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

Research output: Contribution to journalArticle

Abstract

A series of NdIII and EuIII complexes containing achiral or chiral dithiocarbamato (dtc) ligands, [Ln(Xdtc)3(NN)] {Ln = Nd or Eu; X = dimethyl- (Me2), 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 LnIII 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 EuIII complexes revealed a local C2v symmetry around the LnIII center in solution, in contrast to the aqua and the analogous β-diketonato EuIII complexes.

LanguageEnglish
Pages394-401
Number of pages8
JournalInorganica Chimica Acta
Volume484
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Bearings (structural)
Europium
Neodymium
Dichroism
neodymium
europium
dichroism
Crystal structure
Ligands
2,2'-Dipyridyl
ligands
crystal structure
synthesis
X ray diffraction
Geometry
prolinol
pyrrolidine
absorption spectra

Keywords

  • (S)-prolinol dithiocarbamate
  • Crystal structures
  • Dithiocarbamate
  • Lanthanoid
  • Magnetic circular dichroism

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

@article{684991384300484e8cbe65ff7359b787,
title = "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",
abstract = "A series of NdIII and EuIII complexes containing achiral or chiral dithiocarbamato (dtc) ligands, [Ln(Xdtc)3(NN)] {Ln = Nd or Eu; X = dimethyl- (Me2), 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 LnIII 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 EuIII complexes revealed a local C2v symmetry around the LnIII center in solution, in contrast to the aqua and the analogous β-diketonato EuIII complexes.",
keywords = "(S)-prolinol dithiocarbamate, Crystal structures, Dithiocarbamate, Lanthanoid, Magnetic circular dichroism",
author = "Abdallah Yakubu and Takayoshi Suzuki and Masakazu Kita",
year = "2019",
month = "1",
day = "1",
doi = "10.1016/j.ica.2018.09.064",
language = "English",
volume = "484",
pages = "394--401",
journal = "Inorganica Chimica Acta",
issn = "0020-1693",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - 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

AU - Yakubu, Abdallah

AU - Suzuki, Takayoshi

AU - Kita, Masakazu

PY - 2019/1/1

Y1 - 2019/1/1

N2 - A series of NdIII and EuIII complexes containing achiral or chiral dithiocarbamato (dtc) ligands, [Ln(Xdtc)3(NN)] {Ln = Nd or Eu; X = dimethyl- (Me2), 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 LnIII 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 EuIII complexes revealed a local C2v symmetry around the LnIII center in solution, in contrast to the aqua and the analogous β-diketonato EuIII complexes.

AB - A series of NdIII and EuIII complexes containing achiral or chiral dithiocarbamato (dtc) ligands, [Ln(Xdtc)3(NN)] {Ln = Nd or Eu; X = dimethyl- (Me2), 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 LnIII 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 EuIII complexes revealed a local C2v symmetry around the LnIII center in solution, in contrast to the aqua and the analogous β-diketonato EuIII complexes.

KW - (S)-prolinol dithiocarbamate

KW - Crystal structures

KW - Dithiocarbamate

KW - Lanthanoid

KW - Magnetic circular dichroism

UR - http://www.scopus.com/inward/record.url?scp=85054197860&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85054197860&partnerID=8YFLogxK

U2 - 10.1016/j.ica.2018.09.064

DO - 10.1016/j.ica.2018.09.064

M3 - Article

VL - 484

SP - 394

EP - 401

JO - Inorganica Chimica Acta

T2 - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

ER -