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Inne
Optical spectroscopy and structure of neodymium complexes with 2,6-pyridine-dicarboxylic acid in solution and single crystal at room and low temperatures.
Autorzy
Rok wydania
1995
Czasopismo
Journal of Alloys and Compounds
Numer woluminu
225
Strony
367-371
DOI
10.1016/0925-8388(94)07041-5
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
X-ray characterization of a compound reported as Na 3 [Nd(dpa) 3 ].15H 2 O by Albertsson was repeated and it was found to be a 14-hydrate. Absorption spectra of the crystal were measured along the a axis at room temperature and at 5 K. The results for the crystal were compared with those for Nd(III) aquoion and Nd(III)-dipicolinate solutions. Intensities of the f-f transitions were analyzed according to the Judd-Ofelt theory. The good correspondence between the values of oscillator strength of the hypersensitive transition for [Nd(dpa) 3 ] 3 - complex in solution and in the crystal suggests an analogy between the coordination polyhedra; however, the crystal field splitting is different, best seen for the I 4 9 / 2 -> 2 P transition. The contribution of polarization and electrostatic field mechanisms to the oscillator strengths is discussed.
Słowa kluczowe
X-Ray structure, Absorption, Intensity analysis, Nepheloauxetic effect
Adres publiczny
https://doi.org/10.1016/0925-8388(94)07041-5
Strona internetowa wydawcy
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