- Tytuł:
- Optical Properties and Structure of Ln(NCS)(Hmpa)$\text{}_{4}$-(SCN)$\text{}_{2}$- HgCl(SCN)
- Autorzy:
-
Gałdecka, E.
Gałdecki, Z.
Amirkhanov, V.
Kern, K.
Legendziewicz, J. - Powiązania:
- https://bibliotekanauki.pl/articles/1945687.pdf
- Data publikacji:
- 1996-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
78.20.Wc
78.55.Hx
78.20.Dj
78.66.-w
61.66.Fn - Opis:
- Praseodymium, neodymium and europium complexes of the formula Ln(NCS)(Hmpa)$\text{}_{4}$-(SCN)$\text{}_{2}$-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$\text{}^{3+}$ 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.
- Źródło:
-
Acta Physica Polonica A; 1996, 90, 2; 469-476
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł