Browsing by Author "Singh, Priti"

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    The electron transfer chemistry of nitrosyl complexes
    (2008) Singh, Priti; Kaim, Wolfgang (Prof. Dr.)
    In this thesis, various transition metal complexes of the "non-innocent" nitrosyl ligand were studied with respect to their synthetic, structural and electronic structural aspects using a number of spectroscopic techniques. The reactivity of coordinated nitric oxide and electron transfer occurring in metal nitrosyl complexes were investigated varying metal and coligand environment. In Chapter 2, experimental and computational results for the two-step redox system [Cl5Os(NO)]n- (n = 1-3) are discussed in comparison to the related one-step redox systems [Cl5Ru(NO)]n- and [Cl5Ir(NO)]n- (n = 1, 2). In Chapter 3, extensive experimental and theoretical studies of ruthenium nitrosyl tetraphenylporphyrin complexes [(TPP)Ru(NO)(X)]BF4, TPP = tetraphenylporphyrin, X = H2O, pyridine, 4-cyanopyridine and 4-N,N-dimethylaminopyridine, are described. In Chapter 4, ruthenium mononuclear complexes with the pi acceptor ligands 2,2'-bipyrimidine (bpym) and 2,2':6',2''-terpyridine (terpy) are studied. In Chapter 5, the studies on dinuclear complexes are described. The redox series {(bpym)[RuCl(terpy)]2}n and {bpym)[Ru(NO2)(terpy)]2}n, n = (0)-(4+) have been studied with respect to their mixed-valent properties and attempts have been made to prepare the complex {(bpym)[Ru(NO)(terpy)]2}6+ which contains potentially coupled electroactive metal-ligand moieties.