Energy Analysis of Metal-Ligand Bonding in Transition Metal Complexes with Terminal Group-13 Diyl Ligands (CO)4Fe-ER, Fe(EMe)5and Ni(EMe)4(E = B−Tl; R = Cp, N(SiH3)2, Ph, Me) Reveals Significant π Bonding in Homoleptical Molecules‡

2001 ◽  
Vol 123 (8) ◽  
pp. 1683-1693 ◽  
Author(s):  
Jamal Uddin ◽  
Gernot Frenking
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Energy Analysis ◽  
Terminal Group ◽  
Group 13 ◽  
Metal Ligand

Syntheses of Chelating Tetrazole-Containing Ligands and Studies of Their Palladium(II) and Ruthenium(II) Complexes

1995 ◽  
Vol 48 (9) ◽  
pp. 1625 ◽  
Author(s):  
AJ Downard ◽  
PJ Steel ◽  
J Steenwijk
Keyword(s):  
Cyclic Voltammetry ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Absorption Spectroscopy ◽  
Electronic Absorption ◽  
Ph Control ◽  
Strong Electron ◽  
Ligand Interactions ◽  
Metal Ligand

Eleven chelating tetrazole -containing ligands have been synthesized, and their complexes with palladium(II) and ruthenium(II) prepared. Proton n.m.r. spectroscopy, electronic absorption spectroscopy and cyclic voltammetry have been used to study the nature of the metal-ligand interactions in these complexes. The negatively charged tetrazolate group is shown to be a strong electron donor with very different properties to those of the protonated or alkylated tetrazole group. This leads to pH control of the properties of transition metal complexes containing such ligands.

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