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Popov I, Raenko D, Tchougréeff A, Besley E. Electronic Structure and d-d Spectrum of Metal-Organic Frameworks with Transition-Metal Ions. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:21749-21757. [PMID: 37969926 PMCID: PMC10641854 DOI: 10.1021/acs.jpcc.3c05025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/02/2023] [Accepted: 10/11/2023] [Indexed: 11/17/2023]
Abstract
The electronic structure of metal-organic frameworks (MOFs) containing transition metal (TM) ions represents a significant and largely unresolved computational challenge due to limited solutions to the quantitative description of low-energy excitations in open d-shells. These excitations underpin the magnetic and sensing properties of TM MOFs, including the observed remarkable spin-crossover phenomenon. We introduce the effective Hamiltonian of crystal field approach to study the d-d spectrum of MOFs containing TM ions; this is a hybrid QM/QM method based on the separation of crystal structure into d- and s,p-subsystems treated at different levels of theory. We test the method on model frameworks, carbodiimides, and hydrocyanamides and a series of M-MOF-74 (M = Fe, Co, Ni) and compare the computational predictions to experimental data on magnetic properties and Mössbauer spectra.
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Affiliation(s)
- Ilya Popov
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Dmitrii Raenko
- A.N.
Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow 119071, Russia
| | - Andrei Tchougréeff
- A.N.
Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow 119071, Russia
| | - Elena Besley
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
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2
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Takahashi S, Iuchi S, Hiraoka S, Sato H. Theoretical and computational methodologies for understanding coordination self-assembly complexes. Phys Chem Chem Phys 2023; 25:14659-14671. [PMID: 37051715 DOI: 10.1039/d3cp00082f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
This perspective highlights three theoretical and computational methods to capture the coordination self-assembly processes at the molecular level: quantum chemical modeling, molecular dynamics, and reaction network analysis. These methods cover the different scales from the metal-ligand bond to a more global aspect, and approaches that are best suited to understand the coordination self-assembly from different perspectives are introduced. Theoretical and numerical researches based on these methods are not merely ways of interpreting the experimental studies but complementary to them.
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Affiliation(s)
- Satoshi Takahashi
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan.
| | - Satoru Iuchi
- Graduate School of Informatics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Shuichi Hiraoka
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan.
| | - Hirofumi Sato
- Department of Molecular Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
- Fukui Institute for Fundamental Chemistry, Kyoto University, Sakyo-ku, Kyoto 606-8103, Japan
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3
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Popov I, Plekhanov E, Tchougréeff A, Besley E. Effective hamiltonian of crystal field method for periodic systems containing transition metals. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2106905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Ilya Popov
- School of Chemistry, University of Nottingham, University Park, Nottingham, UK
| | - Evgeny Plekhanov
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow, Russia
| | - Andrei Tchougréeff
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow, Russia
| | - Elena Besley
- School of Chemistry, University of Nottingham, University Park, Nottingham, UK
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4
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Study on pretreatment method for measurement of Fe-55 and Ni-63 in leaching solution of hardened cement. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08286-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Matsumura Y, Iuchi S, Sato H. A model electronic Hamiltonian for the self-assembly of an octahedron-shaped coordination capsule. Phys Chem Chem Phys 2018; 20:1164-1172. [PMID: 29242869 DOI: 10.1039/c7cp06094g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A model electronic Hamiltonian to describe ligand exchange reactions of palladium(ii) complexes with pyridine (Py) and tridentate (L) ligands was developed. It was shown that the model Hamiltonian can adequately reproduce the structures and potential energies of the reactant/product, intermediate, and transition state of the ligand exchange reaction of [PdPy4]2+ with free Py. The model Hamiltonian was extended to describe reactions of multi-metal complexes and was adequately applied to describe various clusters, [PdaLbPyc]2a+, in the self-assembly of an octahedron-shaped coordination capsule, [Pd6L8]12+. The heterogeneity in the energetics of intermediate species [PdaLbPyc]2a+ was strongly suggested by the calculations, and the underlying microscopic interactions were clarified with the geometrical motif. The present framework provides a way to examine the reaction mechanisms of complex metal ligand self-assembly, which can be complementary microscopic information to the recently investigated novel experimental results for the real time evolutions.
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Affiliation(s)
- Yoshihiro Matsumura
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
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6
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Tchougréeff AL, Soudackov AV. Effective Hamiltonian crystal fields: Present status and applicability to magnetic interactions in polynuclear transition metal complexes. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2014. [DOI: 10.1134/s0036024414110053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Andreev IV, Tchougréeff AL, Kögerler P, Rai RC. Magneto-optical Response of 3 d-Decorated Polyoxomolybdates with ε-Keggin Structure. Inorg Chem 2014; 53:2892-8. [DOI: 10.1021/ic402645g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- I. V. Andreev
- Department
of Chemistry, Moscow State University, 119991 Moscow, Russia
| | - A. L. Tchougréeff
- Department
of Chemistry, Moscow State University, 119991 Moscow, Russia
- Institut
für Anorganische Chemie, RWTH−Aachen University, Landoltweg,
1, Aachen, D-52074, Germany
- Poncelet Laboratory, Moscow Center for
Continuous Mathematical Education, Moscow Independent University, 119002 Moscow, Russia
| | - P. Kögerler
- Institut
für Anorganische Chemie, RWTH−Aachen University, Landoltweg,
1, Aachen, D-52074, Germany
| | - R. C. Rai
- Physics
Department, Buffalo State College, 1300 Elmwood Avenue, Buffalo, New York 14222, United States
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8
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Herlitschke M, Tchougréeff AL, Soudackov AV, Klobes B, Stork L, Dronskowski R, Hermann RP. Magnetism and lattice dynamics of FeNCN compared to FeO. NEW J CHEM 2014. [DOI: 10.1039/c4nj00097h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Mössbauer spectra of FeNCN at 6 and 296 K reveal that, in contrast to the usual behaviour, the hyperfine magnetic field is reduced upon cooling.
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Affiliation(s)
- M. Herlitschke
- Jülich Centre for Neutron Science JCNS and Peter Grünberg Institute PGI
- JARA-FIT
- Forschungszentrum Jülich GmbH
- D-52425 Jülich, Germany
- Faculté des Sciences
| | - A. L. Tchougréeff
- Chair of Solid-State and Quantum Chemistry
- RWTH Aachen University
- D-52056 Aachen, Germany
- Independent University of Moscow
- Moscow Center for Continuous Mathematical Education
| | - A. V. Soudackov
- Department of Chemistry
- University of Illinois at Urbana-Champaign
- Urbana, USA
| | - B. Klobes
- Jülich Centre for Neutron Science JCNS and Peter Grünberg Institute PGI
- JARA-FIT
- Forschungszentrum Jülich GmbH
- D-52425 Jülich, Germany
| | - L. Stork
- Chair of Solid-State and Quantum Chemistry
- RWTH Aachen University
- D-52056 Aachen, Germany
| | - R. Dronskowski
- Chair of Solid-State and Quantum Chemistry
- RWTH Aachen University
- D-52056 Aachen, Germany
| | - R. P. Hermann
- Jülich Centre for Neutron Science JCNS and Peter Grünberg Institute PGI
- JARA-FIT
- Forschungszentrum Jülich GmbH
- D-52425 Jülich, Germany
- Faculté des Sciences
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9
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Peng B, Van Kuiken BE, Ding F, Li X. A Guided Self-Consistent-Field Method for Excited-State Wave Function Optimization: Applications to Ligand-Field Transitions in Transition-Metal Complexes. J Chem Theory Comput 2013; 9:3933-8. [DOI: 10.1021/ct400547n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bo Peng
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Benjamin E. Van Kuiken
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Feizhi Ding
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Xiaosong Li
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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10
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Tchougréeff AL, Dronskowski R. Effective Hamiltonian Crystal Field As Applied to Magnetic Exchange Parameters in μ-Oxo-Bridged Cr(III) Dimers. J Phys Chem A 2013; 117:7980-8. [DOI: 10.1021/jp404040c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrei L. Tchougréeff
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany
- Moscow Center for Continuous Mathematical Education, 119002, Moscow, Russia
| | - Richard Dronskowski
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany
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11
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Iuchi S. A model electronic Hamiltonian to study low-lying electronic states of [Fe(bpy)3]2+ in aqueous solution. J Chem Phys 2012; 136:064519. [DOI: 10.1063/1.3684239] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Tchougréeff AL, Dronskowski R. d-d Spectra of transition-metal carbodiimides and hydrocyanamides as derived from many-particle effective Hamiltonian calculations. J Phys Chem A 2011; 115:4547-52. [PMID: 21473626 DOI: 10.1021/jp201070w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We apply the local many-particle method of the Effective Hamiltonian of Crystal Field (EHCF) to analyze the magnetic ground state and the low-energy excitation spectra of the transition-metal carbodiimides MNCN with M = Fe-Ni. Experimentally, these materials represent a uniform group of (high-spin) antiferromagnetic, optically transparent, colored insulators with absorption lines in the visible spectrum. These findings are fully supported by the EHCF numerical modeling. In all three cases, we arrive at high-spin ground states in agreement with the results of previous magnetic measurements as well as the presence of the d-d intrashell transitions for the visible absorption spectra. Remarkably enough, the EHCF approach resolves the controversial case of FeNCN which was earlier predicted to be metallic by density-functional theory even when including explicit electronic correlation (GGA+U). We also address the ground state and the low-energy excitation spectra of the transition-metal hydrocyanamides of the general formula M(NCNH)(2) with M = Fe-Ni, another uniform group of optically transparent colored insulators. EHCF also arrives at high-spin ground states and visible d-d intrashell transitions.
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Speldrich M, Schilder H, Lueken H, Kögerler P. A Computational Framework for Magnetic Polyoxometalates and Molecular Spin Structures: CONDON 2.0. Isr J Chem 2011. [DOI: 10.1002/ijch.201100013] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Liu X, Speldrich M, Kögerler P, Dronskowski R, Tchougréeff AL. Synthesis, Characterization, and Quantum-Chemical Studies of Ni(CN) 2MX (M = Rb, Cs; X = Cl, Br). Inorg Chem 2010; 49:7414-23. [DOI: 10.1021/ic100599z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaohui Liu
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Manfred Speldrich
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Paul Kögerler
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Richard Dronskowski
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Andrei L. Tchougréeff
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany, and Poncelet Laboratory, Independent University of Moscow, Moscow Center for Continuous Mathematical Education, Bolshoi Vlasevsky Per. 11, 119002 Moscow, Russia
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15
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Rudenko M, Tchougreeff AL. CARTESIUS: a group function based toolkit for hybrid molecular modelling. J Cheminform 2010. [PMCID: PMC2867145 DOI: 10.1186/1758-2946-2-s1-p13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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16
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Liu X, Dronskowski R, Glaum R, Tchougréeff AL. Experimental and Quantum-Chemical Investigations of the UV/Vis Absorption Spectrum of Manganese Carbodiimide, MnNCN. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.200900319] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Sinitskiy AV, Tchougréeff AL, Tokmachev AM, Dronskowski R. Modeling molecular crystals formed by spin-active metal complexes by atom-atom potentials. Phys Chem Chem Phys 2009; 11:10983-93. [PMID: 19924334 DOI: 10.1039/b908321a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We apply the atom-atom potentials to molecular crystals of iron(II) complexes with bulky organic ligands. The crystals under study are formed by low-spin or high-spin molecules of Fe(phen)(2)(NCS)(2) (phen = 1,10-phenanthroline), Fe(btz)(2)(NCS)(2) (btz = 5,5',6,6'-tetrahydro-4H,4'H-2,2'-bi-1,3-thiazine), and Fe(bpz)(2)(bipy) (bpz = dihydrobis(1-pyrazolil)borate, and bipy = 2,2'-bipyridine). All molecular geometries are taken from the X-ray experimental data and assumed to be frozen. The unit cell dimensions and angles, positions of the centers of masses of molecules, and the orientations of molecules corresponding to the minimum energy at 1 atm and 1 GPa are calculated. The optimized crystal structures are in a good agreement with the experimental data. Sources of the residual discrepancies between the calculated and experimental structures are discussed. The intermolecular contributions to the enthalpy of the spin transitions are found to be comparable with its total experimental values. It demonstrates that the method of atom-atom potentials is very useful for modeling molecular crystals undergoing the spin transitions.
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Affiliation(s)
- Anton V Sinitskiy
- Poncelet Laboratory, Independent University of Moscow, Bolshoy Vlasyevskiy Pereulok 11, 119002, Moscow, Russia.
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18
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Tchougréeff AL, Tokmachev AM, Dronskowski R. Multipole Model for the Electron Group Functions Method. J Phys Chem A 2009; 113:11406-15. [DOI: 10.1021/jp905744z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. L. Tchougréeff
- Poncelet Laboratory, Independent University of Moscow, Moscow Center for Continuous Mathematical Education, Bolshoy Vlasyevskiy Pereulok 11, 119002 Moscow, Russia
| | - A. M. Tokmachev
- JARA, Institut für Anorganische Chemie, RWTH Aachen, Landoltweg 1, 52056 Aachen, Germany
| | - R. Dronskowski
- JARA, Institut für Anorganische Chemie, RWTH Aachen, Landoltweg 1, 52056 Aachen, Germany
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19
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Chugreev AL. New generation of semiempirical methods of molecular modeling based on the theory of group functions. J STRUCT CHEM+ 2007. [DOI: 10.1007/s10947-007-0148-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Zabalov MV, Karlov SS, Zaitseva GS, Lemenovskii DA. The molecular and electronic structure features of silatranes, germatranes, and their carbon analogs. Russ Chem Bull 2006. [DOI: 10.1007/s11172-006-0279-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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21
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Tokmachev AM, Tchougréeff AL. Efficient Multipole Model and Linear Scaling of NDDO-Based Methods. J Phys Chem A 2005; 109:7613-20. [PMID: 16834132 DOI: 10.1021/jp051827o] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fast growth of computational costs with that of the system's size is a bottleneck for the applications of traditional methods of quantum chemistry to polyatomic molecular systems. This problem is addressed by the development of linear (or almost linear) scaling methods. In the semiempirical domain, it is typically achieved by a series of approximations to the self-consistent field (SCF) solution. By contrast, we propose a route to linear scalability by modifying the trial wave function itself. Our approach is based on variationally determined strictly local one-electron states and a geminal representation of chemical bonds and lone pairs. A serious obstacle previously faced on this route were the numerous transformations of the two-center repulsion integrals characteristic for the neglect of diatomic differential overlap (NDDO) methods. We pass it by replacing the fictitious charge configurations usual for the NDDO scheme by atomic multipoles interacting through semiempirical potentials. It ensures invariance of these integrals and improves the computational efficiency of the whole method. We discuss possible schemes for evaluating the integrals as well as their numerical values. The method proposed is implemented for the most popular modified neglect of diatomic overlap (MNDO), Austin model 1 (AM1), and PM3 parametrization schemes of the NDDO family. Our calculations involving well-justified cutoff procedures for molecular interactions unequivocally show that the proposed scheme provides almost linear scaling of computational costs with the system's size. The numerical results on molecular properties certify that our method is superior with respect to its SCF-based ancestors.
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Affiliation(s)
- A M Tokmachev
- Karpov Institute of Physical Chemistry, 10 Vorontsovo pole, 105064 Moscow, Russia
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22
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Transition metal complexes with open d-shell in semiempirical context. Application to analysis of Mössbauer data on spin–active iron(II) compounds. Theor Chem Acc 2005. [DOI: 10.1007/s00214-005-0649-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Darkhovskii MB, Tchougréeff AL. Local Effective Crystal Field Combined with Molecular Mechanics. Improved QM/MM Junction and Application to Fe(II) and Co(II) Complexes. J Phys Chem A 2004. [DOI: 10.1021/jp036622z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. B. Darkhovskii
- L.Y. Karpov Institute of Physical Chemistry, Vorontsovo Pole 10, 105064 Moscow, Russia, and Center for Computational Chemistry at the M. V. Keldysh Institute for Applied Mathematics of RAS Miusskaya Pl. 4a, 125047 Moscow, Russia
| | - A. L. Tchougréeff
- L.Y. Karpov Institute of Physical Chemistry, Vorontsovo Pole 10, 105064 Moscow, Russia, and Center for Computational Chemistry at the M. V. Keldysh Institute for Applied Mathematics of RAS Miusskaya Pl. 4a, 125047 Moscow, Russia
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24
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Tokmachev A, Tchougréeff A. Local many-electron states in transition metal oxides and their surface complexes with atomic and molecular oxygen. J SOLID STATE CHEM 2003. [DOI: 10.1016/s0022-4596(03)00411-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Darkhovskii MB, Pletnev IV, Tchougréeff AL. Low- and high-spin iron (II) complexes studied by effective crystal field method combined with molecular mechanics. J Comput Chem 2003; 24:1703-19. [PMID: 12964189 DOI: 10.1002/jcc.10300] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A computational method targeted to Werner-type complexes is developed on the basis of quantum mechanical effective Hamiltonian crystal field (EHCF) methodology (previously proposed for describing electronic structure of transition metal complexes) combined with the Gillespie-Kepert version of molecular mechanics (MM). It is a special version of the hybrid quantum/MM approach. The MM part is responsible for representing the whole molecule, including ligand atoms and metal ion coordination sphere, but leaving out the effects of the d-shell. The quantum mechanical EHCF part is limited to the metal ion d-shell. The method reproduces with reasonable accuracy geometry and spin states of the Fe(II) complexes with monodentate and polydentate aromatic ligands with nitrogen donor atoms. In this setting a single set of MM parameters set is shown to be sufficient for handling all spin states of the complexes under consideration.
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Affiliation(s)
- M B Darkhovskii
- L. Y. Karpov Institute of Physical Chemistry, Vorontsovo pole 10, Moscow 105064, Russia
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27
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Primera JR, Sánchez M, Romero M, Sierraalta A, Ruette F. Analysis of parametric functionals in semiempirical approaches using simulation techniques. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0166-1280(98)00587-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Romero M, Sánchez M, Sierraalta A, Rincón L, Ruette F. Simulation Techniques in Parametric Hamiltonians. ACTA ACUST UNITED AC 1999. [DOI: 10.1021/ci980409w] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mirba Romero
- Departamento de Matemática, LUZ, Maracaibo, Venezuela, Departamento de Química, ULA, Mérida, Venezuela, Departamento de Química, IUT, Apartado 40437, Caracas, Venezuela, and Laboratorio de Química Computacional, Centro de Química, IVIC, Apartado 21827, Caracas, Venezuela
| | - Morella Sánchez
- Departamento de Matemática, LUZ, Maracaibo, Venezuela, Departamento de Química, ULA, Mérida, Venezuela, Departamento de Química, IUT, Apartado 40437, Caracas, Venezuela, and Laboratorio de Química Computacional, Centro de Química, IVIC, Apartado 21827, Caracas, Venezuela
| | - Anibal Sierraalta
- Departamento de Matemática, LUZ, Maracaibo, Venezuela, Departamento de Química, ULA, Mérida, Venezuela, Departamento de Química, IUT, Apartado 40437, Caracas, Venezuela, and Laboratorio de Química Computacional, Centro de Química, IVIC, Apartado 21827, Caracas, Venezuela
| | - Luis Rincón
- Departamento de Matemática, LUZ, Maracaibo, Venezuela, Departamento de Química, ULA, Mérida, Venezuela, Departamento de Química, IUT, Apartado 40437, Caracas, Venezuela, and Laboratorio de Química Computacional, Centro de Química, IVIC, Apartado 21827, Caracas, Venezuela
| | - Fernando Ruette
- Departamento de Matemática, LUZ, Maracaibo, Venezuela, Departamento de Química, ULA, Mérida, Venezuela, Departamento de Química, IUT, Apartado 40437, Caracas, Venezuela, and Laboratorio de Química Computacional, Centro de Química, IVIC, Apartado 21827, Caracas, Venezuela
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29
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Tchougréeff A. d-d spectra of transition metal oxides by effective crystal field method. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s1381-1169(96)00501-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tchougréeff AL, Soudackov AV, Misurkin IA, Bolvin H, Kahn O. High-spin-low-spin transitions in Fe(II) complexes by effective Hamiltonian method. Chem Phys 1995. [DOI: 10.1016/0301-0104(94)00410-c] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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