ISSN:
1588-2780
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract We report the temperature dependence of Mössbauer spectra of a mixed-valence dinuclear Fe(II) Fe(III) complex, [Fe2(bpmp)(Ph(CH2)2COO−)2](BF4)2 1, where Hbpmp represents 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-methylphenol. Two quadrupole doublets observed at 78 K approach each other as the temperature is increased. The two high-energy components of a doublet due to Fe(II) and of that due to Fe(III) become broad in the temperature range from 78 to 230 K and then become narrow above 260 K. The temperature dependence of the spectra was interpreted by assuming of intramolecular electron exchanges between two energetically inequivalent vibronic states FeA(II)FeB(III) and FeA(III)FeB(II) where one of them is slightly more stable than the other.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02349495
