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Optical Properties and Structure of Ln(NCS)(Hmpa)_{4}-(SCN)_{2}- HgCl(SCN)

100%

Gałdecka E., Gałdecki Z., Amirkhanov V., Kern K., Legendziewicz J.

Acta Physica Polonica A

1996

vol. 90

issue 2

469-476

Praseodymium, neodymium and europium complexes of the formula Ln(NCS)(Hmpa)_{4}-(SCN)_{2}-HgCl(SCN) were synthesised from non-aqueous solutions. The structure of neodymium complexes was determined by X-ray diffraction. The crystals of the title compounds crystallise in the space group Cc, where lanthanide ions are coordinated to seven ligand groups: four of Hmpa molecules and three SCN¯ ions. The compounds were characterised by IR, luminescence, excitation and absorption spectra at 6, 77, and 298 K. Probabilities of electronic transitions for Pr^{3+} ion were examined at 6 K and at room temperatures. Vibronic components were observed and analysed on the basis of IR and Raman data. Asymmetric arrangement of Ln ions was found from X-ray analysis and its influence on optical properties of active centre was discussed.

Spectroscopic Studies of Neodymium and Europium Phosphoro-azo β-Diketonates

86%

Amirkhanov V., Ovchinnikov V., Legendziewicz J., Graczyk A., Hanuza J., Macalik L.

Acta Physica Polonica A

1996

vol. 90

issue 2

455-460

New complexes of lanthanides (Nd, Eu) with phosphoro-azo derivatives of β-diketones were synthesized. Optical properties of these compounds were investigated and confronted with the structure and single crystal spectra of different types of earlier reported lanthanide phosphoro-azo-β-diketonates. The exchange of the N-P-O-Me ligand group by the N-P-NR_{2} one plays only a minor role in binding character of lanthanide ions but strongly affects biological functions and properties of lanthanide systems. In vitro experiment on cytotoxicity of the samples was performed using 10T_{1/2}, L_{1}, MCF, DETA and Meω-132 cell lines.

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2 Acta Physica Polonica A

2 1996

2 Amirkhanov V.

2 Legendziewicz J.

1 Gałdecka E.

1 Gałdecki Z.

1 Graczyk A.

1 Hanuza J.

1 Kern K.

1 Macalik L.

1 Ovchinnikov V.

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Optical Properties and Structure of Ln(NCS)(Hmpa)_{4}-(SCN)_{2}- HgCl(SCN)

Spectroscopic Studies of Neodymium and Europium Phosphoro-azo β-Diketonates