Syntheses, Structures, and Photophysical Properties of Eu and Lu Diketonates with a Neutral Polydentate Imidazolylmethanamine Ligand

K.S. Kisel, G. Linti, G.L. Starova, V.V. Sizov, A.S. Melnikov, A.P. Pushkarev, M.N. Bochkarev, E.V. Grachova, S.P. Tunik

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9 Citations (Scopus)

Abstract

© 2015 Wiley-VCH Verlag GmbH & Co. KGaA.The Schiff base NNO ligand 1-(furan-2-yl)-N-[(2-methyl-1H-imidazol-4-yl)methylene]methanamine was synthesized and structurally characterized by XRD crystallography, mass spectrometry, and NMR spectroscopy. Quantum-chemical calculations revealed conformational flexibility of the ligand backbone to give two different conformations with nearly equal ground-state energies. The orientation of two nitrogen atoms and the oxygen atom in one conformation is a good fit for the NNO tridentate coordination mode, whereas the other would allow the NN coordination mode only. Two lanthanide complexes [Ln(tta)3(NNO)] (Ln = EuIII and LuIII; tta = thenoyltrifluoroacetone) were prepared and studied spectroscopically. The structures of the complexes were optimized by the DFT approach. The NNO ligand in the Eu complex displays tridentate NNO coordination, whereas the ligand is only NN-coordinated in the Lu complex. The Eu complex shows bright red metal-centered phosphorescence under excitati
Original languageEnglish
Pages (from-to)1734-1743
JournalEuropean Journal of Inorganic Chemistry
Issue number10
DOIs
Publication statusPublished - 2015

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Ligands
4-methylimidazole
Conformations
Thenoyltrifluoroacetone
Lanthanoid Series Elements
Atoms
Phosphorescence
Crystallography
Schiff Bases
Discrete Fourier transforms
Crystal orientation
Ground state
Nuclear magnetic resonance spectroscopy
Mass spectrometry
Nitrogen
Metals
Oxygen
methylamine
furan

Cite this

@article{14004d8db96348e59df5926cdf0fc2f1,
title = "Syntheses, Structures, and Photophysical Properties of Eu and Lu Diketonates with a Neutral Polydentate Imidazolylmethanamine Ligand",
abstract = "{\circledC} 2015 Wiley-VCH Verlag GmbH & Co. KGaA.The Schiff base NNO ligand 1-(furan-2-yl)-N-[(2-methyl-1H-imidazol-4-yl)methylene]methanamine was synthesized and structurally characterized by XRD crystallography, mass spectrometry, and NMR spectroscopy. Quantum-chemical calculations revealed conformational flexibility of the ligand backbone to give two different conformations with nearly equal ground-state energies. The orientation of two nitrogen atoms and the oxygen atom in one conformation is a good fit for the NNO tridentate coordination mode, whereas the other would allow the NN coordination mode only. Two lanthanide complexes [Ln(tta)3(NNO)] (Ln = EuIII and LuIII; tta = thenoyltrifluoroacetone) were prepared and studied spectroscopically. The structures of the complexes were optimized by the DFT approach. The NNO ligand in the Eu complex displays tridentate NNO coordination, whereas the ligand is only NN-coordinated in the Lu complex. The Eu complex shows bright red metal-centered phosphorescence under excitati",
author = "K.S. Kisel and G. Linti and G.L. Starova and V.V. Sizov and A.S. Melnikov and A.P. Pushkarev and M.N. Bochkarev and E.V. Grachova and S.P. Tunik",
year = "2015",
doi = "10.1002/ejic.201403186",
language = "English",
pages = "1734--1743",
journal = "European Journal of Inorganic Chemistry",
issn = "1434-1948",
publisher = "Wiley-Blackwell",
number = "10",

}

TY - JOUR

T1 - Syntheses, Structures, and Photophysical Properties of Eu and Lu Diketonates with a Neutral Polydentate Imidazolylmethanamine Ligand

AU - Kisel, K.S.

AU - Linti, G.

AU - Starova, G.L.

AU - Sizov, V.V.

AU - Melnikov, A.S.

AU - Pushkarev, A.P.

AU - Bochkarev, M.N.

AU - Grachova, E.V.

AU - Tunik, S.P.

PY - 2015

Y1 - 2015

N2 - © 2015 Wiley-VCH Verlag GmbH & Co. KGaA.The Schiff base NNO ligand 1-(furan-2-yl)-N-[(2-methyl-1H-imidazol-4-yl)methylene]methanamine was synthesized and structurally characterized by XRD crystallography, mass spectrometry, and NMR spectroscopy. Quantum-chemical calculations revealed conformational flexibility of the ligand backbone to give two different conformations with nearly equal ground-state energies. The orientation of two nitrogen atoms and the oxygen atom in one conformation is a good fit for the NNO tridentate coordination mode, whereas the other would allow the NN coordination mode only. Two lanthanide complexes [Ln(tta)3(NNO)] (Ln = EuIII and LuIII; tta = thenoyltrifluoroacetone) were prepared and studied spectroscopically. The structures of the complexes were optimized by the DFT approach. The NNO ligand in the Eu complex displays tridentate NNO coordination, whereas the ligand is only NN-coordinated in the Lu complex. The Eu complex shows bright red metal-centered phosphorescence under excitati

AB - © 2015 Wiley-VCH Verlag GmbH & Co. KGaA.The Schiff base NNO ligand 1-(furan-2-yl)-N-[(2-methyl-1H-imidazol-4-yl)methylene]methanamine was synthesized and structurally characterized by XRD crystallography, mass spectrometry, and NMR spectroscopy. Quantum-chemical calculations revealed conformational flexibility of the ligand backbone to give two different conformations with nearly equal ground-state energies. The orientation of two nitrogen atoms and the oxygen atom in one conformation is a good fit for the NNO tridentate coordination mode, whereas the other would allow the NN coordination mode only. Two lanthanide complexes [Ln(tta)3(NNO)] (Ln = EuIII and LuIII; tta = thenoyltrifluoroacetone) were prepared and studied spectroscopically. The structures of the complexes were optimized by the DFT approach. The NNO ligand in the Eu complex displays tridentate NNO coordination, whereas the ligand is only NN-coordinated in the Lu complex. The Eu complex shows bright red metal-centered phosphorescence under excitati

U2 - 10.1002/ejic.201403186

DO - 10.1002/ejic.201403186

M3 - Article

SP - 1734

EP - 1743

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

SN - 1434-1948

IS - 10

ER -