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The photoexcitation and photoluminescence of the crystalline tetrahedral complexes of manganese(II) chloride with hydrochloride of phenazone and aminophenazone

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Czechoslovak Journal of Physics B Aims and scope

Summary

The excitation and emission spectra of the complexes (PH)2MnCl4 and (APH)2. MnCl4 have been studied. All the bands characteristic of excitation transitions ofd 5 configuration — the manganese(II) ion being of tetrahedral symmetry — were identified. The spectrum was interpreted in terms of the Orgel's weak field matrix for quartet levelsd 5; and the Racah's parametersB andC, the secular determinants, the ground terms and the field strength of thsse complexes were calculated. The 10Dq value for either of the two compounds was found to be 400 cm−1.

The theories of a harmonic oscillator make possible the determination of characteristic parameters from the emission spectrum.

The character and the arrangement of bands of excitation and emission spectra — green luminescence — of the crystals are indicative of tetrahedral structure of the complexes. The phenomenon of luminescence has been explained by the4 T 1(G) → →6 A 1(S) transition.

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Authors and Affiliations

  1. Institute of Physics, Dr. Subotića 8, 11000, Beograd, Yugoslavia

    K. Nikolić, I. Burić & A. Aleksić

Authors
  1. K. Nikolić
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  2. I. Burić
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  3. A. Aleksić
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Nikolić, K., Burić, I. & Aleksić, A. The photoexcitation and photoluminescence of the crystalline tetrahedral complexes of manganese(II) chloride with hydrochloride of phenazone and aminophenazone. Czech J Phys 34, 589–594 (1984). https://doi.org/10.1007/BF01595715

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  • DOI: https://doi.org/10.1007/BF01595715

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