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Yalouz S, Robert V. Orthogonally Constrained Orbital Optimization: Assessing Changes of Optimal Orbitals for Orthogonal Multireference States. J Chem Theory Comput 2023; 19:1388-1392. [PMID: 36790330 DOI: 10.1021/acs.jctc.2c01144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
The choice of molecular orbitals is decisive in configuration interaction calculations. In this letter, a democratic description of the ground and excited states follows an orthogonally constrained orbital optimization to produce state-specific orbitals. The approach faithfully recovers the excitation energy of a four-electron Hubbard trimer, whereas state-average calculations can miss the value by a factor 2.5. The method emphasizes the need for orbital optimization to reduce configuration interaction expansions and to reach spectroscopic accuracy.
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Affiliation(s)
- Saad Yalouz
- Laboratoire de Chimie Quantique, Institut de Chimie, CNRS/Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Vincent Robert
- Laboratoire de Chimie Quantique, Institut de Chimie, CNRS/Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
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2
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Kisała J, Tomaszewska A, Kolek P. Non-stoichiometric magnetite as catalyst for the photocatalytic degradation of phenol and 2,6-dibromo-4-methylphenol - a new approach in water treatment. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:1531-1540. [PMID: 36605607 PMCID: PMC9764857 DOI: 10.3762/bjnano.13.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Phenol and 2,6-dibromo-4-methylphenol (DBMP) were removed from aqueous solutions by ozonolysis and photocatalysis. The properties and structural features of the catalysts and the organic compounds are discussed, as well as their influence on the degradation reaction rates. The degradation efficiency in photocatalytic processes was higher for DBMP (98%) than for phenol (approximately 50%). This proves the high efficiency of magnetite in the photocatalytic degradation of halogenated aromatic pollutants. The particularly high degradation efficiency regarding halogen-containing DBMP molecules and the yield of bromide ions indicate that DBMP degradation follows a mixed reduction-oxidation mechanism. DBMP molecules interact with the magnetite surface, enabling them to react with the available electrons, and, as a result, bromide ions can be released. The results confirm that magnetite is an effective photocatalyst in the degradation of halogenated aromatic pollutants.
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Affiliation(s)
- Joanna Kisała
- Department of Biology, Institute of Biology and Biotechnology, University of Rzeszow, Pigonia 1, PL-35-310 Rzeszow, Poland
| | - Anna Tomaszewska
- Department of Biotechnology, Institute of Biology and Biotechnology, University of Rzeszow, Pigonia 1, PL-35-310 Rzeszow, Poland
| | - Przemysław Kolek
- Institute of Physics, University of Rzeszow, 1 Pigonia Street, PL-35-310, Rzeszów, Poland
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3
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Atanasov M, Spiller N, Neese F. Magnetic exchange and valence delocalization in a mixed valence [Fe 2+Fe 3+Te 2] + complex: insights from theory and interpretations of magnetic and spectroscopic data. Phys Chem Chem Phys 2022; 24:20760-20775. [PMID: 36043991 DOI: 10.1039/d2cp02975h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mixed valence binuclear Fe2.5+-Fe2.5+ (Robin-Day Class III) transition metal complex, [Fe2.5+μTe2Fe2.5+]1-, composed of two FeN2Te2 pseudo-tetrahedral units with μ-bridging Te2- ligands was reported to exist in an unprecedented S = 3/2 ground state (Nature Chemistry, https://doi.org/10.1038/s41557-021-00853-5). For this and the homologous complexes containing Se2- and S2-, the Anderson-Hasegawa double exchange spin-Hamiltonian was broadly used to interpret the corresponding structural, spectroscopic and magnetic data. First principles multireference ab initio calculations are used here to simulate magnetic and spectroscopic EPR data; analysis of the results affords a rationale for the stabilization of the S = 3/2 ground state of the Fe2 pair. Complete Active Space Self-Consistent Field (CASSCF) calculations and dynamical correlation accounted for by means of N-Electron Valence Perturbation Theory to Second Order (NEVPT2) reproduce well the g-factors determined from simulations of X-band EPR spectra. A crucial technical tool to achieve these results is: (i) use of a localized orbital formulation of the many-particle problem at the scalar-relativistic CASSCF step; (ii) choice of state averaging over states of a given spin (at the CASCI/NEVPT2 step); and (iii) accounting for spin-orbit coupling within the non-relativistic Born-Oppenheimer (BO) many-particle basis using Quasi-Degenerate Perturbation Theory (QDPT). The inclusion of the S = 5/2 spin manifold reproduced the observed increase in the magnetic susceptibility (χT) in the high temperature range (T > 100 K), which is explained by thermal population of the S = 5/2 excited state at energy 160 cm-1 above the S = 3/2 ground state. Theoretical values of χT from experimentally reported data points in the temperature range from 3 to 30 K were further computed and analyzed using a model which takes spin-phonon coupling into account. The model considerations and the computational protocols of this study are generally applicable to any Class I/II mixed valence dimer. The work can potentially stimulate further experimental and theoretical work on bi- and oligonuclear transition metal complexes of importance to bioinorganic chemistry and life sciences.
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Affiliation(s)
- M Atanasov
- Department of Molecular Theory and Spectroscopy, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany. .,Institute of General and Inorganic Chemistry, Bulgarian Academy of Science, Akad-Georgi Bontchev Str. Bl.11, 1113-Sofia, Bulgaria
| | - N Spiller
- Department of Molecular Theory and Spectroscopy, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany.
| | - F Neese
- Department of Molecular Theory and Spectroscopy, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany.
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4
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Dubourdeaux P, Blondin G, Latour JM. Mixed Valence (μ-Phenoxido) Fe II Fe III et Fe III Fe IV Compounds: Electron and Proton Transfers. Chemphyschem 2021; 23:e202100399. [PMID: 34633731 DOI: 10.1002/cphc.202100399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 10/03/2021] [Indexed: 11/08/2022]
Abstract
Mixed-valence non-heme diiron centers are present at the active sites of a few enzymes and confer them interesting reactivities with the two ions acting in concert. Related (μ-phenoxido)diiron complexes have been developed as enzyme mimics. They exhibit very rich spectroscopic properties enabling independent monitoring of each individual ion, which proved useful for mechanistic studies of catalytic hydrolysis and oxidation reactions. In our studies of such complexes, we observed that these compounds give rise to a wide variety of electron transfers (intervalence charge transfer), proton transfers (tautomerism), coupled electron and proton transfers (H. abstraction and PCET). In this minireview, we present and analyze the main results illustrating the latter aspects.
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Affiliation(s)
| | - Geneviève Blondin
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-LCBM/pmb, F-38000, Grenoble, France
| | - Jean-Marc Latour
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-LCBM/pmb, F-38000, Grenoble, France
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Kathir RK, de Graaf C, Broer R, Havenith RWA. Reduced Common Molecular Orbital Basis for Nonorthogonal Configuration Interaction. J Chem Theory Comput 2020; 16:2941-2951. [PMID: 32279493 PMCID: PMC7222100 DOI: 10.1021/acs.jctc.9b01144] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Electron and charge transfers are part of many vital processes in nature and technology. Ab initio descriptions of these processes provide useful insights that can be utilized for applications. A combination of the embedded cluster material model and nonorthogonal configuration interaction (NOCI), in which the cluster wave functions are expanded in many-electron basis functions (MEBFs) consisting of spin-adapted, antisymmetrized products of multiconfigurational wave functions of fragments (which are usually molecules) in the cluster, appears to provide a compromise between accuracy and calculation time. Additional advantages of this NOCI-Fragments approach are the chemically convenient interpretation of the wave function in terms of molecular states, and the direct accessibility of electronic coupling between diabatic states to describe energy and electron transfer processes. Bottlenecks in this method are the large number of two-electron integrals that have to be handled for the calculation of an electronic coupling matrix element and the enormous number of matrix elements over determinant pairs that have to be evaluated for the calculation of one matrix element between the MEBFs. We show here how we created a reduced common molecular orbital basis that is utilized to significantly reduce the number of two-electron integrals that need to be handled. The results obtained with this basis do not show any loss of accuracy in relevant quantities like electronic couplings and vertical excitation energies. We also show a significant reduction in computation time without loss in accuracy when matrix elements over determinant pairs with small weights are neglected in the NOCI. These improvements in the methodology render NOCI-Fragments to be also applicable to treat clusters of larger molecular systems with larger atomic basis sets and larger active spaces, as the computation time becomes dependent on the number of occupied orbitals and less dependent on the size of the active space.
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Affiliation(s)
- R K Kathir
- Theoretical Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Coen de Graaf
- Department of Physical and Inorganic Chemistry, Universitat Rovira i Virgili, C. Marcel·lı́ Domingo 1, 43007 Tarragona, Spain.,Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.,ICREA, Passeig Lluı́s Companys 23, 08010 Barcelona, Spain
| | - Ria Broer
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Remco W A Havenith
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Ghent Quantum Chemistry Group, Department of Inorganic and Physical Chemistry, Ghent University, 9000 Gent, Belgium
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6
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Spiller N, Chilkuri VG, DeBeer S, Neese F. Sulfur vs. Selenium as Bridging Ligand in Di‐Iron Complexes: A Theoretical Analysis. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000033] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nico Spiller
- Department of Molecular Theory and Spectroscopy Max‐Planck‐Institut für Kohlenforschung Kaiser‐Wilhelm‐Platz 1 45470 Mülheim an der Ruhr Germany
| | - Vijay Gopal Chilkuri
- Department of Molecular Theory and Spectroscopy Max‐Planck‐Institut für Kohlenforschung Kaiser‐Wilhelm‐Platz 1 45470 Mülheim an der Ruhr Germany
| | - Serena DeBeer
- Department of Inorganic Spectroscopy Max Planck Institute for Chemical Energy Conversion Stiftstr. 34‐36 45470 Mülheim an der Ruhr Germany
| | - Frank Neese
- Department of Molecular Theory and Spectroscopy Max‐Planck‐Institut für Kohlenforschung Kaiser‐Wilhelm‐Platz 1 45470 Mülheim an der Ruhr Germany
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Straatsma TP, Broer R, Faraji S, Havenith RWA, Suarez LEA, Kathir RK, Wibowo M, de Graaf C. GronOR: Massively parallel and GPU-accelerated non-orthogonal configuration interaction for large molecular systems. J Chem Phys 2020; 152:064111. [PMID: 32061226 DOI: 10.1063/1.5141358] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
GronOR is a program package for non-orthogonal configuration interaction calculations for an electronic wave function built in terms of anti-symmetrized products of multi-configuration molecular fragment wave functions. The two-electron integrals that have to be processed may be expressed in terms of atomic orbitals or in terms of an orbital basis determined from the molecular orbitals of the fragments. The code has been specifically designed for execution on distributed memory massively parallel and Graphics Processing Unit (GPU)-accelerated computer architectures, using an MPI+OpenACC/OpenMP programming approach. The task-based execution model used in the implementation allows for linear scaling with the number of nodes on the largest pre-exascale architectures available, provides hardware fault resiliency, and enables effective execution on systems with distinct central processing unit-only and GPU-accelerated partitions. The code interfaces with existing multi-configuration electronic structure codes that provide optimized molecular fragment orbitals, configuration interaction coefficients, and the required integrals. Algorithm and implementation details, parallel and accelerated performance benchmarks, and an analysis of the sensitivity of the accuracy of results and computational performance to thresholds used in the calculations are presented.
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Affiliation(s)
- T P Straatsma
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6373, USA
| | - R Broer
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - S Faraji
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - R W A Havenith
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - L E Aguilar Suarez
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - R K Kathir
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - M Wibowo
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
| | - C de Graaf
- Theoretical Chemistry Group, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands
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Bibi N, de Arruda EGR, Domingo A, Oliveira AA, Galuppo C, Phung QM, Orra NM, Béron F, Paesano A, Pierloot K, Formiga ALB. Switching the Spin-Crossover Phenomenon by Ligand Design on Imidazole–Diazineiron(II) Complexes. Inorg Chem 2018; 57:14603-14616. [DOI: 10.1021/acs.inorgchem.8b02278] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Naheed Bibi
- Institute of Chemistry University of Campinas—UNICAMP, P.O. Box 6154, Campinas, São Paulo 13083-970, Brazil
| | | | - Alex Domingo
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | | | - Carolina Galuppo
- Institute of Chemistry University of Campinas—UNICAMP, P.O. Box 6154, Campinas, São Paulo 13083-970, Brazil
| | - Quan Manh Phung
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Naíma Mohammed Orra
- Institute of Chemistry University of Campinas—UNICAMP, P.O. Box 6154, Campinas, São Paulo 13083-970, Brazil
| | - Fanny Béron
- Institute of Physics Gleb Wataghin, University of Campinas—UNICAMP, Rua Sérgio Buarque de Holanda 777, Campinas, São Paulo 13083-859, Brazil
| | | | - Kristine Pierloot
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - André Luiz Barboza Formiga
- Institute of Chemistry University of Campinas—UNICAMP, P.O. Box 6154, Campinas, São Paulo 13083-970, Brazil
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9
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Coskuner-Weber O. Revisiting Cu(II) Bound Amyloid-β40 and Amyloid-β42 Peptides: Varying Coordination Chemistries. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2018. [DOI: 10.18596/jotcsa.424144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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10
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Pradines B, Lacombe L, Guihéry N, Suaud N. Study of the Electronic Structure of NiGa
2
S
4
and Extraction of the Spin Hamiltonian Parameters from Ab Initio Calculations. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Barthélémy Pradines
- Laboratoire de Chimie et Physique Quantiques, UMR5626 Université de Toulouse 3, Paul Sabatier 118 route de Narbonne 31062 Toulouse France
| | - Lionel Lacombe
- Laboratoire de Chimie et Physique Quantiques, UMR5626 Université de Toulouse 3, Paul Sabatier 118 route de Narbonne 31062 Toulouse France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques, UMR5626 Université de Toulouse 3, Paul Sabatier 118 route de Narbonne 31062 Toulouse France
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques, UMR5626 Université de Toulouse 3, Paul Sabatier 118 route de Narbonne 31062 Toulouse France
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11
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Maxim C, Saureu S, de Graaf C, Ferlay S, Hosseini MW, Robert V, Train C. Amidinium‐Containing 2D [MnCr] Dimetallic Oxalate‐Based Networks – The Influence on Structure and Magnetism Explored by Combining Experience and Theory. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Catalin Maxim
- Molecular Tectonic Laboratory UMR UDS‐CNRS 7140 Université de Strasbourg Institut Le Bel 4, rue Blaise Pascal 67000 Strasbourg France
- Laboratoire National des Champs Magnétiques Intenses UPR CNRS 3228 25 rue des Martyrs, B.P. 166 38042 Grenoble cedex 9 France
- University of Bucharest Faculty of Chemistry Inorganic Chemistry Laboratory Str. Dumbrava Rosie nr. 23 020464 Bucharest Romania
| | - Sergi Saureu
- Laboratoire de Chimie Quantique UMR 7177 1 rue Blaise Pascal 67000 Strasbourg France
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili Marcel·lí Domingo s/n 43007 Tarragona Spain
| | - Coen de Graaf
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili Marcel·lí Domingo s/n 43007 Tarragona Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA) Passeig Lluís Companys 23 08010 Barcelona Spain
| | - Sylvie Ferlay
- Molecular Tectonic Laboratory UMR UDS‐CNRS 7140 Université de Strasbourg Institut Le Bel 4, rue Blaise Pascal 67000 Strasbourg France
- Institut Universitaire de France (IUF) France
| | - Mir Wais Hosseini
- Molecular Tectonic Laboratory UMR UDS‐CNRS 7140 Université de Strasbourg Institut Le Bel 4, rue Blaise Pascal 67000 Strasbourg France
- Institut Universitaire de France (IUF) France
| | - Vincent Robert
- Laboratoire de Chimie Quantique UMR 7177 1 rue Blaise Pascal 67000 Strasbourg France
| | - Cyrille Train
- Laboratoire National des Champs Magnétiques Intenses UPR CNRS 3228 25 rue des Martyrs, B.P. 166 38042 Grenoble cedex 9 France
- Institut Universitaire de France (IUF) France
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12
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Pastore M, De Angelis F, Angeli C. Optical absorption spectrum of the N3 solar cell sensitizer by second-order multireference perturbation theory. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1868-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Giner E, Angeli C. Metal-ligand delocalization and spin density in the CuCl2 and [CuCl4]2− molecules: Some insights from wave function theory. J Chem Phys 2015; 143:124305. [DOI: 10.1063/1.4931639] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Emmanuel Giner
- Dipartimento di Scienze Chimiche e Famaceutiche, Universita di Ferrara, Via Fossato di Mortara 17, I-44121 Ferrara, Italy
| | - Celestino Angeli
- Dipartimento di Scienze Chimiche e Famaceutiche, Universita di Ferrara, Via Fossato di Mortara 17, I-44121 Ferrara, Italy
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