Spectroscopic characterisation of copper acetohydroxamate and copper n-octanohydroxamate
Author(s)
Hope, Gregory A
Woods, Ronald
Parker, Gretel K
Buckley, Alan N
McLean, John
Griffith University Author(s)
Year published
2011
Metadata
Show full item recordAbstract
The nature of the bonding in acetohydroxamic acid, copper acetohydroxamate and copper n-octanohydroxamate has been investigated by chemical analysis, XPS, FTIR and Raman spectroscopy. Vibrational spectra show the acid to be in the keto Z conformation as was previously established for the n-octano homologue. Chemical analysis established that the copper compounds have a copper:hydroxamate stoichiometry of 1:1. XPS confirms that they are CuII compounds. The absence of vibrational spectral bands that were previously identified with N-H vibrations for n-octanohydroxamic acid and its potassium compound, together with the presence ...
View more >The nature of the bonding in acetohydroxamic acid, copper acetohydroxamate and copper n-octanohydroxamate has been investigated by chemical analysis, XPS, FTIR and Raman spectroscopy. Vibrational spectra show the acid to be in the keto Z conformation as was previously established for the n-octano homologue. Chemical analysis established that the copper compounds have a copper:hydroxamate stoichiometry of 1:1. XPS confirms that they are CuII compounds. The absence of vibrational spectral bands that were previously identified with N-H vibrations for n-octanohydroxamic acid and its potassium compound, together with the presence of a CN stretch band that shifts when the nitrogen is labelled with 15N, confirms that the hydroxamate moieties in the CuII compounds are in the enol configuration. Some interaction between Cu and N is indicated by the spectra and could explain the 1:1 stoichiometry of the CuII hydroxamates investigated.
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View more >The nature of the bonding in acetohydroxamic acid, copper acetohydroxamate and copper n-octanohydroxamate has been investigated by chemical analysis, XPS, FTIR and Raman spectroscopy. Vibrational spectra show the acid to be in the keto Z conformation as was previously established for the n-octano homologue. Chemical analysis established that the copper compounds have a copper:hydroxamate stoichiometry of 1:1. XPS confirms that they are CuII compounds. The absence of vibrational spectral bands that were previously identified with N-H vibrations for n-octanohydroxamic acid and its potassium compound, together with the presence of a CN stretch band that shifts when the nitrogen is labelled with 15N, confirms that the hydroxamate moieties in the CuII compounds are in the enol configuration. Some interaction between Cu and N is indicated by the spectra and could explain the 1:1 stoichiometry of the CuII hydroxamates investigated.
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Journal Title
Inorganica Chimica Acta
Volume
365
Issue
1
Subject
Inorganic chemistry
Inorganic chemistry not elsewhere classified
Physical chemistry
Other chemical sciences