1
|
Ghidinelli S, Abbate S, Santoro E, Belviso S, Longhi G. Characterization of "Free Base" and Metal Complex Thioalkyl Porphyrazines by Magnetic Circular Dichroism and TDDFT Calculations. J Phys Chem B 2021; 125:264-280. [PMID: 33351631 PMCID: PMC8016196 DOI: 10.1021/acs.jpcb.0c09277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
![]()
UV–vis
absorption and magnetic circular dichroism (MCD)
spectra of octakis thioethyl “free base” porphyrazine
H2OESPz and its metal complexes MOESPz (M = Mg, Zn, Ni,
Pd, Cu), as well as of [MnOESPz(SH)] were recorded. In the last case,
MCD proved to have quite good sensitivity to the coordination of this
complex with 1-methylimidazole (1-mim) in benzene. Time-dependent
density functional theory (TDDFT) calculations were carried out for
the considered porphyrazine complexes and showed good performance
on comparing with MCD and UV–vis experimental spectra, even
in the open-shell Cu and Mn cases. Calculations accounted for the
red shift observed in the thioalkyl compounds and allowed us to reveal
the role of sulfur atoms in spectroscopically relevant molecular orbitals
and to highlight the importance of the conformations of the thioethyl
external groups. Calculated MCD spectra of [MnOESPz(SH)] confirm the
Mn(III) → Mn(II) redox process, which leads to the [Mn(OESPz)(1-mim)2] species, and the relevance of the spin state for MCD is
revealed.
Collapse
Affiliation(s)
- Simone Ghidinelli
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy.,Research Unit of Brescia, CNR, Istituto Nazionale di Ottica (INO), c/o CSMT, via Branze 45, 25123 Brecia, Italy
| | - Ernesto Santoro
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy.,Dipartimento di Scienze, Università della Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Sandra Belviso
- Dipartimento di Scienze, Università della Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale, Università di Brescia, Viale Europa 11, 25123 Brescia, Italy.,Research Unit of Brescia, CNR, Istituto Nazionale di Ottica (INO), c/o CSMT, via Branze 45, 25123 Brecia, Italy
| |
Collapse
|
2
|
Oosterbaan KJ, White AF, Hait D, Head-Gordon M. Generalized single excitation configuration interaction: an investigation into the impact of the inclusion of non-orthogonality on the calculation of core-excited states. Phys Chem Chem Phys 2020; 22:8182-8192. [DOI: 10.1039/c9cp06592j] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In this paper, we investigate different non-orthogonal generalizations of the configuration interaction with single substitutions (CIS) method and their impact on the calculation of core-excited states.
Collapse
Affiliation(s)
| | - Alec F. White
- Division of Chemistry and Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
| | - Diptarka Hait
- Department of Chemistry
- University of California
- Berkeley
- USA
- Chemical Sciences Division
| | - Martin Head-Gordon
- Department of Chemistry
- University of California
- Berkeley
- USA
- Chemical Sciences Division
| |
Collapse
|
3
|
Oosterbaan KJ, White AF, Head-Gordon M. Non-Orthogonal Configuration Interaction with Single Substitutions for Core-Excited States: An Extension to Doublet Radicals. J Chem Theory Comput 2019; 15:2966-2973. [DOI: 10.1021/acs.jctc.8b01259] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katherine J. Oosterbaan
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alec F. White
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| |
Collapse
|
4
|
Anderson CM, Aboelenen AM, Jensen MP. Competitive Intramolecular Amination as a Clock for Iron-Catalyzed Nitrene Transfer. Inorg Chem 2019; 58:1107-1119. [DOI: 10.1021/acs.inorgchem.8b02284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Caitlin M. Anderson
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, United States
| | - Ahmed M. Aboelenen
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, United States
| | - Michael P. Jensen
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, United States
| |
Collapse
|
5
|
Vibrational coherence transfer in the ultrafast intersystem crossing of a diplatinum complex in solution. Proc Natl Acad Sci U S A 2018; 115:E6396-E6403. [PMID: 29941568 DOI: 10.1073/pnas.1719899115] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We investigate the ultrafast transient absorption response of tetrakis(μ-pyrophosphito)diplatinate(II), [Pt2(μ-P2O5H2)4]4- [hereafter abbreviated Pt(pop)], in acetonitrile upon excitation of its lowest singlet 1A2u state. Compared with previously reported solvents [van der Veen RM, Cannizzo A, van Mourik F, Vlček A, Jr, Chergui M (2011) J Am Chem Soc 133:305-315], a significant shortening of the intersystem crossing (ISC) time (<1 ps) from the lowest singlet to the lowest triplet state is found, allowing for a transfer of vibrational coherence, observed in the course of an ISC in a polyatomic molecule in solution. Density functional theory (DFT) quantum mechanical/molecular mechanical (QM/MM) simulations of Pt(pop) in acetonitrile and ethanol show that high-lying, mostly triplet, states are strongly mixed and shifted to lower energies due to interactions with the solvent, providing an intermediate state (or manifold of states) for the ISC. This suggests that the larger the solvation energies of the intermediate state(s), the shorter the ISC time. Because the latter is smaller than the pure dephasing time of the vibrational wave packet, coherence is conserved during the spin transition. These results underscore the crucial role of the solvent in directing pathways of intramolecular energy flow.
Collapse
|
6
|
Haase PAB, Repisky M, Komorovsky S, Bendix J, Sauer SPA. Relativistic DFT Calculations of Hyperfine Coupling Constants in 5d Hexafluorido Complexes: [ReF 6 ] 2- and [IrF 6 ] 2. Chemistry 2018; 24:5124-5133. [PMID: 29027277 PMCID: PMC5969236 DOI: 10.1002/chem.201704653] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Indexed: 11/08/2022]
Abstract
The performance of relativistic density functional theory (DFT) methods has been investigated for the calculation of the recently measured hyperfine coupling constants of hexafluorido complexes [ReF6 ]2- and [IrF6 ]2- . Three relativistic methods were employed at the DFT level of theory: the 2-component zeroth-order regular approximation (ZORA) method, in which the spin-orbit coupling was treated either variationally (EV ZORA) or as a perturbation (LR ZORA), and the 4-component Dirac-Kohn-Sham (DKS) method. The dependence of the results on the basis set and the choice of exchange-correlation functional was studied. Furthermore, the effect of varying the amount of Hartree-Fock exchange in the hybrid functionals was investigated. The LR ZORA and DKS methods combined with DFT led to very similar deviations (about 20 %) from the experimental values for the coupling constant of complex [ReF6 ]2- by using hybrid functionals. However, none of the methods were able to reproduce the large anisotropy of the hyperfine coupling tensor of complex [ReF6 ]2- . For [IrF6 ]2- , the EV ZORA and DKS methods reproduced the experimental tensor components with deviations of ≈10 and ≈5 % for the hybrid functionals, whereas the LR ZORA method predicted the coupling constant to be around one order of magnitude too large owing to the combination of large spin-orbit coupling and very low excitation energies.
Collapse
Affiliation(s)
- Pi A B Haase
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
- Van Swinderen Institute, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Michal Repisky
- CTCC, Department of Chemistry, University of Tromsø, N-9037, Tromsø, Norway
| | - Stanislav Komorovsky
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska Cesta 9, SK-84536, Bratislava, Slovakia
| | - Jesper Bendix
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
| | - Stephan P A Sauer
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen Ø, Denmark
| |
Collapse
|
7
|
Berezin AS, Vinogradova KA, Nadolinny VA, Sukhikh TS, Krivopalov VP, Nikolaenkova EB, Bushuev MB. Temperature- and excitation wavelength-dependent emission in a manganese(ii) complex. Dalton Trans 2018; 47:1657-1665. [PMID: 29327747 DOI: 10.1039/c7dt04535b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A mononuclear manganese(ii) complex with a chelating 4-(3,5-diphenyl-1H-pyrazol-1-yl)-6-(piperidin-1-yl)pyrimidine ligand (L), [MnL2Cl2]·H2O, shows intriguing excitation wavelength-dependent emission. Depending on the excitation wavelength, the complex demonstrates three emission bands with the maxima at 380 nm, 440 nm and 495 nm. The 380 nm and 440 nm emissions originate from the π → π* and n → π* ligand-centered transitions. The long-wave 495 nm emission with microsecond lifetimes is related to the d-d transitions and/or metal-to-ligand and halogen-to-ligand charge transfer. The emission behavior of this complex is strongly temperature-dependent: upon cooling from 300 K down to 77 K, the intensity of emission considerably increases. The enhancement of the luminescence upon cooling is accompanied by the appearance of the vibrational structure. This complex is the first example of manganese(ii) complexes demonstrating excitation wavelength-dependent emission.
Collapse
Affiliation(s)
- Alexey S Berezin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.
| | | | | | | | | | | | | |
Collapse
|
8
|
Carlotto S, Floreano L, Cossaro A, Dominguez M, Rancan M, Sambi M, Casarin M. The electronic properties of three popular high spin complexes [TM(acac) 3, TM = Cr, Mn, and Fe] revisited: an experimental and theoretical study. Phys Chem Chem Phys 2018; 19:24840-24854. [PMID: 28868556 DOI: 10.1039/c7cp04461e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The occupied and unoccupied electronic structures of three high spin TM(acac)3 (TM = Cr, Mn, and Fe) complexes (I, II, and III, respectively) were studied by revisiting their literature vapour-phase He(i) and, when available, He(ii) photoemission (PE) spectra and by means of original near-edge X-ray absorption fine structure (NEXAFS) spectroscopic data recorded at the O K-edge (OK-edge) and TM L2,3-edges (TML2,3-edges). The assignments of the vapour-phase He(i)/He(ii) PE spectra were guided by the results of spin-unrestricted non-relativistic Slater transition state calculations, while the OK-edge and TML2,3-edge spectroscopic pieces of evidence were analysed by exploiting the results of spin-unrestricted scalar-relativistic time-dependent density functional theory (DFT) and DFT/ROCIS calculations, respectively. Although the actual symmetry (D3, in the absence of any Jahn-Teller distortion) of the title molecules allowed an extensive mixing between TM t2g-like and eg-like atomic orbitals, the use of the Nalewajski-Mrozek TM-O bond multiplicity index combined with a thorough analysis of the ground state (GS) outcomes allowed the assessment of the TM-O bond weakening associated with the progressive TM 3d-based eg-like orbital filling. The experimental information provided by OK-edge spectra was rather poor; nevertheless, the combined use of symmetry, orbitals and spectra allowed us (i) to rationalise minor differences characterizing spectral features along the series, (ii) to quantify the contribution provided by the ligand-to-metal-charge-transfer (LMCT) excitations to the different spectral features, and (iii) to recognize the t2g-/eg-like nature of the TM 3d-based orbitals involved in LMCT transitions. As far as the TML2,3-edge spectra and the DFT/ROCIS results were concerned, the lowest lying I,IIL3 spectral features included states having either the GS spin multiplicity (S(I) = 3/2, S(II) = 2) or, at higher excitation energies (EEs), states with ΔS = ±1. In contrast to that, only states with ΔS = 0, -1 significantly contributed to the IIIL3 spectral pattern. Along the whole series, the L3 higher EE side was systematically characterized by states involving TM2p → π4 MLCT excitations; as such, coupled-single excitations with ΔS = 0 were involved in I and II, while single MLCT TM2p → π4 transitions with ΔS = -1 were involved in III.
Collapse
Affiliation(s)
- S Carlotto
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Francesco Marzolo 1, I-35131 Padova, Italy.
| | | | | | | | | | | | | |
Collapse
|
9
|
Zink JR, Abucayon EG, Ramuglia AR, Fadamin A, Eilers JE, Richter‐Addo GB, Shaw MJ. Electrochemical Investigation of the Kinetics of Chloride Substitution upon Reduction of [Ru(porphyrin)(NO)Cl] Complexes in Tetrahydrofuran. ChemElectroChem 2017. [DOI: 10.1002/celc.201701001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jeremy R. Zink
- Department of Chemistry Southern Illinois University Edwardsville Box 1652 Edwardsville, Illinois 62026 USA
- Department of Chemistry and Biochemistry University of Oklahoma 101 Stephenson Parkway Norman, Oklahoma 73019 USA
| | - Erwin G. Abucayon
- Department of Chemistry and Biochemistry University of Oklahoma 101 Stephenson Parkway Norman, Oklahoma 73019 USA
| | - Anthony R. Ramuglia
- Department of Chemistry Southern Illinois University Edwardsville Box 1652 Edwardsville, Illinois 62026 USA
| | - Arghavan Fadamin
- Department of Chemistry Southern Illinois University Edwardsville Box 1652 Edwardsville, Illinois 62026 USA
| | - James E. Eilers
- Department of Chemistry Southern Illinois University Edwardsville Box 1652 Edwardsville, Illinois 62026 USA
| | - George B. Richter‐Addo
- Department of Chemistry and Biochemistry University of Oklahoma 101 Stephenson Parkway Norman, Oklahoma 73019 USA
| | - Michael J. Shaw
- Department of Chemistry Southern Illinois University Edwardsville Box 1652 Edwardsville, Illinois 62026 USA
| |
Collapse
|
10
|
Alfurayj IA, Young VG, Jensen MP. Structural Characterization of Thermochromic and Spin Equilibria in Solid-State Ni(detu)4Cl2 (detu = N,N'-Diethylthiourea). Inorg Chem 2016; 55:1469-79. [PMID: 26836378 DOI: 10.1021/acs.inorgchem.5b02203] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Consecutive thermochromic lattice distortional and spin crossover equilibria in solid-state Ni(detu)4Cl2 (detu = N,N'-diethylthiourea) are investigated by variable-temperature X-ray crystallography (173-333 K), DFT calculations, and differential scanning calorimetry. Thermochromism and anomalous magnetism were reported previously (S. L. Holt, Jr., et al. J. Am. Chem. Soc. 1964, 86, 519-520); the latter was attributed to equilibration of a singlet ground state and a thermally accessible triplet state, but structural data were not obtained. A crystal structure at 173(2) K revealed [Ni(detu)4](2+) centers with distorted planar ligation of nickel(II) to the four sulfur atoms, with an average Ni-S bond length of 2.226(3) Å. The nickel ion was displaced out-of-plane by 0.334 Å toward a proximal apical chloride at a nonbonding distance of 3.134(1) Å. Asymmetry in the trans S-Ni-S angles was coupled to a monoclinic ↔ tetragonal lattice distortion (T(1/2) = 254 ± 11 K), resulting in thermochromism. Spin crossover occurs by tetragonal modulation of nickel(II) with approach of the proximal chloride at higher temperatures (T(1/2) = 383 ± 18 K), which is consistent with a contraction of -0.096(4) Å in the Ni···Cl separation observed at 293 K. A high-spin (S = 1) square-pyramidal [Ni(dmtu)4Cl](+) model (dmtu = N,N'-dimethylthiourea) was optimized by DFT calculations, which estimated limiting equatorial Ni-S bond lengths of 2.45 Å and an apical Ni-Cl bond of 2.43 Å. Electronic spectra of the spin isomers were calculated by TD-DFT methods. Assignment of the FTIR spectrum was assisted by frequency calculations and isotope substitution.
Collapse
Affiliation(s)
- Ibrahim A Alfurayj
- Department of Chemistry and Biochemistry, Ohio University , Athens, Ohio 45701, United States
| | - Victor G Young
- X-ray Crystallographic Facility, Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Michael P Jensen
- Department of Chemistry and Biochemistry, Ohio University , Athens, Ohio 45701, United States
| |
Collapse
|
11
|
Ljubić I, Kivimäki A, Coreno M. An experimental NEXAFS and computational TDDFT and ΔDFT study of the gas-phase core excitation spectra of nitroxide free radical TEMPO and its analogues. Phys Chem Chem Phys 2016; 18:10207-17. [DOI: 10.1039/c6cp00490c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Core excitation (NEXAFS) C 1s, N 1s, and O 1s gas-phase spectra of stable nitroxide free radical TEMPO and two of its amide-substituted analogues are assigned from the onset of the absorptions to the vicinity of the core-ionization thresholds using the theoretical TDDFT and ΔDFT methods.
Collapse
Affiliation(s)
- Ivan Ljubić
- Department of Physical Chemistry
- Ruđer Bošković Institute
- HR-10000 Zagreb
- Croatia
| | | | | |
Collapse
|
12
|
Mangione G, Sambi M, Carlotto S, Vittadini A, Ligorio G, Timpel M, Pasquali L, Giglia A, Nardi MV, Casarin M. Electronic structure of CuTPP and CuTPP(F) complexes: a combined experimental and theoretical study II. Phys Chem Chem Phys 2016; 18:24890-904. [DOI: 10.1039/c6cp03956a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
CuTPP and CuTPP(F) thick films deposited on Au(111) have been studied by coupling NEXAFS spectroscopy at the C/N/FK-edges and CuL2,3-edges and spin-unrestricted TD-DFT calculations.
Collapse
Affiliation(s)
- Giulia Mangione
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- 35131 Padova
- Italy
| | - Mauro Sambi
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- 35131 Padova
- Italy
| | - Silvia Carlotto
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- 35131 Padova
- Italy
| | - Andrea Vittadini
- Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia – ICMATE
- 35131 Padova
- Italy
| | - Giovanni Ligorio
- Institute for Physics
- Supramolecular Systems Division “SMS” Humboldt Universität zu Berlin
- 12489 Berlin
- Germany
| | - Melanie Timpel
- Institute for Physics
- Supramolecular Systems Division “SMS” Humboldt Universität zu Berlin
- 12489 Berlin
- Germany
- Istituto dei Materiali per l'Elettronica ed il Magnetismo
| | - Luca Pasquali
- Dipartimento di Ingegneria “E. Ferrari”
- Università degli Studi di Modena e Reggio Emilia
- 41125 Modena
- Italy
- Istituto Officina dei Materiali
| | - Angelo Giglia
- Istituto Officina dei Materiali
- IOM-CNR
- Trieste
- Italy
- Istituto di Struttura della Materia
| | - Marco Vittorio Nardi
- Institute for Physics
- Supramolecular Systems Division “SMS” Humboldt Universität zu Berlin
- 12489 Berlin
- Germany
- Istituto dei Materiali per l'Elettronica ed il Magnetismo
| | - Maurizio Casarin
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- 35131 Padova
- Italy
- Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia – ICMATE
| |
Collapse
|
13
|
Synthesis, structure and properties of tris(1-ethyl-4-isopropyl-imidazolyl-κN)phosphine copper(II). Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Deb T, Anderson CM, Ma H, Petersen JL, Young VG, Jensen MP. Scorpionato Halide Complexes [(Tp
Ph,Me
)Ni–X] [X = Cl, Br, I; Tp
Ph,Me
= Hydrotris(3‐phenyl‐5‐methyl‐1‐pyrazolyl)borate]: Structures, Spectroscopy, and Pyrazole Adducts. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402897] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tapash Deb
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, U.S.A., http://www.ohio.edu/chemistry/faculty/jensen.php
| | - Caitlin M. Anderson
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, U.S.A., http://www.ohio.edu/chemistry/faculty/jensen.php
| | - Huaibo Ma
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, U.S.A., http://www.ohio.edu/chemistry/faculty/jensen.php
| | - Jeffrey L. Petersen
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, U.S.A
| | - Victor G. Young
- X‐ray Crystallographic Laboratory, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, U.S.A
| | - Michael P. Jensen
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, U.S.A., http://www.ohio.edu/chemistry/faculty/jensen.php
| |
Collapse
|
15
|
Rancan M, Tessarolo J, Casarin M, Zanonato PL, Quici S, Armelao L. Double Level Selection in a Constitutional Dynamic Library of Coordination Driven Supramolecular Polygons. Inorg Chem 2014; 53:7276-87. [DOI: 10.1021/ic500573e] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Marzio Rancan
- Department
of Chemical Sciences and INSTM, University of Padova, via Marzolo
1, 35131 Padova, Italy
- IENI−CNR, via
Marzolo 1, 35131 Padova, Italy
| | - Jacopo Tessarolo
- Department
of Chemical Sciences and INSTM, University of Padova, via Marzolo
1, 35131 Padova, Italy
- IENI−CNR, via
Marzolo 1, 35131 Padova, Italy
| | - Maurizio Casarin
- Department
of Chemical Sciences and INSTM, University of Padova, via Marzolo
1, 35131 Padova, Italy
| | - Pier Luigi Zanonato
- Department
of Chemical Sciences and INSTM, University of Padova, via Marzolo
1, 35131 Padova, Italy
| | - Silvio Quici
- ISTM−CNR, via C. Golgi, 19, 20133, Milano, Italy
| | - Lidia Armelao
- Department
of Chemical Sciences and INSTM, University of Padova, via Marzolo
1, 35131 Padova, Italy
- IENI−CNR, via
Marzolo 1, 35131 Padova, Italy
| |
Collapse
|
16
|
Sinha B, Goswami T, Paul S, Misra A. The impact of surface structure and band gap on the optoelectronic properties of Cu2O nanoclusters of varying size and symmetry. RSC Adv 2014. [DOI: 10.1039/c3ra45387a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
17
|
de Visser SP, Quesne MG, Martin B, Comba P, Ryde U. Computational modelling of oxygenation processes in enzymes and biomimetic model complexes. Chem Commun (Camb) 2014; 50:262-82. [DOI: 10.1039/c3cc47148a] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
18
|
DFT/TD-DFT analysis of structural, electrochemical and optical data from mononuclear osmium and heterobinuclear osmium–ruthenium alkynyl complexes. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Synthesis, structure, and properties of bis(2-(1-ethyl-1H-imidazol-4-yl)acetate) copper(II). Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.06.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
20
|
Nardi MV, Detto F, Aversa L, Verucchi R, Salviati G, Iannotta S, Casarin M. Electronic properties of CuPc and H2Pc: an experimental and theoretical study. Phys Chem Chem Phys 2013; 15:12864-81. [DOI: 10.1039/c3cp51224j] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Ricciardi G, Soldatova AV, Rosa A. The role of the metal ion in the photophysical behavior of Co(II), Ni(II), and Cu(II) octabutoxynaphthalocyanines: insights from ultra-fast time-resolved spectroscopy and DFT/TDDFT calculations. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424610002598] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The photo-deactivation mechanism of the MNc(OBu)8 (M = Co, Ni, Cu) series of complexes is reviewed, with special emphasis on the role played by the central metal. Ultra-fast transient absorption experiments and Density Functional Theory and time-dependent Density Functional Theory calculations consistently show that the central metal modifies the photo-deactivation mechanism of the investigated complexes by inducing substantial changes in the nature and energy of the excited states lying between the photo-generated state and the ground state.
Collapse
Affiliation(s)
- Giampaolo Ricciardi
- Dipartimento di Chimica, Università della Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Alexandra V. Soldatova
- Center for Photochemical Sciences, Bowling Green State University, Bowling Green, OH 43403, USA
- Department of Chemistry, Bowling Green State University, Bowling Green, OH 43403, USA
| | - Angela Rosa
- Dipartimento di Chimica, Università della Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| |
Collapse
|
22
|
Alperovich I, Smolentsev G, Moonshiram D, Jurss JW, Concepcion JJ, Meyer TJ, Soldatov A, Pushkar Y. Understanding the electronic structure of 4d metal complexes: from molecular spinors to L-edge spectra of a di-Ru catalyst. J Am Chem Soc 2011; 133:15786-94. [PMID: 21866913 DOI: 10.1021/ja207409q] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
L(2,3)-edge X-ray absorption spectroscopy (XAS) has demonstrated unique capabilities for the analysis of the electronic structure of di-Ru complexes such as the blue dimer cis,cis-[Ru(III)(2)O(H(2)O)(2)(bpy)(4)](4+) water oxidation catalyst. Spectra of the blue dimer and the monomeric [Ru(NH(3))(6)](3+) model complex show considerably different splitting of the Ru L(2,3) absorption edge, which reflects changes in the relative energies of the Ru 4d orbitals caused by hybridization with a bridging ligand and spin-orbit coupling effects. To aid the interpretation of spectroscopic data, we developed a new approach, which computes L(2,3)-edges XAS spectra as dipole transitions between molecular spinors of 4d transition metal complexes. This allows for careful inclusion of the spin-orbit coupling effects and the hybridization of the Ru 4d and ligand orbitals. The obtained theoretical Ru L(2,3)-edge spectra are in close agreement with experiment. Critically, existing single-electron methods (FEFF, FDMNES) broadly used to simulate XAS could not reproduce the experimental Ru L-edge spectra for the [Ru(NH(3))(6)](3+) model complex nor for the blue dimer, while charge transfer multiplet (CTM) calculations were not applicable due to the complexity and low symmetry of the blue dimer water oxidation catalyst. We demonstrated that L-edge spectroscopy is informative for analysis of bridging metal complexes. The developed computational approach enhances L-edge spectroscopy as a tool for analysis of the electronic structures of complexes, materials, catalysts, and reactive intermediates with 4d transition metals.
Collapse
Affiliation(s)
- Igor Alperovich
- Department of Physics, Purdue University, 525 Northwestern Avenue, West Lafayette, Indiana 47907, United States
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Stewart H, Wu G, Ma L, Barclay M, Vieira AD, King A, Cox H, Stace AJ. Ultraviolet Photofragmentation Spectroscopy of Alkaline Earth Dication Complexes with Pyridine and 4-Picoline (4-Methyl pyridine). J Phys Chem A 2011; 115:6948-60. [DOI: 10.1021/jp112171j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Hamish Stewart
- Department of Physical and Theoretical Chemistry, School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kindom
| | - Guohua Wu
- Department of Physical and Theoretical Chemistry, School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kindom
| | - Lifu Ma
- Department of Physical and Theoretical Chemistry, School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kindom
| | - Michael Barclay
- Department of Chemistry and Biochemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
| | - Andreia Dias Vieira
- Department of Chemistry and Biochemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
| | - Andrew King
- Department of Chemistry and Biochemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
| | - Hazel Cox
- Department of Chemistry and Biochemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
| | - Anthony J. Stace
- Department of Physical and Theoretical Chemistry, School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, United Kindom
| |
Collapse
|
24
|
Roy S, Roy S, Saha S, Majumdar R, Dighe RR, Jemmis ED, Chakravarty AR. Cobalt(ii) complexes of terpyridine bases as photochemotherapeutic agents showing cellular uptake and photocytotoxicity in visible light. Dalton Trans 2011; 40:1233-42. [DOI: 10.1039/c0dt00223b] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
25
|
Shaw MJ, Cranford DL, Rodgers KW, Eilers JE, Noble B, Warhausen AJ, Richter-Addo GB. Facile Determination of the Spectra of Unstable Electrode Products Using Simultaneous Fiber-Optic Chronoabsorptometry and Chronoamperometry. Inorg Chem 2010; 49:9590-8. [DOI: 10.1021/ic1012654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael J. Shaw
- Department of Chemistry, Box 1652, Southern Illinois University at Edwardsville, Edwardsville, Illinois 62026
| | - Daniel L. Cranford
- Department of Chemistry, Box 1652, Southern Illinois University at Edwardsville, Edwardsville, Illinois 62026
| | - Kenneth W. Rodgers
- Department of Chemistry, Box 1652, Southern Illinois University at Edwardsville, Edwardsville, Illinois 62026
| | - James E. Eilers
- Department of Chemistry, Box 1652, Southern Illinois University at Edwardsville, Edwardsville, Illinois 62026
| | - Bradley Noble
- Department of Electrical and Computer Engineering, Box 1801, Southern Illinois University at Edwardsville, Edwardsville, Illinois 62026
| | - Adam J. Warhausen
- Department of Chemistry and Biochemistry, University of Oklahoma, 620 Parrington Oval, Norman, Oklahoma 73019
| | - George B. Richter-Addo
- Department of Chemistry and Biochemistry, University of Oklahoma, 620 Parrington Oval, Norman, Oklahoma 73019
| |
Collapse
|
26
|
Cox H, Stace AJ. Recent advances in the visible and UV spectroscopy of metal dication complexes. INT REV PHYS CHEM 2010. [DOI: 10.1080/0144235x.2010.511774] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
27
|
Calhorda MJ, Ceamanos C, Crespo O, Gimeno MC, Laguna A, Larraz C, Vaz PD, Villacampa MD. Heteropolynuclear Gold Complexes with Metallophilic Interactions: Modulation of the Luminescent Properties. Inorg Chem 2010; 49:8255-69. [DOI: 10.1021/ic100413x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maria José Calhorda
- Departamento de Química e Bioquímica, CQB, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Carmen Ceamanos
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Olga Crespo
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - M. Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Antonio Laguna
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Carmen Larraz
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Pedro D. Vaz
- Departamento de Química e Bioquímica, CQB, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - M. Dolores Villacampa
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| |
Collapse
|
28
|
Hernandez-Marin E, Seth M, Ziegler T. Density Functional Theory Study of the Magnetic Circular Dichroism Spectra of Molybdenyl Complexes. Inorg Chem 2010; 49:6066-76. [DOI: 10.1021/ic100624q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Michael Seth
- Department of Chemistry, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - Tom Ziegler
- Department of Chemistry, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| |
Collapse
|
29
|
Wu G, Stewart H, Lemon FD, Cox H, Stace AJ. The UV photofragmentation spectroscopy of the metal dication complex [Mn(pyridine)4]2+. Mol Phys 2010. [DOI: 10.1080/00268976.2010.482541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
30
|
Santi S, Durante C, Donoli A, Bisello A, Orian L, Ganis P, Ceccon A, Benetollo F. Intervalence Charge Transfer in Cationic Heterotrinuclear Fe(III)−Rh(I)−Cr(0) Triads of the Polyaromatic Cyclopentadienyl−Indenyl Ligand. Organometallics 2010. [DOI: 10.1021/om900903e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Saverio Santi
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Christian Durante
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Alessandro Donoli
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Annalisa Bisello
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Laura Orian
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Paolo Ganis
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Alberto Ceccon
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Franco Benetollo
- CNR, Istituto di Chimica Inorganica e delle Superfici, C.so Stati Uniti 4, 35127 Padova, Italy
| |
Collapse
|
31
|
Hernandez-Marin E, Seth M, Ziegler T. Density Functional Theory Study of the Electron Paramagnetic Resonance Parameters and the Magnetic Circular Dichroism Spectrum for Model Compounds of Dimethyl Sulfoxide Reductase. Inorg Chem 2010; 49:1566-76. [DOI: 10.1021/ic901888q] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Elizabeth Hernandez-Marin
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Michael Seth
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Tom Ziegler
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| |
Collapse
|
32
|
Chattopadhyay S, Deb T, Petersen JL, Young VG, Jensen MP. Steric Titration of Arylthiolate Coordination Modes at Pseudotetrahedral Nickel(II) Centers. Inorg Chem 2009; 49:457-67. [DOI: 10.1021/ic901347p] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Tapash Deb
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701
| | - Jeffrey L. Petersen
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506
| | - Victor G. Young
- X-ray Crystallographic Laboratory, Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455
| | - Michael P. Jensen
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701
| |
Collapse
|
33
|
Bachler V. Time-dependent density functional calculations on the electronic spectra of the neutral nickel complex [Ni(LISQ)2] (LISQ= 3,5-di-tert-butyl-o-diiminobenzosemiquinonate(1−)) and its monoanion and dication. J Comput Chem 2009; 30:2087-98. [DOI: 10.1002/jcc.21220] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
34
|
Rosa A, Ricciardi G. A time-dependent density functional theory (TDDFT) interpretation of the optical spectra of zinc phthalocyanine π-cation and π-anion radicals. CAN J CHEM 2009. [DOI: 10.1139/v09-066] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The UV–visible and near-IR spectra of the zinc phthalocyanine π-cation and π-anion radicals, [ZnPc(–1)]•+ and [ZnPc(–3)]•–, are investigated by time-dependent density functional theory (TDDFT) calculations using the pure, asymptotically correct, statistical average of (model) orbital potentials (SAOP) functional. The nature and intensity of the main spectral features are highlighted and interpreted on the basis of the ground-state electronic structure of the complexes. Similarities and differences with previous TDDFT/B3LYP results are discussed. TDDFT/SAOP results for the π-anion radical prove to be in excellent agreement with the solution spectra and generally in line with deconvolution analyses of solution absorption and magnetic circular dichroism (MCD) spectra. On the basis of these results a novel interpretation of the Q-band system is proposed. For the π-cation radical TDDFT/SAOP calculations provide a satisfactory description of the UV region of the spectrum. However, they do not reproduce accurately the energy and intensity of the Q band observed at 825 nm. The description of the Q-band region appears to be complicated by the presence of spurious non-Gouterman transitions. Furthermore, the calculations, either in the gas phase or in solution, do not account for the broad absorption near 500 nm that has been suggested to arise from a nondegenerate, z-polarized 2A2g excited state. Theory and experiment can be reconciled if the presence of an axial ligand such as CN– is explicitly considered in the calculations. TDDFT/SAOP results for the axially ligated [ZnPc(–1)(CN)]• species indicate that the 500 nm feature is related to the axial ligation induced symmetry lowering of the π-cation radical and this band is assigned to a z-polarized transition associated with the hole in the 2a1u.
Collapse
Affiliation(s)
- Angela Rosa
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro 85, 85100 Potenza, Italy
| | - Giampaolo Ricciardi
- Dipartimento di Chimica, Università della Basilicata, Via N. Sauro 85, 85100 Potenza, Italy
| |
Collapse
|
35
|
Sun SL, Qin CS, Qiu YQ, Yang GC, Su ZM. Theoretical investigation of structures, electronic spectra and nonlinear optical properties of gold-pentacene (Au2C22H14) complexes. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2008.11.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
36
|
Fan J, Seth M, Autschbach J, Ziegler T. Circular Dichroism of Trigonal Dihedral Chromium(III) Complexes: A Theoretical Study based on Open-Shell Time-Dependent Density Functional Theory. Inorg Chem 2008; 47:11656-68. [DOI: 10.1021/ic801229c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jing Fan
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada, T2N 1N4, and Department of Chemistry, University at Buffalo, State University of New York, 312 Natural Science Complexes, Buffalo, New York 14260-30000
| | - Michael Seth
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada, T2N 1N4, and Department of Chemistry, University at Buffalo, State University of New York, 312 Natural Science Complexes, Buffalo, New York 14260-30000
| | - Jochen Autschbach
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada, T2N 1N4, and Department of Chemistry, University at Buffalo, State University of New York, 312 Natural Science Complexes, Buffalo, New York 14260-30000
| | - Tom Ziegler
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada, T2N 1N4, and Department of Chemistry, University at Buffalo, State University of New York, 312 Natural Science Complexes, Buffalo, New York 14260-30000
| |
Collapse
|
37
|
Jaszewski AR, Stranger R, Pace RJ. Time-Dependent DFT Studies of Metal Core-Electron Excitations in Mn Complexes. J Phys Chem A 2008; 112:11223-34. [DOI: 10.1021/jp803286c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Adrian R. Jaszewski
- Department of Chemistry, Faculty of Science, Australian National University, Canberra ACT 0200, Australia
| | - Rob Stranger
- Department of Chemistry, Faculty of Science, Australian National University, Canberra ACT 0200, Australia
| | - Ronald J. Pace
- Department of Chemistry, Faculty of Science, Australian National University, Canberra ACT 0200, Australia
| |
Collapse
|
38
|
|
39
|
Guan W, Yang G, Liu C, Song P, Fang L, Yan L, Su Z. Reversible Redox-Switchable Second-Order Optical Nonlinearity in Polyoxometalate: A Quantum Chemical Study of [PW11O39(ReN)]n− (n = 3−7). Inorg Chem 2008; 47:5245-52. [DOI: 10.1021/ic8001527] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Wei Guan
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Guochun Yang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Chunguang Liu
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Ping Song
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Liang Fang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Likai Yan
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Zhongmin Su
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| |
Collapse
|
40
|
González-Baró AC, Pis-Diez R, Piro OE, Parajón-Costa BS. Crystal structures, theoretical calculations, spectroscopic and electrochemical properties of Cr(III) complexes with dipicolinic acid and 1,10-phenantroline. Polyhedron 2008. [DOI: 10.1016/j.poly.2007.10.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
41
|
Wu G, Norris C, Stewart H, Cox H, Stace AJ. State-resolved UV photofragmentation spectrum of the metal dication complex [Zn(pyridine)4]2+. Chem Commun (Camb) 2008:4153-5. [DOI: 10.1039/b806469e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
42
|
Santi S, Orian L, Donoli A, Durante C, Bisello A, Ganis P, Ceccon A, Crociani L, Benetollo F. Charge Transfer through Isomeric Unsaturated Hydrocarbons. Redox Switchable Optical Properties and Electronic Structure of Substituted Indenes with a Pendant Ferrocenyl. Organometallics 2007. [DOI: 10.1021/om700673m] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
43
|
Santi S, Orian L, Durante C, Bencze EZ, Bisello A, Donoli A, Ceccon A, Benetollo F, Crociani L. Metal–Metal Electronic Coupling insyn andanti Stereoisomers of Mixed-Valent (FeCp)2-, (RhL2)2-, and (FeCp)(RhL2)-as-Indacenediide Ions. Chemistry 2007; 13:7933-47. [PMID: 17616957 DOI: 10.1002/chem.200700052] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The extent of metal-metal electronic coupling was quantified for a series of syn and anti stereoisomers of (FeCp)(2)-, (RhL(2))(2)- and (FeCp)(RhL(2))- (L(2)=1,5-cyclooctadiene (cod), L=CO) as-indacenediide mixed-valent ions by spectroelectrochemical and DFT studies. The effect of the syn/anti orientation of the metal units with respect to the planar aromatic ligand indicates that electron transfer occurs through the bridge rather than through space. The nature of the metal was found to be crucial: while homobimetallic diiron species are localised valence-trapped ions (Class II), the dirhodium analogues are almost delocalised mixed-valent ions (borderline and Class III). Finally, despite their redox asymmetry, even in the heterobimetallic iron-rhodium as-indacenediide complexes, strong metal-metal coupling is present. In fact, oxidation of the iron centre is accompanied by electron transfer from rhodium to iron and formation of a reactive 17-electron rhodium site. syn and anti Fe-Rh as-indacenediide complexes are rare examples of heterobimetallic systems which can be classified as borderline Class II/Class III species.
Collapse
Affiliation(s)
- Saverio Santi
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova via Marzolo 1, 35131 Padova, Italy.
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Guan J, Puskar L, Esplugas RO, Cox H, Stace AJ. Ligand field photofragmentation spectroscopy of [Ag(L)N]2+ complexes in the gas phase: Experiment and theory. J Chem Phys 2007; 127:064311. [PMID: 17705600 DOI: 10.1063/1.2764049] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Experiments have been undertaken to record photofragmentation spectra from a series of [Ag(L)N]2+ complexes in the gas phase. Spectra have been obtained for silver(II) complexed with the ligands (L): acetone, 2-pentanone, methyl-vinyl ketone, pyridine, and 4-methyl pyridine (4-picoline) with N in the range of 4-7. A second series of experiments using 1,1,1,3-fluoroacetone, acetonitrile, and CO2 as ligands failed to show any evidence of photofragmentation. Interpretation of the experimental data has come from time-dependent density functional theory (TDDFT), which very successfully accounts for trends in the spectra in terms of subtle differences in the properties of the ligands. Taking a sample of three ligands, acetone, pyridine, and acetonitrile, the calculations show all the spectral transitions to involve ligand-to-metal charge transfer, and that wavelength differences (or lack of spectra) arise from small changes in the energies of the molecular orbitals concerned. The calculations account for an absence in the spectra of any effects due to Jahn-Teller distortion, and they also reveal structural differences between complexes where the coordinating atom is either oxygen or nitrogen that have implications for the stability of silver(II) compounds. Where possible, comparisons have also been made with the physical properties of condensed phase silver(II) complexes.
Collapse
Affiliation(s)
- Jingang Guan
- Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom
| | | | | | | | | |
Collapse
|
45
|
van Duijnen PT, Greene SN, Richards NGJ. Time-dependent density functional theory/discrete reaction field spectra of open shell systems: The visual spectrum of [FeIII(PyPepS)2]− in aqueous solution. J Chem Phys 2007; 127:045105. [PMID: 17672728 DOI: 10.1063/1.2751164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report the calculated visible spectrum of [FeIII(PyPepS)2]- in aqueous solution. From all-classical molecular dynamics simulations on the solute and 200 water molecules with a polarizable force field, 25 solute/solvent configurations were chosen at random from a 50 ps production run and subjected the systems to calculations using time-dependent density functional theory (TD-DFT) for the solute, combined with a solvation model in which the water molecules carry charges and polarizabilities. In each calculation the first 60 excited states were collected in order to span the experimental spectrum. Since the solute has a doublet ground state several excitations to states are of type "three electrons in three orbitals," each of which gives rise to a manifold of a quartet and two doublet states which cannot properly be represented by single Slater determinants. We applied a tentative scheme to analyze this type of spin contamination in terms of Delta and Delta transitions between the same orbital pairs. Assuming the associated states as pure single determinants obtained from restricted calculations, we construct conformation state functions (CFSs), i.e., eigenfunctions of the Hamiltonian Sz and S2, for the two doublets and the quartet for each Delta,Delta pair, the necessary parameters coming from regular and spin-flip calculations. It appears that the lower final states remain where they were originally calculated, while the higher states move up by some tenths of an eV. In this case filtering out these higher states gives a spectrum that compares very well with experiment, but nevertheless we suggest investigating a possible (re)formulation of TD-DFT in terms of CFSs rather than determinants.
Collapse
Affiliation(s)
- Piet Th van Duijnen
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA.
| | | | | |
Collapse
|
46
|
Nemykin VN, Olsen JG, Perera E, Basu P. Synthesis, molecular and electronic structure, and TDDFT and TDDFT-PCM study of the solvatochromic properties of (Me2Pipdt)Mo(CO)4 complex (Me2Pipdt = N,N'-dimethylpiperazine-2,3-dithione). Inorg Chem 2007; 45:3557-68. [PMID: 16634586 DOI: 10.1021/ic051653p] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis, spectroscopic, and structural characterization of the (Me2Pipdt)Mo(CO)4 complex (Me2Pipdt = N,N'-piperazine-2,3-dithione) are presented in this paper. The title complex crystallizes in the P2(1)/n space group with a = 25.541(3) A, b = 10.3936(14) A, c = 10.9012(12) A, beta = 92.261(9) degrees , V = 2891.6(6) A(3), and Z = 8. Gas- and solution-phase structural and electronic features of (Me2Pipdt)Mo(CO)4 and Me2Pipdt have been investigated using density functional theory. The molecular structure underscores the flexibility of the NC(S)C(S)N fragment in both the free ligand and the metal complex. On the basis of structural, spectroscopic, and theoretical results, the bidentate ligand in (Me2Pipdt)Mo(CO)4 is considered to be in the dithione, not dithiolate, form. Time-dependent density functional theory has been used for the investigation of the excited states and solvatochromic properties of (Me2Pipdt)Mo(CO)4. The calculated vertical excitation energies in solution are consistent with the experimental data, showing that the metal-to-ligand charge-transfer transitions, in both the visible and UV regions, dominate over the ligand-based pi-pi transitions.
Collapse
Affiliation(s)
- Victor N Nemykin
- Department of Chemistry and Biochemistry, University of Minnesota at Duluth, Duluth, Minnesota 55812, USA.
| | | | | | | |
Collapse
|
47
|
Yang G, Fang L, Tan K, Shi S, Su Z, Wang R. Quantum Chemical Study of Structures, Electronic Spectrum, and Nonlinear Optical Properties of Gold−Pentacene Complexes. Organometallics 2007. [DOI: 10.1021/om060955b] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Guochun Yang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People's Republic of China, and College of Environment Ecosystem and Engineering, Changchun University, Changchun 130022, Jilin, People's Republic of China
| | - Liang Fang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People's Republic of China, and College of Environment Ecosystem and Engineering, Changchun University, Changchun 130022, Jilin, People's Republic of China
| | - Ke Tan
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People's Republic of China, and College of Environment Ecosystem and Engineering, Changchun University, Changchun 130022, Jilin, People's Republic of China
| | - Shaoqing Shi
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People's Republic of China, and College of Environment Ecosystem and Engineering, Changchun University, Changchun 130022, Jilin, People's Republic of China
| | - Zhongmin Su
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People's Republic of China, and College of Environment Ecosystem and Engineering, Changchun University, Changchun 130022, Jilin, People's Republic of China
| | - Rongshun Wang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People's Republic of China, and College of Environment Ecosystem and Engineering, Changchun University, Changchun 130022, Jilin, People's Republic of China
| |
Collapse
|
48
|
Santi S, Orian L, Durante C, Bisello A, Benetollo F, Crociani L, Ganis P, Ceccon A. Tuning the Electronic Communication in Heterobimetallic Mixed-Valence Ions of (1-Ferrocenyl)- and (2-Ferrocenyl)indenyl Rhodium Isomers. Chemistry 2007; 13:1955-68. [PMID: 17171728 DOI: 10.1002/chem.200600724] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A series of heterobimetallic complexes of general structure [RhL(2){eta(5)-(2-ferrocenyl)indenyl}] (L(2)=cod, nbd, L=CO; cod=cyclooctadiene; nbd=norbornadiene) has been synthesised with the aim of tuning the metal-metal interaction in their mixed-valence ions generated both by chemical and electrochemical oxidation, and the results are compared with those obtained for [RhL(2){eta(5)-(1-ferrocenyl)indenyl}] isomers. Crystallographic studies and DFT calculations provide a detailed description of the structural and electronic features of these complexes evidencing a significant difference in the extent of planarity of the flexible bridging ligand between the 1- and 2-ferrocenyl isomers. Independent experimental probes, in particular the potential splitting in the cyclic voltammograms and the IT bands in the near-IR spectra, are rationalised in the framework of Marcus-Hush theory and at quantum chemistry level by DFT and TD-DFT methods. These methods allow us to establish a trend based on the magnitude of iron-rhodium electronic coupling H(ab) ranging from valence trapped to almost delocalised ions. The quasi planar bridge and the olefin ancillary ligands make [Rh(nbd){eta(5)-(2-ferrocenyl)indenyl}](+) and [Rh(cod){eta(5)-(2-ferrocenyl)indenyl}](+) rare examples of heterobimetallic systems which can be classified as borderline Class II/Class III species.
Collapse
Affiliation(s)
- Saverio Santi
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, via Marzolo 1, 35131 Padua, Italy.
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Roy LE, Hughbanks T. Electronic Transitions in [Re6S8X6]4- (X = Cl, Br, I): Results from Time-Dependent Density Functional Theory and Solid-State Calculations. Inorg Chem 2006; 45:8273-82. [PMID: 16999427 DOI: 10.1021/ic061061m] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Relativistic time-dependent density functional theory (TDDFT) calculations were performed on the excited states of the [Re6S8X6](4-) (X = Cl, Br, I) series. For all members of the series, the lowest excited states in the spectra do not correspond to a ligand-to-metal (or ligand-to-cluster) excitation but rather a cluster-cluster transition from the HOMO e(g) to antibonding t(1u) orbitals with only a modest admixture of Re-X sigma* character. These results lead to a re-evaluation of the role of the axial ligand in these compounds. The calculated excitation energies reproduce the experimental absorption and emission spectra. This work also confirms previous TDDFT calculations on the emission energies. Results for discrete cluster ions are compared with those obtained from calculations in the solid state in Cs4[Re6S8X6].CsX (X = Cl, Br) and Cs4[Re6S8I6].2CsI. Significant differences are seen in the relatively higher energies of the antibonding t(1u) orbital in the solid-state case, and an inversion in the orbital character of the two allowed absorptions is calculated. The e(g) (HOMO)-to-a(2g) (LUMO) orbital energy differences corresponding to the emission transition are quite comparable for the solid state and discrete cluster calculations, and both overestimate the observed emission energy by the same margin.
Collapse
Affiliation(s)
- Lindsay E Roy
- Department of Chemistry, Texas A&M University, P.O. Box 30012 College Station, Texas 77842-3012, USA
| | | |
Collapse
|
50
|
Seth M, Ziegler T. Calculation of excitation energies of open-shell molecules with spatially degenerate ground states. I. Transformed reference via an intermediate configuration Kohn-Sham density-functional theory and applications to d1 and d2 systems with octahedral and tetrahedral symmetries. J Chem Phys 2005; 123:144105. [PMID: 16238372 DOI: 10.1063/1.2047553] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A method for calculating the UV-vis spectra of molecules with spatially degenerate ground states using time-dependent density-functional theory (TDDFT) is proposed. The new transformed reference via an intermediate configuration Kohn-Sham TDDFT (TRICKS-TDDFT) method avoids the difficulties caused by the multireference nature of spatially degenerate states by rather than utilizing the ground state instead taking a nondegenerate excited state with desirable properties as the reference for the TDDFT calculation. The scope and practical application of the method are discussed. Like all open-shell TDDFT calculations this method at times suffers from the inability to produce transitions to states that are eigenfunctions of the total spin operator. A technique for alleviating this difficulty to some extent is proposed. The applicability and accuracy of the TRICKS-TDDFT method is demonstrated through example calculations of several d(1) and d(2) transition metal complexes with tetrahedral and octahedral symmetries. For the most part, the results of these calculations are similar in quality to to those obtained from standard TDDFT calculations.
Collapse
Affiliation(s)
- Michael Seth
- Department of Chemistry, University of Calgary, Calgary, AB T2N-1N4, Canada
| | | |
Collapse
|