1
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Heck J, Kucenko A, Hoffmann A, Herres-Pawlis S. Position of substituents directs the electron transfer properties of entatic state complexes: new insights from guanidine-quinoline copper complexes. Dalton Trans 2024; 53:12527-12542. [PMID: 39016043 DOI: 10.1039/d4dt01539h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
In a previous study, we showed that the properties and the ability as an entatic state model of copper guanidine quinoline complexes are significantly influenced by a methyl or methyl ester substituent in the 2-position. To prove the importance of the 2-position of the substituent, two novel guanidine quinoline ligands with a methyl or methyl ester substituent in the 4-position and the corresponding copper complexes were synthesized and characterized in this study. The influence of the substituent position on the copper complexes was investigated with various experimental and theoretical methods. The molecular structures of the copper complexes were examined in the solid state by single-crystal X-ray diffraction (SCXRD) and by density functional theory (DFT) calculations indicating a strong dependency on the substituent position compared to the systems substituted in the 2-position from the previous study. Further, the significantly different influence on the donor properties in dependency on the substituent position was analyzed with natural bond orbital (NBO) calculations. By the determination of the redox potentials, the impact on the electrochemical stabilization was examined. With regard to further previously analyzed guanidine quinoline copper complexes, the electrochemical stabilization was correlated with the charge-transfer energies calculated by NBO analysis and ground state energies, revealing the substituent influence and enabling a comparatively easy and accurate possibility for the theoretical calculation of the relative redox potential. Finally, the electron transfer properties were quantified by determining the electron self-exchange rates via the Marcus theory and by theoretical calculation of the reorganization energies via Nelsen's four-point method. The results gave important insights into the dependency between the ability of the copper complexes as entatic state model and the type and position of the substituent.
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Affiliation(s)
- Joshua Heck
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
| | - Anastasia Kucenko
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
| | - Alexander Hoffmann
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
| | - Sonja Herres-Pawlis
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
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2
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Arras J, Calderón-Díaz A, Lebedkin S, Gozem S, McMillen CD, Bhuvanesh N, Stollenz M. Twisted and Disconnected Chains: Flexible Linear Tetracuprous Arrays and a Decanuclear Cu I Cluster as Blue- and Green/Yellow-Light Emitters. Inorg Chem 2024; 63:12943-12957. [PMID: 38935842 PMCID: PMC11256752 DOI: 10.1021/acs.inorgchem.4c01646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/31/2024] [Accepted: 06/05/2024] [Indexed: 06/29/2024]
Abstract
Defined arrays of transition metal ions embedded in tailored polydentate ligand scaffolds allow for a systematic design of their physical properties. Such molecular strings of closed-shell transition metal centers are particularly interesting for Group 11 metal ions in the oxidation state +1 if they undergo metallophilic d10···d10 contact interactions since these clusters are oftentimes efficient photoluminescence (PL) emitters. Copper is particularly attractive as a sustainable earth-abundant coinage metal source and because of the ability of several CuI complexes to serve as powerful thermally activated delayed fluorescence (TADF) emitters in molecular/organic light-emitting devices (OLEDs). Our combined synthetic, crystallographic, photophysical, and computational study describes a straight tetracuprous array possessing a centrally disconnected CuI2···CuI2 chain and a continuous helically bent CuI4 complex. This molecular helix undergoes a facile rearrangement in diethyl ether solution, yielding an unprecedented nanosized CuI10 cluster (2.9 × 2.0 nm) upon crystallization. All three clusters show either bright blue phosphorescence, TADF, or green/yellow multiband phosphorescence with quantum yields between 6.5 and 67%, which is persistent under hydrostatic pressure up to 30 kbar. Temperature-dependent PL investigations in combination with time-dependent density-functional theory (TD-DFT) calculations and void space analyses of the crystal packings complement a comprehensive correlation between the molecular structures and photoluminescence properties.
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Affiliation(s)
- Janet Arras
- Department
of Chemistry and Biochemistry, Kennesaw
State University, 370 Paulding Avenue NW, MD # 1203, Kennesaw, Georgia 30144, United States
| | - Alvaro Calderón-Díaz
- Department
of Chemistry and Biochemistry, Kennesaw
State University, 370 Paulding Avenue NW, MD # 1203, Kennesaw, Georgia 30144, United States
| | - Sergei Lebedkin
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Herrmann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Samer Gozem
- Department
of Chemistry, Georgia State University, 145 Piedmont Ave SE, Atlanta, Georgia 30303, United States
| | - Colin D. McMillen
- Department
of Chemistry, Clemson University, 379 Hunter Laboratories, Clemson, South Carolina 29634-0973, United States
| | - Nattamai Bhuvanesh
- Department
of Chemistry, Texas A&M University, 580 Ross Street, P.O. Box 30012, College Station, Texas 77842-3012, United
States
| | - Michael Stollenz
- Department
of Chemistry and Biochemistry, Kennesaw
State University, 370 Paulding Avenue NW, MD # 1203, Kennesaw, Georgia 30144, United States
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3
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Raßpe-Lange L, Hoffmann A, Gertig C, Heck J, Leonhard K, Herres-Pawlis S. Geometrical benchmarking and analysis of redox potentials of copper(I/II) guanidine-quinoline complexes: Comparison of semi-empirical tight-binding and DFT methods and the challenge of describing the entatic state (part III). J Comput Chem 2023; 44:319-328. [PMID: 35640228 DOI: 10.1002/jcc.26927] [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: 02/16/2022] [Revised: 04/14/2022] [Accepted: 04/20/2022] [Indexed: 01/03/2023]
Abstract
Copper guanidine-quinoline complexes are an important class of bioinorganic complexes that find utilization in electron and atom transfer processes. By substitution of functional groups on the quinoline moiety the electron transfer abilities of these complexes can be tuned. In order to explore the full substitution space by simulations, the accurate theoretical description of the effect of functional groups is essential. In this study, we compare three different methods for the theoretical description of the structures. We use the semi-empirical tight-binding method GFN2-xTB, the density functional TPSSh and the double-hybrid functional B2PLYP. We evaluate the methods on five different complex pairs (Cu(I) and Cu(II) complexes), and compare how well calculated energies can predict the redox potentials. We find even though B2PLYP and TPSSh yield better accordance with the experimental structures. GFN2-xTB performs surprisingly well in the geometry optimization at a fraction of the computational cost. TPSSh offers a good compromise between computational cost and accuracy of the redox potential for real-life complexes.
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Affiliation(s)
- Lukas Raßpe-Lange
- Institute of Technical Thermodynamics, RWTH Aachen University, Aachen, Germany
| | - Alexander Hoffmann
- Institute of Inorganic Chemistry, RWTH Aachen University, Aachen, Germany
| | - Christoph Gertig
- Institute of Technical Thermodynamics, RWTH Aachen University, Aachen, Germany.,Pharmaplan AG, Basel, Switzerland
| | - Joshua Heck
- Institute of Inorganic Chemistry, RWTH Aachen University, Aachen, Germany
| | - Kai Leonhard
- Institute of Technical Thermodynamics, RWTH Aachen University, Aachen, Germany
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4
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Heck J, Metz F, Buchenau S, Teubner M, Grimm-Lebsanft B, Spaniol TP, Hoffmann A, Rübhausen MA, Herres-Pawlis S. Manipulating electron transfer - the influence of substituents on novel copper guanidine quinolinyl complexes. Chem Sci 2022; 13:8274-8288. [PMID: 35919707 PMCID: PMC9297705 DOI: 10.1039/d2sc02910c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 06/11/2022] [Indexed: 11/21/2022] Open
Abstract
Copper guanidine quinolinyl complexes act as good entatic state models due to their distorted structures leading to a high similarity between Cu(i) and Cu(ii) complexes. For a better understanding of the entatic state principle regarding electron transfer a series of guanidine quinolinyl ligands with different substituents in the 2- and 4-position were synthesized to examine the influence on the electron transfer properties of the corresponding copper complexes. Substituents with different steric or electronic influences were chosen. The effects on the properties of the copper complexes were studied applying different experimental and theoretical methods. The molecular structures of the bis(chelate) copper complexes were examined in the solid state by single-crystal X-ray diffraction and in solution by X-ray absorption spectroscopy and density functional theory (DFT) calculations revealing a significant impact of the substituents on the complex structures. For a better insight natural bond orbital (NBO) calculations of the ligands and copper complexes were performed. The electron transfer was analysed by the determination of the electron self-exchange rates following Marcus theory. The obtained results were correlated with the results of the structural analysis of the complexes and of the NBO calculations. Nelsen's four-point method calculations give a deeper understanding of the thermodynamic properties of the electron transfer. These studies reveal a significant impact of the substituents on the properties of the copper complexes.
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Affiliation(s)
- Joshua Heck
- Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1a 52074 Aachen Germany
| | - Fabian Metz
- Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1a 52074 Aachen Germany
| | - Sören Buchenau
- Institute of Nanostructure and Solid State Physics, University of Hamburg Luruper Chaussee 149 22761 Hamburg Germany
| | - Melissa Teubner
- Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1a 52074 Aachen Germany
- Institute of Nanostructure and Solid State Physics, University of Hamburg Luruper Chaussee 149 22761 Hamburg Germany
| | - Benjamin Grimm-Lebsanft
- Institute of Nanostructure and Solid State Physics, University of Hamburg Luruper Chaussee 149 22761 Hamburg Germany
| | - Thomas P Spaniol
- Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1a 52074 Aachen Germany
| | - Alexander Hoffmann
- Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1a 52074 Aachen Germany
| | - Michael A Rübhausen
- Institute of Nanostructure and Solid State Physics, University of Hamburg Luruper Chaussee 149 22761 Hamburg Germany
| | - Sonja Herres-Pawlis
- Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1a 52074 Aachen Germany
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5
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Almansour AI, Arumugam N, Prasad S, Kumar RS, Alsalhi MS, Alkaltham MF, Al-Tamimi HBA. Investigation of the Optical Properties of a Novel Class of Quinoline Derivatives and Their Random Laser Properties Using ZnO Nanoparticles. Molecules 2021; 27:145. [PMID: 35011374 PMCID: PMC8746827 DOI: 10.3390/molecules27010145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 11/26/2022] Open
Abstract
Quinoline Schiff bases display potential applications in optoelectronics and laser fields because of their unique optical properties that arise from extensive delocalization of the electron cloud, and a high order of non-linearity. In this context, a new class of conjugated quinoline-derivative viz. N-(quinolin-3-ylmethylene)anilines were synthesized from 2-hydroxyquinoline-3-carbaldehyde in two good yielding steps. The ability of these imines to accept an electron from a donor is denoted by their electron acceptor number and sites, which is calculated using density functional theory (DFT). The optical properties such as FT-IR, Raman, UV-VIS, and EDS spectra were calculated using TD-DFT, which also provided the energy gap, HOMO-LUMO structure. The optical properties of the synthesized imino quinolines were experimentally studied using photoluminescence and absorption spectroscopy. The properties such as Stokes shift and quantum yield were calculated using experimental data. Furthermore, the compound bearing a methyl group on the aryl ring and ZnO nanoparticles (hydrothermally synthesized) were dissolved in toluene, and optically excited with a 355 nm nanosecond laser, which produced a random laser.
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Affiliation(s)
- Abdulrahman I. Almansour
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.I.A.); (R.S.K.); (M.F.A.)
| | - Natarajan Arumugam
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.I.A.); (R.S.K.); (M.F.A.)
| | - Saradh Prasad
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (S.P.); (M.S.A.); (H.b.A.A.-T.)
- Research Chair for Laser Diagnosis of Cancers, Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Raju Suresh Kumar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.I.A.); (R.S.K.); (M.F.A.)
| | - Mohamad S. Alsalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (S.P.); (M.S.A.); (H.b.A.A.-T.)
- Research Chair for Laser Diagnosis of Cancers, Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Manal Fahad Alkaltham
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.I.A.); (R.S.K.); (M.F.A.)
| | - Haya bint Abdulaziz Al-Tamimi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (S.P.); (M.S.A.); (H.b.A.A.-T.)
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6
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Thomas F, Oster M, Schön F, Göbgen KC, Amarouch B, Steden D, Hoffmann A, Herres-Pawlis S. A new generation of terminal copper nitrenes and their application in aromatic C-H amination reactions. Dalton Trans 2021; 50:6444-6462. [PMID: 33908532 DOI: 10.1039/d1dt00832c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper nitrene complexes are highly reactive species and are known as intermediates in the copper catalyzed C-H amination. In this study, three novel copper tosyl nitrene complexes were synthesized at low temperatures, stabilized with heteroscorpionate ligands of the bis(pyrazolyl)methane family. The copper nitrenes were obtained by the reaction of a copper(i) acetonitrile complex with SPhINTs in dichloromethane. We show that the ligand design has a major influence on the catalytic activity and the thermal stability of the copper nitrene complex. Not only the choice of the third N donor, but also the substituent in the 5-position of the pyrazolyl moiety, have an impact on the stability. Furthermore, the novel copper nitrene complexes were used for catalytic aziridination of styrenes and C-H amination reactions of aromatic and aliphatic substrates under mild reaction conditions. Even challenging substrates like benzene and cyclohexane were aminated with good yields. The copper nitrene complexes were characterized using UV/Vis spectroscopy, low temperature Evans NMR spectroscopy, density functional theory, domain-based local pair natural orbital coupled cluster calculations (DLPNO-CCSD(T)) and cryo-UHR mass spectrometry.
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Affiliation(s)
- Fabian Thomas
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany.
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7
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Osadchuk I, Borovkov V, Aav R, Clot E. Benchmarking computational methods and influence of guest conformation on chirogenesis in zinc porphyrin complexes. Phys Chem Chem Phys 2020; 22:11025-11037. [DOI: 10.1039/d0cp00965b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different computational methods and influence of the guest conformation and solvent effect to analyze chirogenesis in zinc porphyrins by several chiral compounds have been investigated.
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Affiliation(s)
- Irina Osadchuk
- Department of Chemistry and Biotechnology
- Tallinn University of Technology
- Tallinn 12618
- Estonia
- ICGM, University of Montpellier
| | - Victor Borovkov
- Department of Chemistry and Biotechnology
- Tallinn University of Technology
- Tallinn 12618
- Estonia
- College of Chemistry and Materials Science
| | - Riina Aav
- Department of Chemistry and Biotechnology
- Tallinn University of Technology
- Tallinn 12618
- Estonia
| | - Eric Clot
- ICGM, University of Montpellier
- CNRS
- ENSCM
- Montpellier
- France
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8
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Stanek J, Konrad M, Mannsperger J, Hoffmann A, Herres-Pawlis S. Influence of Functionalized Substituents on the Electron-Transfer Abilities of Copper Guanidinoquinoline Complexes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Julia Stanek
- Institute for Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Marc Konrad
- Institute for Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Johannes Mannsperger
- Institute for Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Alexander Hoffmann
- Institute for Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sonja Herres-Pawlis
- Institute for Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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9
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Blase X, Duchemin I, Jacquemin D. The Bethe–Salpeter equation in chemistry: relations with TD-DFT, applications and challenges. Chem Soc Rev 2018; 47:1022-1043. [DOI: 10.1039/c7cs00049a] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We review the Bethe–Salpeter formalism and analyze its performances for the calculation of the excited state properties of molecular systems.
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Affiliation(s)
- Xavier Blase
- Univ. Grenoble Alpes
- CNRS
- Inst NEEL
- F-38042 Grenoble
- France
| | - Ivan Duchemin
- Univ. Grenoble Alpes
- CEA
- INAC-MEM
- L-Sim
- F-38000 Grenoble
| | - Denis Jacquemin
- CEISAM UMR CNRS 6230
- Université de Nantes
- 44322 Nantes Cedex 3
- France
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10
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Stanek J, Sackers N, Fink F, Paul M, Peters L, Grunzke R, Hoffmann A, Herres-Pawlis S. Copper Guanidinoquinoline Complexes as Entatic State Models of Electron-Transfer Proteins. Chemistry 2017; 23:15738-15745. [DOI: 10.1002/chem.201703261] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Julia Stanek
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Nina Sackers
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Fabian Fink
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Melanie Paul
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Laurens Peters
- Department Chemie; Ludwig-Maximilians Universität München; Butenandtstraße 5-13 81377 München Germany
| | - Richard Grunzke
- Zentrum für Informationsdienste und Hochleistungsrechnen; Technische Universität Dresden; Zellescher Weg 12-14 01062 Dresden Germany
| | - Alexander Hoffmann
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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11
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Witte M, Herres-Pawlis S. Relativistic effects at the Cu 2O 2 core - a density functional theory study. Phys Chem Chem Phys 2017; 19:26880-26889. [PMID: 28952623 DOI: 10.1039/c7cp04686c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents for the first time the impact of relativistic effects on the Cu2O2 peroxide dicopper(ii)-bis(μ-oxo) dicopper (iii) equilibrium bonding motif in existing tyrosinase model complexes [Cu2(btmgp)2(μ-O)2]2+ and [Cu2{HC(tBuPz)2Py}2(O2)]2+ [S. Herres et al., Inorg. Chim. Acta, 2005, 358, 1089; S. Herres-Pawlis et al., Eur. J. Inorg. Chem., 2005, 3815; A. Hoffmann et al., Angew. Chem., Int. Ed., 2013, 52, 5398]. We use density functional theory (TPSSh/cc-pVTZ+D3BJ) with various relativistic approaches (ECPs, DKH, ZORA) to tackle the question of impact and find, as already known for small model complexes in the literature, that the O core is more stabilized with respect to the P core by the relativistic influence [D. G. Liakos and F. Neese, J. Chem. Theory Comput., 2011, 7, 1511]. Whereas DKH and ZORA yield similar results, ECPs underestimate the predicted effect. By calculating the functional of the relativistic overlap change, we can exactly identify the relativistic changes at the molecular orbital level and narrow down the affected MOs. Thus, by performing a detailed bond analysis utilizing the overlap population, we are able to rationalize the effects at the chemical level by finding relativistic bond stabilization in both isomers, which is more dominating in the O core. In conclusion, relativistic effects already play an important role in dicopper cores and should be considered.
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Affiliation(s)
- Matthias Witte
- RWTH Aachen University, Institute of Inorganic Chemistry, Chair of Bioinorganic Chemistry, Landoltweg 1, 52074 Aachen, Germany.
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12
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Oppermann A, Laurini L, Etscheidt F, Hollmann K, Strassl F, Hoffmann A, Schurr D, Dittmeyer R, Rinke G, Herres-Pawlis S. Detection of Copper Bisguanidine NO Adducts by UV-vis Spectroscopy and a SuperFocus Mixer. Chem Eng Technol 2017. [DOI: 10.1002/ceat.201600691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alexander Oppermann
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Larissa Laurini
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Fabian Etscheidt
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Katharina Hollmann
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Florian Strassl
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Alexander Hoffmann
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Daniela Schurr
- Karlsruhe Institute of Technology; Institute for Micro Process Engineering; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Roland Dittmeyer
- Karlsruhe Institute of Technology; Institute for Micro Process Engineering; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Günter Rinke
- Karlsruhe Institute of Technology; Institute for Micro Process Engineering; Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Sonja Herres-Pawlis
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
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13
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Witte M, Rohrmüller M, Gerstmann U, Henkel G, Schmidt WG, Herres-Pawlis S. [Cu 6 (NGuaS) 6 ] 2+ and its oxidized and reduced derivatives: Confining electrons on a torus. J Comput Chem 2017; 38:1752-1761. [PMID: 28394037 DOI: 10.1002/jcc.24798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 02/04/2017] [Accepted: 03/11/2017] [Indexed: 12/14/2022]
Abstract
The hexanuclear thioguanidine mixed-valent copper complex cation [Cu6 (NGuaS)6 ]+2 (NGuaS = o-SC6 H4 NC(NMe2 )2 ) and its oxidized/reduced states are theoretically analyzed by means of density functional theory (DFT) (TPSSh + D3BJ/def2-TZV (p)). A detailed bonding analysis using overlap populations is performed. We find that a delocalized Cu-based ring orbital serves as an acceptor for donated S p electrons. The formed fully delocalized orbitals give rise to a confined electron cloud within the Cu6 S6 cage which becomes larger on reduction. The resulting strong electrostatic repulsion might prevent the fully reduced state. Experimental UV/Vis spectra are explained using time-dependent density functional theory (TD-DFT) and analyzed with a natural transition orbital analysis. The spectra are dominated by MLCTs within the Cu6 S6 core over a wide range but LMCTs are also found. The experimental redshift of the reduced low energy absorption band can be explained by the clustering of the frontier orbitals. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Matthias Witte
- Lehrstuhl für Bioanorganische Chemie, Fachgruppe Chemie, RWTH Aachen University, Landoltweg 1, Aachen, 52074, Germany
| | - Martin Rohrmüller
- Lehrstuhl für Theoretische Physik, Universität Paderborn, Warburger Str. 100, Paderborn, 33098, Germany
| | - Uwe Gerstmann
- Lehrstuhl für Theoretische Physik, Universität Paderborn, Warburger Str. 100, Paderborn, 33098, Germany
| | - Gerald Henkel
- Lehrstuhl für Anorganische Chemie, Universität Paderborn, Warburger Str.100, Paderborn, 33098, Germany
| | - Wolf Gero Schmidt
- Lehrstuhl für Theoretische Physik, Universität Paderborn, Warburger Str. 100, Paderborn, 33098, Germany
| | - Sonja Herres-Pawlis
- Lehrstuhl für Bioanorganische Chemie, Fachgruppe Chemie, RWTH Aachen University, Landoltweg 1, Aachen, 52074, Germany
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14
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Hollmann K, Oppermann A, Witte M, Li S, Amen M, Flörke U, Egold H, Henkel G, Herres-Pawlis S. Copper(I) Complexes with Thiourea Derivatives as Ligands: Revealing Secrets of Their Bonding Scheme. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601547] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Katharina Hollmann
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Alexander Oppermann
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Matthias Witte
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Maike Amen
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Ulrich Flörke
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Hans Egold
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Gerald Henkel
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Sonja Herres-Pawlis
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
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15
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Multi-level meta-workflows: new concept for regularly occurring tasks in quantum chemistry. J Cheminform 2016; 8:58. [PMID: 27818709 PMCID: PMC5073744 DOI: 10.1186/s13321-016-0169-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 10/04/2016] [Indexed: 11/10/2022] Open
Abstract
Background
In Quantum Chemistry, many tasks are reoccurring frequently, e.g. geometry optimizations, benchmarking series etc. Here, workflows can help to reduce the time of manual job definition and output extraction. These workflows are executed on computing infrastructures and may require large computing and data resources. Scientific workflows hide these infrastructures and the resources needed to run them. It requires significant efforts and specific expertise to design, implement and test these workflows. Significance Many of these workflows are complex and monolithic entities that can be used for particular scientific experiments. Hence, their modification is not straightforward and it makes almost impossible to share them. To address these issues we propose developing atomic workflows and embedding them in meta-workflows. Atomic workflows deliver a well-defined research domain specific function. Publishing workflows in repositories enables workflow sharing inside and/or among scientific communities. We formally specify atomic and meta-workflows in order to define data structures to be used in repositories for uploading and sharing them. Additionally, we present a formal description focused at orchestration of atomic workflows into meta-workflows. Conclusions We investigated the operations that represent basic functionalities in Quantum Chemistry, developed the relevant atomic workflows and combined them into meta-workflows. Having these workflows we defined the structure of the Quantum Chemistry workflow library and uploaded these workflows in the SHIWA Workflow Repository.Meta-workflows and embedded workflows in the template representation ![]() Electronic supplementary material The online version of this article (doi:10.1186/s13321-016-0169-8) contains supplementary material, which is available to authorized users.
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16
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Vollmers NJ, Müller P, Hoffmann A, Herres-Pawlis S, Rohrmüller M, Schmidt WG, Gerstmann U, Bauer M. Experimental and Theoretical High-Energy-Resolution X-ray Absorption Spectroscopy: Implications for the Investigation of the Entatic State. Inorg Chem 2016; 55:11694-11706. [DOI: 10.1021/acs.inorgchem.6b01704] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | | | - Alexander Hoffmann
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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17
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Hoffmann A, Wern M, Hoppe T, Witte M, Haase R, Liebhäuser P, Glatthaar J, Herres-Pawlis S, Schindler S. Hand in Hand: Experimental and Theoretical Investigations into the Reactions of Copper(I) Mono- and Bis(guanidine) Complexes with Dioxygen. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600906] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexander Hoffmann
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Miriam Wern
- Institut für Anorganische und Analytische Chemie; Justus-Liebig-Universität Gießen; Heinrich-Buff-Ring 17 35392 Gießen Germany
| | - Tobias Hoppe
- Institut für Anorganische und Analytische Chemie; Justus-Liebig-Universität Gießen; Heinrich-Buff-Ring 17 35392 Gießen Germany
| | - Matthias Witte
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Roxana Haase
- Department Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Patricia Liebhäuser
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Jörg Glatthaar
- Institut für Organische Chemie; Heinrich-Buff-Ring 17 35392 Gießen Germany
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Siegfried Schindler
- Institut für Anorganische und Analytische Chemie; Justus-Liebig-Universität Gießen; Heinrich-Buff-Ring 17 35392 Gießen Germany
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18
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Hoffmann A, Stanek J, Dicke B, Peters L, Grimm-Lebsanft B, Wetzel A, Jesser A, Bauer M, Gnida M, Meyer-Klaucke W, Rübhausen M, Herres-Pawlis S. Implications of Guanidine Substitution on Copper Complexes as Entatic-State Models. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600655] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alexander Hoffmann
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Julia Stanek
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Benjamin Dicke
- Universität Hamburg; Institut für Nanostruktur- und Festkörperphysik and Center for Free-Electron Laser Science; Notkestrasse 85 22607 Hamburg Germany
| | - Laurens Peters
- Department Chemie; Ludwig-Maximilians Universität München; Butenandtstraße 5-13 81377 München Germany
| | - Benjamin Grimm-Lebsanft
- Universität Hamburg; Institut für Nanostruktur- und Festkörperphysik and Center for Free-Electron Laser Science; Notkestrasse 85 22607 Hamburg Germany
| | - Alina Wetzel
- Universität Hamburg; Institut für Nanostruktur- und Festkörperphysik and Center for Free-Electron Laser Science; Notkestrasse 85 22607 Hamburg Germany
| | - Anton Jesser
- Department Chemie; Ludwig-Maximilians Universität München; Butenandtstraße 5-13 81377 München Germany
| | - Matthias Bauer
- Universität Paderborn; Department Chemie; Warburger Str. 100 33098 Paderborn Germany
| | - Manuel Gnida
- Universität Paderborn; Department Chemie; Warburger Str. 100 33098 Paderborn Germany
| | - Wolfram Meyer-Klaucke
- Universität Paderborn; Department Chemie; Warburger Str. 100 33098 Paderborn Germany
| | - Michael Rübhausen
- Universität Hamburg; Institut für Nanostruktur- und Festkörperphysik and Center for Free-Electron Laser Science; Notkestrasse 85 22607 Hamburg Germany
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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19
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Rösener T, Bienemann O, Sigl K, Schopp N, Schnitter F, Flörke U, Hoffmann A, Döring A, Kuckling D, Herres-Pawlis S. A Comprehensive Study of Copper Guanidine Quinoline Complexes: Predicting the Activity of Catalysts in ATRP with DFT. Chemistry 2016; 22:13550-62. [PMID: 27505859 DOI: 10.1002/chem.201602223] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Indexed: 11/07/2022]
Abstract
Copper complexes of the hybrid guanidine ligands 1,3-dimethyl-N-(quinolin-8-yl)-imidazolidin-2-imine (DMEGqu) and 1,1,3,3-tetramethyl-2-(quinolin-8-yl)-guanidine (TMGqu) have been studied comprehensively with regard to their structural and electrochemical properties and their activity in atom transfer radical polymerization (ATRP). A simple analysis of the molecular structures of the complexes gives no indication about their activity in ATRP; however, with the help of DFT and NBO analysis the influence of particular coordinating donors on the electrochemical properties could be fully elucidated. With an adequate DFT methodology and newly applied theoretical isodesmic reactions it was possible to predict the relative position of the redox potentials of copper complexes containing DMEGqu and TMGqu ligands. In addition, predictions could be made as to whether the complexes of DMEGqu or TMGqu are more active in ATRP. Four new Cu(I) complexes were tested in standard ATRP reactions and kinetically investigated both in bulk and in solution. It could be proven that complexes featuring DMEGqu possess a lower redox potential and are more active in ATRP, although the tetramethylguanidine moiety represents the stronger donor.
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Affiliation(s)
- Thomas Rösener
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Olga Bienemann
- Technische Universität Dortmund, Fakultät CCB, Otto-Hahn-Str. 6, 44277, Dortmund, Germany
| | - Kerstin Sigl
- Department für Chemie und Pharmazie, Ludwig-Maximilians Universität München, Butenandtstraße 5-13, 81377, München, Germany
| | - Nora Schopp
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Fabian Schnitter
- Department für Chemie und Pharmazie, Ludwig-Maximilians Universität München, Butenandtstraße 5-13, 81377, München, Germany
| | - Ulrich Flörke
- Department Chemie, Universität Paderborn, Warburger Str.100, 33098, Paderborn, Germany
| | - Alexander Hoffmann
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Artjom Döring
- Department Chemie, Universität Paderborn, Warburger Str.100, 33098, Paderborn, Germany
| | - Dirk Kuckling
- Department Chemie, Universität Paderborn, Warburger Str.100, 33098, Paderborn, Germany
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany.
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20
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Witte M, Grimm-Lebsanft B, Goos A, Binder S, Rübhausen M, Bernard M, Neuba A, Gorelsky S, Gerstmann U, Henkel G, Gero Schmidt W, Herres-Pawlis S. Optical response of the Cu2 S2 diamond core in Cu2II(NGuaS)2 Cl2. J Comput Chem 2016; 37:2181-92. [PMID: 27362786 DOI: 10.1002/jcc.24439] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 06/10/2016] [Accepted: 06/13/2016] [Indexed: 01/25/2023]
Abstract
Density functional theory (DFT) and time-dependent DFT calculations are presented for the dicopper thiolate complex Cu2 (NGuaS)2 Cl2 [NGuaS=2-(1,1,3,3-tetramethylguanidino) benzenethiolate] with a special focus on the bonding mechanism of the Cu2 S2 Cl2 core and the spectroscopic response. This complex is relevant for the understanding of dicopper redox centers, for example, the CuA center. Its UV/Vis absorption is theoretically studied and found to be similar to other structural CuA models. The spectrum can be roughly divided in the known regions of metal d-d absorptions and metal to ligand charge transfer regions. Nevertheless the chloride ions play an important role as electron donors, with the thiolate groups as electron acceptors. The bonding mechanism is dissected by means of charge decomposition analysis which reveals the large covalency of the Cu2 S2 diamond core mediated between Cu dz2 and S-S π and π* orbitals forming Cu-S σ bonds. Measured resonant Raman spectra are shown for 360- and 720-nm excitation wavelength and interpreted using the calculated vibrational eigenmodes and frequencies. The calculations help to rationalize the varying resonant behavior at different optical excitations. Especially the phenylene rings are only resonant for 720 nm. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Matthias Witte
- Lehrstuhl Für Bioanorganische Chemie, Fachgruppe Chemie, RWTH Aachen University, Landoltweg 1, Aachen, 52074, Germany
| | - Benjamin Grimm-Lebsanft
- Institut für Nanostruktur- und Festkörperphysik and Center for Free Electron Laser Science, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Arne Goos
- Institut für Nanostruktur- und Festkörperphysik and Center for Free Electron Laser Science, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Stephan Binder
- Institut für Nanostruktur- und Festkörperphysik and Center for Free Electron Laser Science, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Michael Rübhausen
- Institut für Nanostruktur- und Festkörperphysik and Center for Free Electron Laser Science, University of Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - Martin Bernard
- Lehrstuhl Für Anorganische Chemie, Universität Paderborn, Warburger Str. 100, Paderborn, 33098, Germany
| | - Adam Neuba
- Lehrstuhl Für Anorganische Chemie, Universität Paderborn, Warburger Str. 100, Paderborn, 33098, Germany
| | - Serge Gorelsky
- Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Uwe Gerstmann
- Lehrstuhl Für Theoretische Physik, Universität Paderborn, Warburger Str. 100, Paderborn, 33098, Germany
| | - Gerald Henkel
- Lehrstuhl Für Anorganische Chemie, Universität Paderborn, Warburger Str. 100, Paderborn, 33098, Germany
| | - Wolf Gero Schmidt
- Lehrstuhl Für Theoretische Physik, Universität Paderborn, Warburger Str. 100, Paderborn, 33098, Germany
| | - Sonja Herres-Pawlis
- Lehrstuhl Für Bioanorganische Chemie, Fachgruppe Chemie, RWTH Aachen University, Landoltweg 1, Aachen, 52074, Germany
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21
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Tran F, Stelzl J, Blaha P. Rungs 1 to 4 of DFT Jacob’s ladder: Extensive test on the lattice constant, bulk modulus, and cohesive energy of solids. J Chem Phys 2016; 144:204120. [DOI: 10.1063/1.4948636] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Fabien Tran
- Institute of Materials Chemistry, Vienna University of Technology, Getreidemarkt 9/165-TC, A-1060 Vienna, Austria
| | - Julia Stelzl
- Institute of Materials Chemistry, Vienna University of Technology, Getreidemarkt 9/165-TC, A-1060 Vienna, Austria
| | - Peter Blaha
- Institute of Materials Chemistry, Vienna University of Technology, Getreidemarkt 9/165-TC, A-1060 Vienna, Austria
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22
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Hoffmann A, Herres-Pawlis S. Donor-driven conformational flexibility in a real-life catalytic dicopper(ii) peroxo complex. Phys Chem Chem Phys 2016; 18:6430-40. [DOI: 10.1039/c5cp05009j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conformers of the real-life tyrosinase model [Cu2O2{HC(3-tBuPz)2(Py)}2]2+which displays catalytic hydroxylation reactivity were investigated by density functional theory (DFT) studies including second-order perturbation theory and charge decomposition analysis (CDA).
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Affiliation(s)
- A. Hoffmann
- Lehrstuhl für Bioanorganische Chemie
- Institut für Anorganische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - S. Herres-Pawlis
- Lehrstuhl für Bioanorganische Chemie
- Institut für Anorganische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
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23
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Du L, Lan Z. Ultrafast structural flattening motion in photoinduced excited state dynamics of a bis(diimine) copper(i) complex. Phys Chem Chem Phys 2016; 18:7641-50. [DOI: 10.1039/c5cp06861d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The intriguing ultrafast photoinduced structural change dynamics of a prototypical Cu(i) complex, namely, [Cu(dmp)2]+ (dmp = 2,9-dimethyl-1,10-phenanthroline), is investigated based on the theoretical analysis of static and dynamical calculations at the all-atomic level.
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Affiliation(s)
- Likai Du
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- People's Republic of China
| | - Zhenggang Lan
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- People's Republic of China
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24
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Yan L, Lu Y, Li X. A density functional theory protocol for the calculation of redox potentials of copper complexes. Phys Chem Chem Phys 2016; 18:5529-36. [DOI: 10.1039/c5cp06638g] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The calculated redox potentials of copper complexes agree nicely with their corresponding experimental redox potentials.
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Affiliation(s)
- Liuming Yan
- Department of Chemistry
- College of Sciences
- Shanghai University
- Shanghai 200444
- China
| | - Yi Lu
- Department of Chemistry
- University of Illinois at Urbana-Champaign
- Urbana
- USA
| | - Xuejiao Li
- Department of Chemistry
- College of Sciences
- Shanghai University
- Shanghai 200444
- China
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25
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Şirikci G, Ancın NA, Öztaş SG. Theoretical studies of organotin(IV) complexes derived from ONO-donor type schiff base ligands. J Mol Model 2015; 21:221. [PMID: 26245450 DOI: 10.1007/s00894-015-2764-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 07/13/2015] [Indexed: 11/25/2022]
Abstract
In this work a molecular modeling study was carried out based on a series of organotin(IV) derivatives which were complexed with ONO-Donor type Schiff base ligands to build up a statistical data pool for researchers. For this purpose, various properties of the selected complexes such as energies, band gaps, chemical reactivity descriptors, polarizabilities, geometric parameters, (1)H-NMR, (13)C-NMR chemical shifting values were obtained through density functional theory using B3LYP, CAM-B3LYP, TPSSTPSS, TPSSh, HCTH, wB97XD, and MN12SX functionals. Empirical dispersion corrections were incorporated for some functionals and solvent effects were also taken into account through applying polarizable continuum model (PCM). (1)H-NMR, (13)C-NMR chemical shifts were calculated via linear regression analysis using either gauge invariant atomic orbital (GIAO) or continuous set of gauge transformations (CSGT) methods. While structural properties were being explored, quantitative effects of utilized functionals and empirical dispersion corrections over calculated properties were shown in detail.
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Affiliation(s)
- Gökhan Şirikci
- Department of Chemistry, Faculty of Science, Ankara University, 06100, Ankara, Turkey,
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26
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Rohrmüller M, Hoffmann A, Thierfelder C, Herres-Pawlis S, Schmidt WG. The Cu2O2torture track for a real-life system: [Cu2(btmgp)2O2]2+oxo and peroxo species in density functional calculations†. J Comput Chem 2015; 36:1672-85. [DOI: 10.1002/jcc.23983] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/26/2015] [Accepted: 05/28/2015] [Indexed: 01/23/2023]
Affiliation(s)
- Martin Rohrmüller
- Universität Paderborn, Department Physik, Lehrstuhl für Theoretische Physik; Pohlweg 55 33095 Paderborn Germany
| | - Alexander Hoffmann
- RWTH Aachen University, Fachgruppe Chemie, Lehrstuhl für Bioanorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Christian Thierfelder
- Universität Paderborn, Department Physik, Lehrstuhl für Theoretische Physik; Pohlweg 55 33095 Paderborn Germany
| | - Sonja Herres-Pawlis
- RWTH Aachen University, Fachgruppe Chemie, Lehrstuhl für Bioanorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Wolf Gero Schmidt
- Universität Paderborn, Department Physik, Lehrstuhl für Theoretische Physik; Pohlweg 55 33095 Paderborn Germany
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