Molecular orbital calculations on transition metal complexes. Part XXI. The influence of ring size on metal-ligand interactions in 3d sandwich compounds

1978 ◽  
Vol 30 ◽  
pp. 251-258 ◽  
Author(s):  
D.W. Clack ◽  
K.D. Warren
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Molecular Orbital ◽  
Transition Metal Complexes ◽  
Molecular Orbital Calculations ◽  
Ring Size ◽  
Sandwich Compounds ◽  
Ligand Interactions ◽  
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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