Charge Transfer and f-f Transitions Studied by Photoacoustic Spectroscopy of [R(NO_3)_2(PicBH)_2]NO_3 and [R(NO_3)_3(PicBH)_2] Complexes (R - Rare Earth Ion)

• Authors: N. Guskos , G. Papadopoulos , J. Majszczyk , J. Typek , M. Wabia , V. Likodimos , D. Paschalidis , I. Tossidis , k. Aidinis
• Languages of publication: EN

Abstracts

EN

High-resolution photoacoustic spectra of trinitrato-bis[N-(2-pyridyl-methylene)-N'-benzoyl-hydrazine]R (III), (R = La, Ce, Pr), and binitrato-bis[N-(2-pyridylmethylene)-N'-benzoyl-hydrazine]R(III) nitrate (R=Y, Nd, Eu, Yb, Tb, Gd, Ho, Dy, Er) complexes, in the visual region, were studied for powder samples. Very intense photoacoustic spectra of various shapes were attributed to the intraligand transitions of the π → π* type located mainly on the C=N group and the n → π* transitions located on the carbonyl group. The intensity of these transitions essentially depends on the type of rare earth ions. The existence of f-f electron transitions could influence the relaxation processes, which play an important role in intensity determination of the above transitions. For many investigated samples the energy levels of excited states of rare earth ions were identified (f-f electron transitions). The radiation energy for some of the rare earth ions were compared with the d-d electron transitions of certain copper(II) organometallic complexes, which are very important in biogenic systems. The correlation between ions with localized and extended wave functions is suggested.

Keywords

EN

78.20.Hp; 32.70.-n

Discipline

• 32.70.-n: Intensities and shapes of atomic spectral lines(see also 31.15.-p Calculations and mathematical techniques)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2003
• Volume: 103
• Issue: 2-3
• Pages: 301-313

Dates

published

2003-02/03

received

2002-09-05

Contributors

author

N. Guskos

• Solid State Section, Department of Physics, University of Athens, Panepistimiopolis, 15784 Zografos, Athens, Greece

author

G. Papadopoulos

• Solid State Section, Department of Physics, University of Athens, Panepistimiopolis, 15784 Zografos, Athens, Greece

author

J. Majszczyk

• Institute of Physics, Technical University of Szczecin, al. Piastów 17, 70-310 Szczecin, Poland

author

J. Typek

• Institute of Physics, Technical University of Szczecin, al. Piastów 17, 70-310 Szczecin, Poland

author

M. Wabia

• Institute of Physics, Technical University of Szczecin, al. Piastów 17, 70-310 Szczecin, Poland

author

V. Likodimos

• Faculty of Applied Mathematics and Physics, National Technical University of Athens, 15780 Athens, Greece

author

D. Paschalidis

• Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54006 Thessaloniki, Greece

author

I. Tossidis

• Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54006 Thessaloniki, Greece

author

k. Aidinis

• Applied Physics Section, Department of Physics, University of Athens, anepistimiopolis, 15784 Zografos, Athens, Greece

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Identifiers

DOI

10.12693/APhysPolA.103.301