cyclo-As4 ligand. The reported complexes are rationalized in terms of inverse coordination.

Complexes of ambiphilic ligands: reactivity and catalytic applications

2016 ◽  
Vol 45 (4) ◽  
pp. 1065-1079 ◽  
Author(s):  
Ghenwa Bouhadir ◽  
Didier Bourissou
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Lewis Acids ◽  
Catalytic Applications ◽  
The Way

This review focuses on the way Lewis acids of ambiphilic ligands influence the reactivity of transition metal complexes and on the new perspectives this opens in catalysis.

Mechanochemical changes on cyclometalated Ir(iii) acyclic carbene complexes – design and tuning of luminescent mechanochromic transition metal complexes

2020 ◽  
Vol 7 (3) ◽  
pp. 786-794 ◽  
Author(s):  
Jingqi Han ◽  
Kin-Man Tang ◽  
Shun-Cheung Cheng ◽  
Chi-On Ng ◽  
Yuen-Kiu Chun ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Carbene Complexes ◽  
New Class

A new class of luminescent cyclometalated Ir(iii) complexes with readily tunable mechanochromic properties derived from the mechanically induced trans-to-cis isomerization have been developed.

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