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Tricarbonyl Rhenium(I) and Technetium(I) Complexes with Hydrazones Derived from 4,5‐Diazafluoren‐9‐one and 1,10‐Phenanthroline‐5,6‐dione
Author(s) -
Barbazán Paula,
Hagenbach Adelheid,
Oehlke Elisabeth,
Abram Ulrich,
Carballo Rosa,
RodríguezHermida Sabina,
VázquezLópez Ezequiel M.
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201000522
Subject(s) - chemistry , rhenium , phenanthroline , hydrazone , technetium , halide , imine , medicinal chemistry , chelation , proton nmr , benzoic acid , hydrazine (antidepressant) , metal , inorganic chemistry , nuclear chemistry , stereochemistry , organic chemistry , catalysis , chromatography
Tricarbonylrhenium(I) and ‐technetium(I) halide (halide = Cl and Br) complexes of ligands derived from 4,5‐diazafluoren‐9‐one (df) and 1,10‐phenanthroline‐5,6‐dione (phen) derivatives of benzoic and 2‐hydroxybenzoic acid hydrazides have been prepared. The complexes have been characterized by elemental analysis, MS, IR, 1 H NMR and absorption and emission UV/Vis spectroscopic methods. The metal centres (Re I and Tc I ) are coordinated through the nitrogen imine atoms and establish five‐membered chelate rings, whereas the hydrazone groups stand uncoordinated. The 1 H NMR spectra suggest the same behaviour in solution on the basis of only marginal variations in the chemical shifts of the hydrazine protons.