Axial ligand exchange reactions of ferrous phthalocyanine. Exchange of imidazole for dimethyl sulfoxide

1969 ◽  
Vol 8 (10) ◽  
pp. 2120-2123 ◽  
Author(s):  
John Gareth Jones ◽  
M. V. Twigg
Keyword(s):  
Dimethyl Sulfoxide ◽  
Ligand Exchange ◽  
Axial Ligand ◽  
Exchange Reactions

Voltammetric Studies of Some Novel Fe(III) Complexes with Quadridentate Ligands. The Axial Ligand-Exchange Reactions in DMF and DMSO

1995 ◽  
Vol 60 (7) ◽  
pp. 1140-1157 ◽  
Author(s):  
Ljiljana S. Jovanovic ◽  
Luka J. Bjelica
Keyword(s):  
Oxidation State ◽  
Chemical Reactions ◽  
Ligand Exchange ◽  
Kinetic Data ◽  
Central Atom ◽  
Axial Ligand ◽  
Exchange Reactions ◽  
Ligand Effect ◽  
Condensation Products ◽  
Voltammetric Studies

The electrochemistry of four novel Fe(III) complexes of the type [Fe(L)Cl], involving quadridentate ligands based on the condensation products of benzoylacetone-S-methylisothiosemicarbazone with salicylaldehyde, 5-chlorosalicylaldehyde, 3,5-dichlorosalicylaldehyde or 5-nitrosalicylaldehyde, was studied in DMF and DMSO at a GC electrode. All complexes undergo a two-step one-electron reductions, usually complicated by chemical reactions. In solutions containing Cl-, the ligand-exchange reactions Cl--DMF and Cl--DMSO take place. Stability of the chloride-containing complexes was discussed in terms of the coordinated ligand effect, oxidation state of the central atom and, in particular, of the donor effect of the solvent. Some relevant kinetic data were calculated.

Axial ligand exchange reaction on ruthenium phthalocyanines

2005 ◽  
Vol 09 (04) ◽  
pp. 248-255 ◽  
Author(s):  
Xichuan Yang ◽  
Mikael Kritikos ◽  
Björn Åkermark ◽  
Licheng Sun
Keyword(s):  
Ligand Exchange ◽  
Elevated Temperatures ◽  
Dye Sensitized Solar Cells ◽  
Bond Distance ◽  
Axial Ligand ◽  
X Ray Diffraction ◽  
Exchange Reactions ◽  
Axial Ligands ◽  
Potential Applications ◽  
High Boiling Point

Bis(4-methylpyridine)phthalocyaninato ruthenium(II) has been synthesized. It was proved by single-crystal X-ray diffraction that the central Ru(II) atom is bonded to six N atoms in an elongated octahedral configuration, and the axial ligands have a significantly longer Ru - N bond distance, 2.101(4) Å, than the independent pyrrol Ru - N bond, 1.99 Å. Therefore, the axial ligands can be exchanged by other ligands. The ligand exchange reactions with diethyl pyridyl-4-phosphonate and diethyl pyridylmethyl-4-phosphonate were studied in high boiling-point solvents at elevated temperatures, ca 160 °C. Mono-ligand as well as double-ligand replaced complexes were obtained. The complexes have been isolated by column chromatography. These complexes have potential applications, such as in dye sensitized solar cells.

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