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Inne
Comparative optical studies of lanthanide complexes with three types of phosphoro-azo derivatives of β-diketones.
Autorzy
Rok wydania
1999
Czasopismo
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
Numer woluminu
A55
Strony
349-367
DOI
10.1016/S1386-1425(98)00193-0
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A new class of lanthanide compounds of the formula Na[LnL4]·H2O and LnC3·2H2O (where L=Wo or Az; Wo=CCl3C(O)NP(O)(OCH3)2; Az=C6H5C(O)NP(O)[N(CH2)2]2; C=CCl3C(O)NP(O)(NHC6H5)2) was obtained from mixed solvent solutions with the three types of phosphoro-azo derivatives of the β-diketones. Spectroscopic properties of these complexes are investigated and related to the structure and single crystal spectra of one of the above mentioned compounds [Amirkhanow et al., J. Appl. Spectr. 62 (1995) 5; Amirkhanow et al., Acta Phys. Polonica 90 (1996) 455]. The strong interaction of the ligands with the lanthanides was confirmed both by IR and electronic spectra. The intensities and splitting pattern of the electronic levels were used for the structure determination. IR and Raman spectra in the FIR and MIR regions have been recorded for solid lanthanide(III) (Eu, Pr, Nd) complexes with phosphoro-azo-β-diketones (Wo, Az and C). The normal coordinate analysis and potential energy distribution were performed for Ln(NPC2O4) molecular system consisting four chelate rings. On that basis, the assignment of the bands observed is proposed and related to the crystal structure of the complexes studied.
Słowa kluczowe
Phosphoro-azo, β-Diketones of Ln(III), Electronic, IR and Roman spectra, Normal coordinate analysis
Adres publiczny
https://doi.org/10.1016/S1386-1425(98)00193-0
Strona internetowa wydawcy
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