Journal ArticleDOI
Photoinduced dimerization of macrocyclic complexes mediated by a metal-assisted oxidation of the macrocycle
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TLDR
In this article, the triplet state of benzophenone oxidizes Ni((14)aneN/sub 4/sup 2 +/ to a Ni(III) intermediate which subsequently produces the dimer of the complex as a product.Abstract:
The triplet state of benzophenone oxidizes Ni((14)aneN/sub 4//sup 2 +/ to a Ni(III) intermediate which subsequently produces the dimer of the complex as a product. The nature of the product was confirmed by structural studies. (Ni(13-At))/sup +/ reacts with the triplet of fluorenone and /sup 2/Estate of Cr(bpy)/sub 3//sup 3 +/ forming also a dimer in a reaction that involves different intermediates. Intermediates in the photoinduced oxidations of the macrocycles have been investigated by flash photolysis. The mechanism of the photoinduced oxidation is discussed in terms of the reported properties of the macrocycles.read more
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Book ChapterDOI
Homoleptic Complexes of 2,2′-Bipyridine
TL;DR: The homoleptic 2,2'-bipyridine (bpy) ligand is a strong field ligand that forms relatively stable complexes, with the inherent M-N bond strength enhanced by the chelate effect as mentioned in this paper.
Journal ArticleDOI
Role of Ligand to Control the Mechanism of Nitric Oxide Reduction of Copper(II) Complexes and Ligand Nitrosation
TL;DR: It is evident from the present study that the macrocyclic ligands prefer the deprotonation pathway leading to mononitrosation; whereas nonmacrocyclic ones prefer the [Cu(II)-NO] intermediate pathway resulting into nitrosation at all the available sites of the ligand as major product.
Journal ArticleDOI
Preparation and EPR Spectroscopic Investigation of Conjugated Oligomers Containing Semiquinone Repeat Units
TL;DR: Three protected catechol-containing conjugated oligomers have been prepared using Pd-mediated coupling reactions using two of the oligomers are poly[o-phenylenevinylene] type while the other is poly[ o-p...
Journal ArticleDOI
Redox behaviour of dioxotetraaza macrocyclic nickel complexes in aqueous solution: the appearance of two metal centred redox processes
TL;DR: In this paper, the potentials of the NiIII/II(L)+/0 couple were shown to refer to the redox transition in complexes with oxidized macrocyclic derivatives of 1 and 3 containing azomethine bonds formed as a result of base-catalyzed transformation of NiIII(L)+.
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