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Author
Yakubu, Abdallah Graduate School of Natural Science and Technology, Okayama University
Suzuki, Takayoshi Graduate School of Natural Science and Technology, Okayama University ORCID Kaken ID publons researchmap
Kita, Masakazu Faculty of Education, Okayama University Kaken ID publons researchmap
Abstract
A series of Nd-III and Eu-III complexes containing achiral or chiral dithiocarbamato (dtc) ligands, [Ln(Xdtc)(3)(NN)] {Ln = Nd or Eu; X = dimethyl- (Me-2), pyrrolidine- (pyr), or (S)-prolinol- (S-proOH); NN = 1,10-phenanthroline (phen) or 2,2'-bipyridine (bpy)}, were prepared and their crystal structures and spectroscopic properties, in particular the natural circular dichroism (CD) and magnetic circular dichroism (MCD), were investigated. The crystal structures of the complexes analyzed by the X-ray diffraction method showed an 8-coordinate geometry around the Ln III center with comparable structural parameters to one another and to the related complexes reported previously. These complexes exhibited similar spectral patterns in their absorption, natural CD and MCD spectra in solution. Weak but characteristic sharp f-f transition bands were observed in the absorption and MCD spectra, but no CD signals associated with these transitions were observed even in the S-proOHdtc complexes. The MCD spectral pattern of the Eu-III complexes revealed a local C-2v symmetry around the Ln(III) center in solution, in contrast to the aqua and the analogous beta-diketonato Eu-III complexes.
Keywords
Dithiocarbamate
Lanthanoid
Crystal structures
Magnetic circular dichroism
(S)-prolinol dithiocarbamate
Published Date
2018-09-25
Publication Title
Inorganica Chimica Acta
Volume
volume484
Publisher
Elsevier Science
Start Page
394
End Page
401
ISSN
00201693
NCID
AA10761133
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
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Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1016/j.ica.2018.09.064
License
https://creativecommons.org/licenses/by-nc-nd/4.0/
Citation
Abdallah Yakubu, Takayoshi Suzuki, Masakazu Kita, Syntheses and crystal structures of neodymium(III) and europium(III) complexes bearing dimethyl-, pyrrolidine-, or S-prolinol- dithiocarbamato ligands and their natural and magnetic circular dichroism spectra, Inorganica Chimica Acta, Volume 484, 2019, Pages 394-401, ISSN 0020-1693, https://doi.org/10.1016/j.ica.2018.09.064.
Funder Name
Ministry of Education, Culture, Sports, Science and Technology
助成番号
18 K05146