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Abstract
The electronic structure of coordination compounds with lanthanide ions is studied by means of density functional theory (DFT) calculations. This work deals with the electronic structure and properties of open-shell systems based on the calculation of multiplet structure and ligand-field interaction, within the framework of the Ligand–Field Density-Functional Theory (LFDFT) method. Using effective Hamiltonian in conjunction with the DFT, we are able to reasonably calculate the low-lying excited states of the molecular [Eu(NO3)3(phenanthroline)2] complex, subjected to the Eu3+ configuration 4f6. The results are compared with available experimental data, revealing relative uncertainties of less than 5% for many energy levels. We also demonstrate the ability of the LFDFT method to simulate absorption spectrum, considering cerocene as an example. Ce M4,5 X-ray absorption spectra are simulated for the complexes [Ce(η8−C8H8)2] and [Ce(η8−C8H8)2][Li(tetrahydrofurane)4], which are approximated by the Ce oxidation states 4+ and 3+, respectively. The results showed a very good agreement with the experimental data for the Ce3+ compound, unlike for the Ce4+ one, where charge transfer electronic structure is still missing in the theoretical model. Therefore this presentation reports the benefits of having a theoretical method that is primarily dedicated to coordination chemistry, but it also outlines limitations and places the ongoing developmental efforts in the broader context of treating complex molecular systems.
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Babetto L, Carlotto S, Carlotto A, Rancan M, Bottaro G, Armelao L, Casarin M. Antenna triplet DFT calculations to drive the design of luminescent Ln 3+ complexes. Dalton Trans 2020; 49:14556-14563. [PMID: 33107521 DOI: 10.1039/d0dt02624g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory-based methods have been exploited to look into the structural, vibrational and electronic properties of antenna ligands, all of them being crucial factors for the reliable design of customized luminescent lanthanide (Ln3+) complexes. The X-ray structures, UV-Vis absorption spectra and triplet (T1) energies of three novel β-diketone ligands with a thienyl group and naphthyl (L1), phenanthryl (L2), and pyrenyl (L3) polycyclic aromatic hydrocarbons as substituents have been modelled. Vibronic progressions provide a strong contribution to the L1 and L2 absorption spectra, while the L3 absorption spectrum needs the assumption of different conformational isomers in solution. T1 energies have been estimated either through the vertical- or the adiabatic-transition approach. The comparison with the phosphorescence spectra of Gd3+ complexes allowed us to infer that the latter approach is the most suitable one, in particular when sizable ligands are involved. Results obtained for the isolated antennas can be directly compared with those of the corresponding Ln3+ complexes, due to the unanimously accepted assumption that the excitation is ligand-centred.
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Affiliation(s)
- Luca Babetto
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy.
| | - Silvia Carlotto
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy. and Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Alice Carlotto
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy.
| | - Marzio Rancan
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Gregorio Bottaro
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Lidia Armelao
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy. and Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - Maurizio Casarin
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via F. Marzolo 1, 35131 Padova, Italy. and Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemistry, University of Padova, via F. Marzolo 1, 35131 Padova, Italy
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Zhang Z, He L, Feng J, Liu X, Zhou L, Zhang H. Unveiling the Relationship between Energy Transfer and the Triplet Energy Level by Tuning Diarylethene within Europium(III) Complexes. Inorg Chem 2019; 59:661-668. [PMID: 31851500 DOI: 10.1021/acs.inorgchem.9b02907] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Luminescence performance and photoisomerization control of sensitized energy transfer in a series of Eu(acac)3De complexes that contain photochromic diarylethene (De) as the ligand are studied by theoretical methods. Both the open-ring and closed-ring isomers exhibit a consistent coordination mode between the EuIII ion and De. An unneglected weak interaction originating from electrostatic attraction is found in the region of the coordinate bond Eu-N. The open-ring isomer has higher triplet energy levels than 5D1 and 5D0 of the EuIII ion, which facilitates forward energy transfer from De to the EuIII ion. The closed-ring isomer, for the extended conjugated system formed in cyclization, has a much lower triplet energy level than 5D0 of the EuIII ion. The energy-gap deficit makes energy transfer unavailable. By utilization of this phenomenon, regulation of energy transfer and reversible on/off luminescence switching of the europium(III) complex can be achieved. The forward and backward energy-transfer rates in different channels are also calculated for the series of complexes. A statistics diagram is obtained to exhibit the change trend of energy-transfer rates in the forward and backward directions as a function of the triplet energy level, which indicates the contribution of different channels to energy transfer in each level region and figures out that the optimal triplet energy level should be in the range of 21740-19532 cm-1.
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Affiliation(s)
- Zhixiang Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , People's Republic of China
| | - Lingjun He
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , People's Republic of China
| | - Jing Feng
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , People's Republic of China
| | - Xiaojuan Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , People's Republic of China
| | - Liang Zhou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , People's Republic of China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , People's Republic of China
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4
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Wang CX, Li Y, Li ZF, Liu ZJ, Valeev EF, Moskaleva LV. Combined Relativistic Ab Initio Multireference and Experimental Study of the Electronic Structure of Terbium Luminescent Compound. J Phys Chem A 2019; 124:82-89. [DOI: 10.1021/acs.jpca.9b11089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Chun-Xiang Wang
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Yong Li
- Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology, University of Bremen, Bremen 28359, Germany
| | - Zhi-Feng Li
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Zhi-Jun Liu
- School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Edward F. Valeev
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Lyudmila V. Moskaleva
- Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology, University of Bremen, Bremen 28359, Germany
- Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein 9300, South Africa
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5
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Abbas Z, Dasari S, Beltrán-Leiva MJ, Cantero-López P, Páez-Hernández D, Arratia-Pérez R, Butcher RJ, Patra AK. Luminescent europium(iii) and terbium(iii) complexes of β-diketonate and substituted terpyridine ligands: synthesis, crystal structures and elucidation of energy transfer pathways. NEW J CHEM 2019. [DOI: 10.1039/c9nj02838b] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of coordinatively saturated LnIII complexes: [Ln(R-TPY)(TTA)3] (1–6) were designed and structurally characterized and plausible energy transfer (ET) pathways determined using a theoretical method.
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Affiliation(s)
- Zafar Abbas
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Srikanth Dasari
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - María J. Beltrán-Leiva
- Relativistic Molecular Physics (ReMoPh) Group
- Ph.D. Program in Molecular Physical Chemistry
- Universidad Andrés Bello
- Santiago 8370146
- Chile
| | - Plinio Cantero-López
- Relativistic Molecular Physics (ReMoPh) Group
- Ph.D. Program in Molecular Physical Chemistry
- Universidad Andrés Bello
- Santiago 8370146
- Chile
| | - Dayán Páez-Hernández
- Relativistic Molecular Physics (ReMoPh) Group
- Ph.D. Program in Molecular Physical Chemistry
- Universidad Andrés Bello
- Santiago 8370146
- Chile
| | - Ramiro Arratia-Pérez
- Relativistic Molecular Physics (ReMoPh) Group
- Ph.D. Program in Molecular Physical Chemistry
- Universidad Andrés Bello
- Santiago 8370146
- Chile
| | | | - Ashis K. Patra
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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6
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Modeling intramolecular energy transfer in lanthanide chelates: A critical review and recent advances. INCLUDING ACTINIDES 2019. [DOI: 10.1016/bs.hpcre.2019.08.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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7
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Beltrán-Leiva MJ, Páez-Hernández D, Arratia-Pérez R. Theoretical Determination of Energy Transfer Processes and Influence of Symmetry in Lanthanide(III) Complexes: Methodological Considerations. Inorg Chem 2018; 57:5120-5132. [DOI: 10.1021/acs.inorgchem.8b00159] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- María J. Beltrán-Leiva
- Relativistic Molecular Physics (ReMoPh) Group, Ph.D. Program in Molecular Physical Chemistry, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
| | - Dayán Páez-Hernández
- Relativistic Molecular Physics (ReMoPh) Group, Ph.D. Program in Molecular Physical Chemistry, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
- Center of Applied Nanosciences (CANS), Facultad de Ciencias Exactas, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
| | - Ramiro Arratia-Pérez
- Relativistic Molecular Physics (ReMoPh) Group, Ph.D. Program in Molecular Physical Chemistry, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
- Center of Applied Nanosciences (CANS), Facultad de Ciencias Exactas, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
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8
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Beltrán-Leiva MJ, Cantero-López P, Zúñiga C, Bulhões-Figueira A, Páez-Hernández D, Arratia-Pérez R. Theoretical Method for an Accurate Elucidation of Energy Transfer Pathways in Europium(III) Complexes with Dipyridophenazine (dppz) Ligand: One More Step in the Study of the Molecular Antenna Effect. Inorg Chem 2017; 56:9200-9208. [DOI: 10.1021/acs.inorgchem.7b01221] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- María J. Beltrán-Leiva
- Relativistic Molecular Physics (ReMoPh) Group, Ph.D. Program in Molecular
Physical Chemistry, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
| | - Plinio Cantero-López
- Relativistic Molecular Physics (ReMoPh) Group, Ph.D. Program in Molecular
Physical Chemistry, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
| | - César Zúñiga
- Centro de Nanociencias
Aplicadas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
| | - Ana Bulhões-Figueira
- Centro Universitário Estácio de Ribeirão Preto, Rua Abrahão Issa Halach, 980 Ribeirânia, Ribeirão Preto, Sao Paulo 14096-160, Brazil
| | - Dayán Páez-Hernández
- Relativistic Molecular Physics (ReMoPh) Group, Ph.D. Program in Molecular
Physical Chemistry, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
- Centro de Nanociencias
Aplicadas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
| | - Ramiro Arratia-Pérez
- Relativistic Molecular Physics (ReMoPh) Group, Ph.D. Program in Molecular
Physical Chemistry, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
- Centro de Nanociencias
Aplicadas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Av. República 275, Santiago 8370146, Chile
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9
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Knyazev AA, Karyakin ME, Krupin AS, Romanova KA, Galyametdinov YG. Influence of Eu(III) Complexes Structural Anisotropy on Luminescence of Doped Conjugated Polymer Blends. Inorg Chem 2017; 56:6067-6075. [DOI: 10.1021/acs.inorgchem.6b02825] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrey A. Knyazev
- Physical and Colloid
Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Maksim E. Karyakin
- Physical and Colloid
Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Aleksandr S. Krupin
- Physical and Colloid
Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Ksenia A. Romanova
- Physical and Colloid
Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Yuriy G. Galyametdinov
- Physical and Colloid
Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
- Kazan E. K. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, 420029 Kazan, Russia
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10
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Guillaumont D, Guilbaud P, Sorel C, Gutierrez F, Chalmet S, Defranceschi M. Modeling Selectivity in Liquid/Liquid Extraction. NUCL SCI ENG 2017. [DOI: 10.13182/nse06-a2607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- D. Guillaumont
- CEA-VRH, DEN/DRCP/SCPS/LCAM, BP17171, F-30207 Bagnols-sur-Cèze, France
| | - Ph. Guilbaud
- CEA-VRH, DEN/DRCP/SCPS/LCAM, BP17171, F-30207 Bagnols-sur-Cèze, France
| | - C. Sorel
- CEA-VRH, DEN/DRCP/SCPS/LCAM, BP17171, F-30207 Bagnols-sur-Cèze, France
| | - F. Gutierrez
- CEA-VRH, DEN/DRCP/SCPS/LCAM, BP17171, F-30207 Bagnols-sur-Cèze, France
| | - S. Chalmet
- CEA-VRH, DEN/DRCP/SCPS/LCAM, BP17171, F-30207 Bagnols-sur-Cèze, France
| | - M. Defranceschi
- CEA-Saclay, Bât. 121, DEN/DSOE/RB, F-91191 Gif-sur-Yvette Cedex, France
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11
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Bayat M, Ebrahimkhani L, Salehzadeh S. Where, how and how much the strength of interaction between a hydrated lanthanide cation and a π-system would be increased? A theoretical study. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.02.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Trumm M, Schimmelpfennig B. Towards the origin of effective An(III)/Ln(III) separation by tridentate N-donor ligands: a theoretical study on atomic charges and polarisabilities for Cm(III)/Gd(III) separation. Mol Phys 2016. [DOI: 10.1080/00268976.2015.1131862] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Michael Trumm
- Institut für Nukleare Entsorgung (INE), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Bernd Schimmelpfennig
- Institut für Nukleare Entsorgung (INE), Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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13
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Hatanaka M, Morokuma K. Exploring the Reaction Coordinates for f–f Emission and Quenching of Lanthanide Complexes – Thermosensitivity of Terbium(III) Luminescence. J Chem Theory Comput 2014; 10:4184-8. [DOI: 10.1021/ct500668n] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Miho Hatanaka
- Fukui Institute for Fundamental
Chemistry, Kyoto University, Kyoto, 606-8103 Kyoto, Japan
| | - Keiji Morokuma
- Fukui Institute for Fundamental
Chemistry, Kyoto University, Kyoto, 606-8103 Kyoto, Japan
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14
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Tan X, Ren X, Chen C, Wang X. Analytical approaches to the speciation of lanthanides at solid-water interfaces. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.06.010] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Theoretical study of structure and stability of small gadolinium carboxylate complexes in liquid scintillator solvents. J Mol Model 2014; 20:2434. [PMID: 25204583 DOI: 10.1007/s00894-014-2434-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
Abstract
The structural properties of three small gadolinium carboxylate complexes in three liquid scintillator solvents (pseudocumene, linear alkylbenzene, and phenyl xylylethane) were theoretically investigated using density functional theory (B3LYP/LC-RECP) and polarizable continuum model (PCM). The average interaction energy between gadolinium atom and carboxylate ligand (E(int)) and the energy difference of the highest singly occupied molecular orbital and lowest unoccupied molecular orbital (Δ(SL)) were calculated to evaluate and compare the relative stability of these complexes in solvents. The calculation results show that the larger (with a longer alkyl chain) gadolinium carboxylate complex has greater stability than the smaller one, while these gadolinium carboxylates in linear alkylbenzene were found to have greater stability than those in the other two solvents.
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16
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Esrafili MD, Alizadeh V. A theoretical study on bonding and energy aspects of and [LnL3 · H2O]3+complexes (Ln = La, Eu, Gd, L · u; L = β-diketone, β-dithioketone, β-diphosphine oxide). Mol Phys 2012. [DOI: 10.1080/00268976.2012.670279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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17
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Marie C, Miguirditchian M, Guillaumont D, Tosseng A, Berthon C, Guilbaud P, Duvail M, Bisson J, Guillaneux D, Pipelier M, Dubreuil D. Complexation of Lanthanides(III), Americium(III), and Uranium(VI) with Bitopic N,O Ligands: an Experimental and Theoretical Study. Inorg Chem 2011; 50:6557-66. [DOI: 10.1021/ic200271e] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cécile Marie
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Manuel Miguirditchian
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Dominique Guillaumont
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Arnaud Tosseng
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Claude Berthon
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Philippe Guilbaud
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Magali Duvail
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Julia Bisson
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Denis Guillaneux
- CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SCPS, F-30207 Bagnols-sur-Cèze, France
| | - Muriel Pipelier
- Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation (CEISAM), UFR des Sciences et des Techniques, Université de Nantes, UMR CNRS 6230, 2 rue de la Houssinière, F-44322 Nantes, France
| | - Didier Dubreuil
- Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation (CEISAM), UFR des Sciences et des Techniques, Université de Nantes, UMR CNRS 6230, 2 rue de la Houssinière, F-44322 Nantes, France
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18
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Freidzon AY, Scherbinin AV, Bagaturyants AA, Alfimov MV. Ab Initio Study of Phosphorescent Emitters Based on Rare-Earth Complexes with Organic Ligands for Organic Electroluminescent Devices. J Phys Chem A 2011; 115:4565-73. [PMID: 21504216 DOI: 10.1021/jp111303a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexandra Ya. Freidzon
- Photochemistry Center, Russian Academy of Sciences, ul. Novatorov 7a, Moscow, 119421 Russia
| | | | | | - Michael V. Alfimov
- Photochemistry Center, Russian Academy of Sciences, ul. Novatorov 7a, Moscow, 119421 Russia
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19
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Smentek L. Lanthanides caged by the organic chelates; structural properties. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:143202. [PMID: 21422507 DOI: 10.1088/0953-8984/23/14/143202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The structure, in particular symmetry, geometry and morphology of organic chelates coordinated with the lanthanide ions are analyzed in the present review. This is the first part of a complete presentation of a theoretical description of the properties of systems, which are widely used in technology, but most of all, in molecular biology and medicine. The discussion is focused on the symmetry and geometry of the cages, since these features play a dominant role in the spectroscopic activity of the lanthanides caged by organic chelates. At the same time, the spectroscopic properties require more formal presentation in the language of Racah algebra, and deserve a separate analysis. In addition to the parent systems of DOTA, DOTP, EDTMP and CDTMP presented here, their modifications by various antennas are analyzed. The conclusions that have a strong impact upon the theory of the energy transfer and the sensitized luminescence of these systems are based on the results of numerical density functional theory calculations.
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Affiliation(s)
- Lidia Smentek
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, USA
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20
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Over D, de la Lande A, Zeng X, Parisel O, Reinaud O. Replacement of a Nitrogen by a Phosphorus Donor in Biomimetic Copper Complexes: a Surprising and Informative Case Study with Calix[6]arene-Based Cryptands. Inorg Chem 2009; 48:4317-30. [DOI: 10.1021/ic802253t] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Diana Over
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université Paris Descartes (Paris 5), 45 rue des Saints Pères, 75006 Paris, France, Laboratoire de Chimie Théorique, UMR CNRS 7616, Université Pierre et Marie Curie (Paris 6), 4, place Jussieu, F-75252, Paris Cedex 05, France, Key Laboratory of Display Materials & Photoelectrical Devices (Ministry of Education), School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China, and
| | - Aurélien de la Lande
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université Paris Descartes (Paris 5), 45 rue des Saints Pères, 75006 Paris, France, Laboratoire de Chimie Théorique, UMR CNRS 7616, Université Pierre et Marie Curie (Paris 6), 4, place Jussieu, F-75252, Paris Cedex 05, France, Key Laboratory of Display Materials & Photoelectrical Devices (Ministry of Education), School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China, and
| | - Xianshun Zeng
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université Paris Descartes (Paris 5), 45 rue des Saints Pères, 75006 Paris, France, Laboratoire de Chimie Théorique, UMR CNRS 7616, Université Pierre et Marie Curie (Paris 6), 4, place Jussieu, F-75252, Paris Cedex 05, France, Key Laboratory of Display Materials & Photoelectrical Devices (Ministry of Education), School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China, and
| | - Olivier Parisel
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université Paris Descartes (Paris 5), 45 rue des Saints Pères, 75006 Paris, France, Laboratoire de Chimie Théorique, UMR CNRS 7616, Université Pierre et Marie Curie (Paris 6), 4, place Jussieu, F-75252, Paris Cedex 05, France, Key Laboratory of Display Materials & Photoelectrical Devices (Ministry of Education), School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China, and
| | - Olivia Reinaud
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Université Paris Descartes (Paris 5), 45 rue des Saints Pères, 75006 Paris, France, Laboratoire de Chimie Théorique, UMR CNRS 7616, Université Pierre et Marie Curie (Paris 6), 4, place Jussieu, F-75252, Paris Cedex 05, France, Key Laboratory of Display Materials & Photoelectrical Devices (Ministry of Education), School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China, and
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21
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Elliott P, Furche F, Burke K. Excited States from Time-Dependent Density Functional Theory. REVIEWS IN COMPUTATIONAL CHEMISTRY 2009. [DOI: 10.1002/9780470399545.ch3] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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22
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Ottonelli M, Musso G, Dellepiane G. Environment Effects on the CO Vibrational Shifts in Erbium Complexes: A Quantum Chemical Study. J Phys Chem A 2008; 112:11960-4. [DOI: 10.1021/jp807203n] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Massimo Ottonelli
- Università di Genova, Dipartimento di Chimica e Chimica Industriale, Via Dodecaneso 31, I-16146 Genova, Italy
| | - Gianfranco Musso
- Università di Genova, Dipartimento di Chimica e Chimica Industriale, Via Dodecaneso 31, I-16146 Genova, Italy
| | - Giovanna Dellepiane
- Università di Genova, Dipartimento di Chimica e Chimica Industriale, Via Dodecaneso 31, I-16146 Genova, Italy
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23
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Kolarik Z. Complexation and Separation of Lanthanides(III) and Actinides(III) by Heterocyclic N-Donors in Solutions. Chem Rev 2008; 108:4208-52. [DOI: 10.1021/cr078003i] [Citation(s) in RCA: 372] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zdenek Kolarik
- Consultant, Kolberger Strasse 9, D-76139 Karlsruhe, Germany
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24
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Buz’ko VY, Sukhno IV, Buz’ko MB, Polushin AA, Panyushkin VT. Study of the structure and stability of aqua ions La(H2O) n 3+ (n = 8, 9) by ab initio methods. RUSS J INORG CHEM+ 2008. [DOI: 10.1134/s0036023608080172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Hess, BA, Kȩdziorski A, Smentek L, Bornhop DJ. Role of the Antenna in Tissue Selective Probes Built of Lanthanide−Organic Chelates. J Phys Chem A 2008; 112:2397-407. [DOI: 10.1021/jp075736y] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- B. Andes Hess,
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37325, and Institute of Physics, Nicolaus Copernicus University, Toruń, Poland
| | - A. Kȩdziorski
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37325, and Institute of Physics, Nicolaus Copernicus University, Toruń, Poland
| | - L. Smentek
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37325, and Institute of Physics, Nicolaus Copernicus University, Toruń, Poland
| | - D. J. Bornhop
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37325, and Institute of Physics, Nicolaus Copernicus University, Toruń, Poland
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26
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Aiga F, Iwanaga H, Amano A. Density Functional Theory Investigation of Novel Eu(III) Complexes with Asymmetric Bis(phosphine) Oxides. J Phys Chem A 2007; 111:12141-5. [DOI: 10.1021/jp076820g] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fumihiko Aiga
- Corporate Research & Development Center, Toshiba Corporation, 1 Komukai-Toshiba-cho, Saiwai-ku, Kawasaki 212-8582, Japan
| | - Hiroki Iwanaga
- Corporate Research & Development Center, Toshiba Corporation, 1 Komukai-Toshiba-cho, Saiwai-ku, Kawasaki 212-8582, Japan
| | - Akio Amano
- Corporate Research & Development Center, Toshiba Corporation, 1 Komukai-Toshiba-cho, Saiwai-ku, Kawasaki 212-8582, Japan
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27
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Georgieva I, Trendafilova N, Aquino AJA, Lischka H. Theoretical study of metal-ligand interaction in Sm(III), Eu(III), and Tb(III) complexes of coumarin-3-carboxylic acid in the gas phase and solution. Inorg Chem 2007; 46:10926-36. [PMID: 17990875 DOI: 10.1021/ic7016616] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The interaction of lanthanide(III) cations (Ln(III) = Sm(III), Eu(III), and Tb(III)) with the deprotonated form of the coumarin-3-carboxylic acid (cca-) has been investigated by density functional theory (DFT/B3LYP) and confirmed by reference MP2 and CCSD(T) computations. Solvent effects on the geometries and stabilities of the Ln(III) complexes were computed using a combination of water clusters and a continuum solvation model. The following two series of systems were considered: (i) Ln(cca)2+, Ln(cca)2+, Ln(cca)3 and (ii) Ln(cca)(H2O)2Cl2, Ln(cca)2(H2O)2Cl, Ln(cca)3. The strength and character of the Ln(III)-cca- bidentate bonding were characterized by calculated Ln-O bond lengths, binding energies, ligand deformation energies, energy partitioning analysis, sigma-donation contributions, and natural population analyses. The energy decomposition calculations predicted predominant electrostatic interaction terms to the Ln-cca bonding (ionic character) and showed variations of the orbital interaction term (covalent contributions) for the Ln-cca complexes studied. Electron distribution analysis suggested that the covalent contribution comes mainly from the interaction with the carboxylate moiety of cca-.
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Affiliation(s)
- Ivelina Georgieva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
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28
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Jacquemin D, Femenias A, Chermette H, Ciofini I, Adamo C, André JM, Perpète EA. Assessment of several hybrid DFT functionals for the evaluation of bond length alternation of increasingly long oligomers. J Phys Chem A 2007; 110:5952-9. [PMID: 16640395 DOI: 10.1021/jp060541w] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We have optimized the ground-state geometry of nine series of increasingly long oligomers, using six hybrid density functionals (O3LYP, B3LYP, B97-1, B98, PBE0, and BHHLYP) combined with three different atomic basis sets. In each case, the obtained bond length alternation (BLA) is compared to the corresponding MP2 values. Three phenomenological categories have been set up. In the first, the BLA exponentially decreases, in which case all the tested functionals give results in very good agreement with MP2. In the second category fall the symmetric oligomers that, due to the Peierls theorem, show large BLA. For these chains, BHHLYP tends to give too large and quickly converging BLA wrt chain length, while O3LYP often leads to the opposite misjudgments, and the remaining hybrids provide valuable results. In the third category, one finds asymmetric compounds presenting significantly unequal bond lengths, for which the divergence between DFT and wave function approaches can be dramatic. Indeed, all hybrids yield too small BLA values, especially for long chain lengths. We also study the effect of chain conformation on the BLA.
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Affiliation(s)
- Denis Jacquemin
- Laboratoire de Chimie Théorique Appliquée, Facultés Universitaires Notre-Dame de la Paix, Namur, Belgium.
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29
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Cornard JP, Lapouge C. Absorption spectra of caffeic acid, caffeate and their 1:1 complex with Al(III): density functional theory and time-dependent density functional theory investigations. J Phys Chem A 2007; 110:7159-66. [PMID: 16737266 DOI: 10.1021/jp060147y] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The UV-visible absorption spectra of caffeic acid, caffeate and of the predominant complex obtained in the presence of aluminum ion (1:1 stoichiometry) have been simulated by using the time-dependent density functional theory (TD-DFT) technique, taking into account solvent effects. Whereas the use of the B3LYP hybrid XC functional with the 6-31+G(d,p) basis set allows us to reproduce fairly well the essential features of the experimental spectra of caffeic acid and caffeate, it is necessary to introduce an effective core potential to properly describe the aluminum ion and its environment and to obtain a good agreement between theoretical and experimental spectra of the 1:1 complex. The ligand presents two potential complexing sites in competition. The results of our calculations show that the aluminum ion coordinates preferentially at the level of the catecholate group, and the [Al(H(2)O)(4)(CA)], [Al(H(2)O)(3)(OH)(CA)](-) and [Al(H(2)O)(4)(HCA)](+) complexed forms could coexist in aqueous solution at pH = 5.
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Affiliation(s)
- Jean-Paul Cornard
- LASIR, CNRS UMR 8516, Université des Sciences et Technologies de Lille, d'Ascq, France.
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30
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Ramírez-Solís A. On the performance of local, semilocal, and nonlocal exchange-correlation functionals on transition metal molecules. J Chem Phys 2007; 126:224105. [PMID: 17581042 DOI: 10.1063/1.2739539] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The lowest singlet-triplet transition (X (1)Sigma+-(3)Sigma+) of AgI has been used to study systematically the performance of local [local density approximation (LDA)], semilocal [generalized gradient approximation (GGA)], and nonlocal (semiempiric hybrid and meta)-type exchange-correlation functionals on a transition metal molecule where dynamic electronic correlation effects are essential. Previous benchmark ab initio calculations showed that the triplet ground state possesses a shallow well in the Franck-Condon region before becoming repulsive at longer internuclear distance [A. Ramirez-Solis, J. Chem. Phys. 118, 104 (2003)]. Several density functional theory (DFT) descriptions are compared with the benchmark complete active space self-consistent-field+averaged coupled pair functional results, using the same relativistic effective core potentials and optimized Gaussian basis sets. A rather unreliable performance of exchange-correlation functionals was found when ascending the various rungs in DFT Jacob's ladder for this complex molecule. While some of the simpler (LDA and GGA) functionals correctly predict the presence of a short-distance maximum for the (3)Sigma+ state, more sophisticated hybrid and meta-functionals lead to totally repulsive or oscillating curves for the ground triplet state. A thorough discussion addressing the local versus nonlocal character of the exchange and correlation effects on the triplet potential curve is presented. The author concludes that any new efforts directed at producing more accurate exchange-correlation functionals must take into account the more complex electronic structure arising in transition metal molecules, whether these efforts follow the dominant pragmatic semiempiric trend or the more philosophically correct nonempiric pathway to develop better exchange-correlation functionals; only then will the Kohn-Sham version of DFT make the necessary improvements to correctly describe the electronic structure of complex transition metal systems.
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Affiliation(s)
- A Ramírez-Solís
- Department of Chemistry and Biochemistry, University of California at Santa Barbara, Santa Barbara, California 93106-9510, USA.
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31
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Modelling of electronic absorption spectrum of Pb(II)–caffeate complex by time-dependent density functional theory. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.02.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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Guillaumont D, Bazin H, Benech JM, Boyer M, Mathis G. Luminescent Eu(III) and Gd(III) Trisbipyridine Cryptates: Experimental and Theoretical Study of the Substituent Effects. Chemphyschem 2007; 8:480-8. [PMID: 17226873 DOI: 10.1002/cphc.200600669] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Synthesis, absorption spectra and luminescebce properties of a series of lanthanide trisbipyridine cryptates Ln within R-Bpy x R-Bpy x R-Bpy, where Ln = Eu, Gd and R = H, COOH, COOCH3, CONH(CH2)2NH2 are described. Comparison of the unsubstituted parent compound with the substituted compounds shows that bipyridine substitution doesn't alter significantly the photophysical properties of the lanthanide cryptate. The absorption maximum is slightly red-shifted when three bipyridines are substituted, whereas substituting one bipyridines has a negligible effect on the absorption spectra. The experimental triplet state energy is between 21600 and 22 100 cm(-1) for the series of compounds and the luminescence lifetimes at 77 K are between 0.5 and 0.8 ms in HO2 and equal to 1.7 ms in D2O. The experimental characterizations are completed by DFT and TD-DFT calculations to assess the ability of these approaches to predict absorption maxima, triplet state energies and structural parameters of lanthanide cryptates and to characterize the electronic structure of the excited states. The calculations on the unsubstituted parent and substituted compounds show that absorption maxima and lowest 3pipi* triplet state energies can be accurately determined from density functional theory (DFT) and time-dependent (TD) DFT calculations.
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Affiliation(s)
- Dominique Guillaumont
- Direction de l'Energie Nucléaire, Commissariat a l'Energie Atomique, Valrhô, BP 17171, 30207 Bagnols/Cèze, France.
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34
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Kostova I, Peica N, Kiefer W. Theoretical and spectroscopic studies of lanthanum (III) complex of 5-aminoorotic acid. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2006.05.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Petit L, Borel A, Daul C, Maldivi P, Adamo C. A Theoretical Characterization of Covalency in Rare Earth Complexes through Their Absorption Electronic Properties: f−f Transitions. Inorg Chem 2006; 45:7382-8. [PMID: 16933941 DOI: 10.1021/ic060149x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Experimental uncertainties concerning the coordination mode of trivalent plutonium in concentrated LiCl have led us to theoretically evaluate the f-f transitions of a series of rare earth aquo and chloro complexes. The calculation of Pr(III), U(III), Np(III), and Pu(III) systems' spectra was undertaken using the LFDFT (ligand field density functional theory) route that combines the backgrounds of ligand field (LF) theory with Kohn-Sham orbitals. LF parameters are fitted to previous DFT calculations, thus preventing the use of empirical data. The f-f transitions values are globally well predicted, but the lack of accurate experimental references can sometimes hinder reliable comparisons. Despite this, the nephelauxetic effect from aquo to chloro complexes is clearly observed through both spectral red shifts and the decrease in F2, the Slater-Condon parameter. Accordingly, this work provides the first theoretical characterization of covalency in trivalent f elements through their electronic spectra.
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Affiliation(s)
- Laurence Petit
- Laboratoire de Reconnaissance Ionique, DRFMC/LCIB (UMR_E 3 CEA-UJF), CEA-Grenoble, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
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36
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Zbiri M, Daul CA, Wesolowski TA. Effect of the f-Orbital Delocalization on the Ligand-Field Splitting Energies in Lanthanide-Containing Elpasolites. J Chem Theory Comput 2006; 2:1106-11. [DOI: 10.1021/ct060035a] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mohamed Zbiri
- Département de Chimie, Université de Fribourg - 9, Chemin du Musée, Pérolles, CH-1700 Fribourg, Switzerland, and Département de Chimie, Université de Genève - 30, quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
| | - Claude A. Daul
- Département de Chimie, Université de Fribourg - 9, Chemin du Musée, Pérolles, CH-1700 Fribourg, Switzerland, and Département de Chimie, Université de Genève - 30, quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
| | - Tomasz A. Wesolowski
- Département de Chimie, Université de Fribourg - 9, Chemin du Musée, Pérolles, CH-1700 Fribourg, Switzerland, and Département de Chimie, Université de Genève - 30, quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
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37
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Peica N, Kostova I, Kiefer W. Theoretical and experimental studies on binding mode of 3,5-pyrazoledicarboxylic acid in its new La(III) complex. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2006.01.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Smentek L, Andes Hess B, Cross JP, Charles Manning H, Bornhop DJ. Density-functional theory structures of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid complexes for ions across the lanthanide series. J Chem Phys 2005; 123:244302. [PMID: 16396532 DOI: 10.1063/1.2139997] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The use of organically chelated lanthanides in diagnosis and treatment is a rapidly growing field in medicine. In order to gain a deeper understanding into the properties of these chelates, particularly spectroscopic, density-functional calculations have been performed on a series of lanthanide ions chelated with 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid. Based on the results of these calculations, it has been concluded that the local symmetry experienced by the chelated lanthanide ion may be treated as being axial, which will make the interpretation of their spectroscopic properties greatly simplified. It has also been suggested that the so-called "capping" water molecule at the ninth coordination position of the lanthanide is hydrogen bonded to the acetate oxygens of the sidearms, rather than coordinated as the ninth ligand of the lanthanide.
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Affiliation(s)
- Lidia Smentek
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA
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39
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Aiga F, Iwanaga H, Amano A. Density Functional Theory Investigation of Eu(III) Complexes with β-Diketonates and Phosphine Oxides: Model Complexes of Fluorescence Compounds for Ultraviolet LED Devices. J Phys Chem A 2005; 109:11312-6. [PMID: 16331916 DOI: 10.1021/jp0553535] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The density functional theory was employed to investigate Eu(III) complexes with three beta-diketonates and two phosphine oxides (complex M1: Eu(bdk)3(TPPO)2, complex M2: Eu(bdk)3(TMPO)2, and complex M3: Eu(bdk)3(TPPO)(TMPO)) deemed to be the model complexes of the fluorescence compounds for the ultraviolet LED devices we have recently developed. For each complex, two minimum energy points corresponding to two different optimized geometries (structures A and B) have been found, and the difference of the energy between two minimum energy points is found to be quite small (less than 1 kcal/mol). Vertical excitation energies and oscillator strengths for each complex at two optimized geometries have been obtained by the time-dependent density functional theory, and the character of the excited states has been investigated. For complex M3, the absorption edge is red-shifted, and the oscillator strengths are relatively large. The efficiency of intersystem crossing and energy transfer from the triplet excited state to the Eu(III) ion is considered by calculating DeltaE(ISC) (the energy difference between the first singlet excited state and the first triplet excited state) and DeltaE(ET) (the difference between the excitation energy of the complex for the first triplet excited state and the emission energy of the Eu(III) ion for 5D to 7F).
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Affiliation(s)
- Fumihiko Aiga
- Corporate Research & Development Center, Toshiba Corporation, 1 Komukai-Toshiba-cho, Saiwai-ku, Kawasaki 212-8582, Japan.
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40
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Denecke MA, Rossberg A, Panak PJ, Weigl M, Schimmelpfennig B, Geist A. Characterization and Comparison of Cm(III) and Eu(III) Complexed with 2,6-Di(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine Using EXAFS, TRFLS, and Quantum-Chemical Methods. Inorg Chem 2005; 44:8418-25. [PMID: 16270980 DOI: 10.1021/ic0511726] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The complexation of Cm(III) and Eu(III) with 2,6-di(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine (n-C3H7-BTP) in nonaqueous organic solution is studied with extended X-ray absorption spectroscopy. Bond lengths are the same in both complexes. Quantum-chemical calculations performed at different levels support this finding. On the other hand, the Cm.(n-C3H7-BTP)3 complex is formed at much lower ligand-to-metal concentration ratio than the Eu.(n-C3H7-BTP)3 complex, as shown by time-resolved laser-induced fluorescence spectroscopy. This is in good agreement with n-C3H7-BTP's high selectivity for trivalent actinides over lanthanides in liquid-liquid extraction.
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Affiliation(s)
- Melissa A Denecke
- Forschungszentrum Karlsruhe GmbH, Institut für Nukleare Entsorgung, P.O. Box 3640, 76021 Karlsruhe, Germany
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