1
|
Khan Z, Sekar N. Effect of spirocyclization of xanthene dyes on linear and nonlinear optical properties by considering D-π-A and D-A-D Systems: DFT and TD-DFT approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 314:124183. [PMID: 38554693 DOI: 10.1016/j.saa.2024.124183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/02/2024]
Abstract
Spirocyclization, a unique feature of xanthene dyes, makes it a promising candidate for developing fluorescent ratiometric probes for sensing, imaging, tracking, and labeling. How will this feature of xanthene dyes influence the linear and nonlinear optical properties? To examine the effect of spirocyclization of xanthene dyes, we have selected both the open-close form of rhodamine B and π-extended xanthene dyes substituted with thienyl and thieno[3,2-b]thienyl group at position 3 and 6. Here, rhodamine B will serve as the (Donor)D-π-A(Acceptor) system and thiophene-substituted xanthene dyes will serve as the D-A-D system. The geometry optimization of the close-open form of xanthene dyes at B3LYP/6-311++G(d,p) and CAM-B3LYP/6-311++G(d,p) revealed that the open form is energetically more stable in the S0 state than the closed form. The vertical excitation energy (ΔE), from Time-Dependent-Density Functional Theory (TD-DFT) calculation at B3LYP/6-311++G(d,p), CAM-B3LYP/6-311++G(d,p), ωB97XD/6-311++G(d,p) revealed that (ΔE)open < (ΔE)close. Further, the open form of xanthene dyes displays red-shifted absorption compared to the closed form. The λVt of xanthene dyes (open-close forms) is mainly assigned to HOMO → LUMO transition (S0 → S1) with % orbital contribution for open form ∼ 90 % and close form ∼ 60 %. The oscillator strength of xanthene dyes is obtained in the range of 0.01 - 1.74. The λVt of xanthene dyes is in agreement with experimental absorption. The static polarizability (α0), first-order hyperpolarizability (β0), second-order hyperpolarizability (γ), molecular hyperpolarizability (µβ0), and frequency-dependent hyperpolarizability (β1064), of the open form of xanthene dyes, were found to be higher than the close form. Thus, the open form of xanthene dyes will show superior linear and nonlinear optical properties than the closed form. The thienyl[3, 2-b] thieno substituted xanthene dye with red-shifted absorption shows higher α0, β0, γ, µβ0, β1064, and γ values, show better linear and NLO properties than thienyl and diethylamine substituted xanthene dyes.
Collapse
Affiliation(s)
- Zeba Khan
- Department of Dyestuff Technology (Currently Named As Department of Specialty Chemicals Technology), Institute of Chemical Technology, Matunga (E), Mumbai, Maharashtra 400019 India.
| | - Nagaiyan Sekar
- Department of Dyestuff Technology (Currently Named As Department of Specialty Chemicals Technology), Institute of Chemical Technology, Matunga (E), Mumbai, Maharashtra 400019 India.
| |
Collapse
|
2
|
Reaction pathways for palladium(I) reduction in laser-induced particle formation of Pd: An ab initio molecular orbital study. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2023.111857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
|
3
|
Guan J, Guo Z, Li X, Tang H. Theoretical Understanding of Reactions of Rhenium and Ruthenium Tris(thiolate) Complexes with Unsaturated Hydrocarbons: Noninnocent Nature of the Ligand, Mechanism, and Origin of Differential Reactivity. Inorg Chem 2023; 62:2548-2560. [PMID: 36719396 DOI: 10.1021/acs.inorgchem.2c02837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In retrospect to the complexity induced by the noninnocent ligands in identifying the transition metal's oxidation state and correlating the ligand's noninnocence with reactivity, the reactions of alkene/alkyne addition to rhenium/ruthenium tris(thiolate) complexes are particularly good cases for shedding light on the chemistry of the dppbt ligand, including its noninnocent nature, ligand-centered mechanism, and origin of differential reactivity. Density functional theory (DFT) combined with the high-level ab initio calculations performed herein demonstrates that, upon alkene/alkyne addition, the orbital symmetry properly regulates the reaction to form ligand-centered cis-interligand dithioethers as the most favorable pathway. The neutral and cationic Re and Ru dithioethers are revealed via DFT calculations to be in a low-spin ground state; on the contrary, high-level ab initio methods confirm that the dicationic Re-dithioethers exhibit obvious multireference character with antiferromagnetic coupling between Re-dyz and S1-py. The metal-stabilized thiyl radicals play a pivotal role in delivering the reactivity of [RuL3]+ and [ReL3]+/2+ toward alkene/alkyne rather than [ReL3], where [RuL3]+ and [ReL3]+/2+ present significant radical characters on ligand S2, yet neutral [ReL3] has little such feature, from which differential reactivity arises. Faster styrene addition to Ru tris(thiolate) in contrast to Re tris(thiolate) has been properly interpreted using DFT calculations with major products assigned. The deeper understanding gained in this work would illuminate further experimental exploration in adding alkene/alkyne to other metal-stabilized thiyl radicals.
Collapse
Affiliation(s)
- Jia Guan
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, Zhejiang, P. R. China
| | - Zeyi Guo
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, Zhejiang, P. R. China
| | - Xuelian Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, Zhejiang, P. R. China
| | - Hao Tang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, Zhejiang, P. R. China
| |
Collapse
|
4
|
Damour Y, Quintero-Monsebaiz R, Caffarel M, Jacquemin D, Kossoski F, Scemama A, Loos PF. Ground- and Excited-State Dipole Moments and Oscillator Strengths of Full Configuration Interaction Quality. J Chem Theory Comput 2023; 19:221-234. [PMID: 36548519 DOI: 10.1021/acs.jctc.2c01111] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We report ground- and excited-state dipole moments and oscillator strengths (computed in different "gauges" or representations) of full configuration interaction (FCI) quality using the selected configuration interaction method known as Configuration Interaction using a Perturbative Selection made Iteratively (CIPSI). Thanks to a set encompassing 35 ground- and excited-state properties computed in 11 small molecules, the present near-FCI estimates allow us to assess the accuracy of high-order coupled-cluster (CC) calculations including up to quadruple excitations. In particular, we show that incrementing the excitation degree of the CC expansion (from CC with singles and doubles (CCSD) to CC with singles, doubles, and triples (CCSDT) or from CCSDT to CC with singles, doubles, triples, and quadruples (CCSDTQ)) reduces the average error with respect to the near-FCI reference values by approximately 1 order of magnitude.
Collapse
Affiliation(s)
- Yann Damour
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Raúl Quintero-Monsebaiz
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Michel Caffarel
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Denis Jacquemin
- Nantes Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France.,Institut Universitaire de France (IUF), F-75005 Paris, France
| | - Fábris Kossoski
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Anthony Scemama
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Pierre-François Loos
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| |
Collapse
|
5
|
Liu Y, Zhong Z, Xu S. Pyrolysis Mechanism of Tetrahydrotricyclopentadiene by ReaxFF Reactive Molecular Dynamics Simulations. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
6
|
Sakamoto Y, Kikkawa S, Yokojima S, Matsushita N, Nakamura S. A Theoretical Study on Non‐Bridging Dimer Formation of a Cationic Platinum Complex with a Redox‐Active Ligand. ChemistrySelect 2022. [DOI: 10.1002/slct.202103827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yuki Sakamoto
- Nakamura Laboratory RIKEN, 2–1, Hirosawa Wako Saitama 351-0198 Japan
| | - Shoko Kikkawa
- Department of Chemistry Graduate School of Arts and Sciences The University of Tokyo 3-8-1 Komaba Meguro-ku Tokyo 153-8902 Japan
- Present address: Faculty of Pharmaceutical Sciences Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Satoshi Yokojima
- School of Pharmacy Tokyo University of Pharmacy and Life Sciences 1432-1 Horinouchi Hachioji Tokyo 192-0392 Japan
| | - Nobuyuki Matsushita
- Department of Chemistry and Research Center for Smart Molecules Rikkyo University 3-34-1 Nishi-Ikebukuro, Toshima-ku Tokyo 171-8501 Japan
| | | |
Collapse
|
7
|
Park JW, Al-Saadon R, MacLeod MK, Shiozaki T, Vlaisavljevich B. Multireference Electron Correlation Methods: Journeys along Potential Energy Surfaces. Chem Rev 2020; 120:5878-5909. [PMID: 32239929 DOI: 10.1021/acs.chemrev.9b00496] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Multireference electron correlation methods describe static and dynamical electron correlation in a balanced way and, therefore, can yield accurate and predictive results even when single-reference methods or multiconfigurational self-consistent field theory fails. One of their most prominent applications in quantum chemistry is the exploration of potential energy surfaces. This includes the optimization of molecular geometries, such as equilibrium geometries and conical intersections and on-the-fly photodynamics simulations, both of which depend heavily on the ability of the method to properly explore the potential energy surface. Because such applications require nuclear gradients and derivative couplings, the availability of analytical nuclear gradients greatly enhances the scope of quantum chemical methods. This review focuses on the developments and advances made in the past two decades. A detailed account of the analytical nuclear gradient and derivative coupling theories is presented. Emphasis is given to the software infrastructure that allows one to make use of these methods. Notable applications of multireference electron correlation methods to chemistry, including geometry optimizations and on-the-fly dynamics, are summarized at the end followed by a discussion of future prospects.
Collapse
Affiliation(s)
- Jae Woo Park
- Department of Chemistry, Chungbuk National University, Chungdae-ro 1, Cheongju 28644, Korea
| | - Rachael Al-Saadon
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Matthew K MacLeod
- Workday, 4900 Pearl Circle East, Suite 100, Boulder, Colorado 80301, United States
| | - Toru Shiozaki
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Quantum Simulation Technologies, Inc., 625 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Bess Vlaisavljevich
- Department of Chemistry, University of South Dakota, 414 East Clark Street, Vermillion, South Dakota 57069, United States
| |
Collapse
|
8
|
Laajimi M, Mtiri S, Ghalla H. Structure and stability of sodium-doped helium snowballs through DFT calculations. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-2556-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
9
|
Khatri V, Sahoo U, Kaur S, Rani R, Singh G, Kapur GS, Kashyap HK. Control of Ziegler–Natta catalyst activity by the structural design of alkoxysilane-based external donors. NEW J CHEM 2020. [DOI: 10.1039/d0nj00039f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, the evaluation of four commercial alkoxysilanes and two laboratory synthesized novel diethoxysilacycloalkanes as external donors towards propylene polymerization has been done.
Collapse
Affiliation(s)
- Vikas Khatri
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
| | - Usharani Sahoo
- Petrochemical & Polymer Department
- R&D Center
- Indian Oil Corporation Ltd
- Faridabad 121007
- India
| | - Sukhdeep Kaur
- Petrochemical & Polymer Department
- R&D Center
- Indian Oil Corporation Ltd
- Faridabad 121007
- India
| | - Rashmi Rani
- Petrochemical & Polymer Department
- R&D Center
- Indian Oil Corporation Ltd
- Faridabad 121007
- India
| | - Gurmeet Singh
- Petrochemical & Polymer Department
- R&D Center
- Indian Oil Corporation Ltd
- Faridabad 121007
- India
| | - Gurpreet Singh Kapur
- Petrochemical & Polymer Department
- R&D Center
- Indian Oil Corporation Ltd
- Faridabad 121007
- India
| | - Hemant K. Kashyap
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
| |
Collapse
|
10
|
Spanget-Larsen J. Dibenzo-p-dioxin. Twisted and puckered excited state molecular geometries. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.112551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
11
|
Wang S, Li C, Evangelista FA. Analytic gradients for the single-reference driven similarity renormalization group second-order perturbation theory. J Chem Phys 2019; 151:044118. [PMID: 31370522 DOI: 10.1063/1.5100175] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
We derive and implement analytic energy gradients for the single-reference driven similarity renormalization group second-order perturbation theory (DSRG-PT2). The resulting equations possess an asymptotic scaling that is identical to that of the second-order Møller-Plesset perturbation theory (MP2), indicating that the exponential regularizer in the DSRG equations does not introduce formal difficulties in the gradient theory. We apply the DSRG-PT2 method to optimizing the geometries of 15 small molecules. The equilibrium bond lengths computed with DSRG-PT2 are found similar to those of MP2, yielding a mean absolute error of 0.0033 Å and a standard deviation of 0.0045 Å when compared with coupled cluster with singles, doubles, and perturbative triples.
Collapse
Affiliation(s)
- Shuhe Wang
- Department of Chemistry and Cherry Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Chenyang Li
- Department of Chemistry and Cherry Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| | - Francesco A Evangelista
- Department of Chemistry and Cherry Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA
| |
Collapse
|
12
|
Feng X, Epifanovsky E, Gauss J, Krylov AI. Implementation of analytic gradients for CCSD and EOM-CCSD using Cholesky decomposition of the electron-repulsion integrals and their derivatives: Theory and benchmarks. J Chem Phys 2019; 151:014110. [DOI: 10.1063/1.5100022] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Xintian Feng
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, USA
- Q-Chem, Inc., 6601 Owens Drive, Suite 105, Pleasanton, California 94588, USA
| | - Evgeny Epifanovsky
- Q-Chem, Inc., 6601 Owens Drive, Suite 105, Pleasanton, California 94588, USA
| | - Jürgen Gauss
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Anna I. Krylov
- Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, USA
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| |
Collapse
|
13
|
Oyeniyi E, Akin-Ojo O. Efficient determination of excitation energies and absorption spectra for quantum dots and large systems from ab initio data. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
14
|
Han Y, Ma T, Chen F, Li W, Zhang J. Synergistic Mechanism of Ni Catalyst and Supercritical Water during Refractory Organic Wastewater Treatment. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05352] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | - Jinli Zhang
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| |
Collapse
|
15
|
Al-Amri AH, Elroby SA, Hilal RH. Theoretical insight into the structure and bonding characteristics of Bisphenol-A. QTAIM and NBO analyses. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2018. [DOI: 10.1142/s0219633618500347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Bisphenol-A (BPA) is considered as one of the most suspicious disruptors. Exposure to BPA may bring about possible human toxicities. BPA is an emerging contaminant widely used in manufacturing of epoxy, unsaturated polyester-styreneand polycarbonate resins. BPA is released into the environment through industrial and municipal wastewater discharges; its degradation products are probably more dangerous than BPA itself. The present study aims at a better insight into its ground state electronic and acid–base properties, and the mechanism of its thermal decomposition. Density functional theory (DFT) is utilized to study the geometry, electronic structure and electrostatic potential (ESP) for BPA. The molecule is noncoplanar with one of the phenolate moieties forced out of the plane by 57[Formula: see text]. This might very well determine the dissociation reaction pathway and in the meantime facilitates strong conjugation and considerable delocalization along the rest of the molecule. Proton affinities and deprotonation enthalpies are computed and discussed. Bonding characteristics are investigated within the natural bond-orbital (NBO) and quantum theory of atom in molecule (QTAIM) frameworks.
Collapse
Affiliation(s)
- Aeshah H. Al-Amri
- Chemistry Department, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 76971, Dammam, Saudi Arabia
| | - Shaaban A. Elroby
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Rifaat H. Hilal
- Chemistry Department, Faculty of Science, Cairo University, Cairo, Egypt
| |
Collapse
|
16
|
Jadhav AG, Rhyman L, Alswaidan IA, Ramasami P, Sekar N. Spectroscopic and DFT approach for structure property relationship of red emitting rhodamine analogues: A study of linear and nonlinear optical properties. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.03.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
17
|
Cornaton Y, Ringholm M, Ruud K. Complete analytic anharmonic hyper-Raman scattering spectra. Phys Chem Chem Phys 2018; 18:22331-42. [PMID: 27459194 DOI: 10.1039/c6cp03463b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the first computational treatment of the complete second-order vibrational perturbation theory applied to hyper-Raman scattering spectroscopy. The required molecular properties are calculated in a fully analytic manner using a recently developed program [Ringholm, Jonsson and Ruud, J. Comp. Chem., 2014, 35, 622] that utilizes recursive routines. For some of the properties, these calculations are the first analytic calculations of their kind at their respective levels of theory. We apply this approach to the calculation of the hyper-Raman spectra of methane, ethane and ethylene and compare these to available experimental data. We show that the anharmonic corrections have a larger effect on the vibrational frequencies than on the spectral intensities, but that the inclusion of combination and overtone bands in the anharmonic treatment can improve the agreement with the experimental data, although the quality of available experimental data limits a detailed comparison.
Collapse
Affiliation(s)
- Yann Cornaton
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway.
| | - Magnus Ringholm
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway.
| | - Kenneth Ruud
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway.
| |
Collapse
|
18
|
Katariya SB, Patil D, Rhyman L, Alswaidan IA, Ramasami P, Sekar N. Triphenylamine-based fluorescent NLO phores with ICT characteristics: Solvatochromic and theoretical study. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.08.084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
19
|
Warde U, Sekar N. Fluorescent Benzocoumarin-π-Extended Styryl Hybrids: Solvatochromism, Excess Dipole Moment, NLO Properties and DFT Study. J Fluoresc 2017; 28:293-309. [DOI: 10.1007/s10895-017-2192-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 10/27/2017] [Indexed: 11/29/2022]
|
20
|
Rehn DR, Dreuw A, Norman P. Resonant Inelastic X-ray Scattering Amplitudes and Cross Sections in the Algebraic Diagrammatic Construction/Intermediate State Representation (ADC/ISR) Approach. J Chem Theory Comput 2017; 13:5552-5559. [DOI: 10.1021/acs.jctc.7b00636] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dirk R. Rehn
- Division
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Andreas Dreuw
- Interdisciplinary
Center for Scientific Computing, University of Heidelberg, Im Neuenheimer
Feld 205, 69120 Heidelberg, Germany
| | - Patrick Norman
- Division
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| |
Collapse
|
21
|
Nonlinear Optical Properties of Pyrene Based Fluorescent Hemicurcuminoid and their BF 2 Complexes -Spectroscopic and DFT Studies. J Fluoresc 2017; 27:1777-1792. [PMID: 28550418 DOI: 10.1007/s10895-017-2116-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 05/08/2017] [Indexed: 10/19/2022]
Abstract
The acetyl acetone and benzoyl acetone pyrene based difluoroboron scaffolds and their respective decomplexed congeners were investigated for their nonlinear optical properties in various microenvironment. The geometries of the chromophore were optimized and electronic excitation properties were estimated using time dependant density functional theory. The vertical excitation properties were found to be complimentary to the experimental results. Nolinear optical properties were evaluated using solvatochromism and Density Functional Theory. The experimental nonlinear optical properties well correlated using Mulliken Hush parameters and also compared with calculated values. CAM-B3LYP results were found to be superior over the B3LYP and BHandHLYP methods. The positive solvatochromism in emission were well explained by multilinear regression and bond length alteration.
Collapse
|
22
|
Coumarin-Pyrazole Hybrid with Red Shifted ESIPT Emission and AIE Characteristics - a Comprehensive Study. J Fluoresc 2017; 27:1687-1707. [DOI: 10.1007/s10895-017-2106-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 04/26/2017] [Indexed: 12/20/2022]
|
23
|
Benzocoumarin-Styryl Hybrids: Aggregation and Viscosity Induced Emission Enhancement. J Fluoresc 2017; 27:1747-1758. [PMID: 28500536 DOI: 10.1007/s10895-017-2113-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 05/08/2017] [Indexed: 10/19/2022]
Abstract
Two benzo[h]chromen-3-yl)ethylidene) malononitrile styryl hybrid dyes are synthesized and characterized by NMR and elemental analysis. One is based on nitrogen donor and other on oxygen (3b and 3b respectively). Dyes are low emissive in the solution but dramatically showed increase in emission intensity in aggregates form in the THF (tetrahydrofuran) /water system. Dyes are also sensitive to viscosity and showed increased emission intensity in the DCM:PEG 400 system and DMF:PEG 400 system respectively. Dyes 3a and 3b showed higher viscosity sensitivity constant (0.67 and 0.39 respectively) in DMF:PEG 400 system compared to DCM:PEG 400 (0.47 and 0.21 respectively) system which is contrary to the traditional concept of FMRs. Results shows that lowering of twisted intramolecular charge transfer (TICT) and increase in intramolecular charge transfer (ICT) in the excited state could be the reason for such behavior in the aggregate and highly viscous state. This study may provide the new insights into the field of AIEE and FMR research of such hybrid molecules.
Collapse
|
24
|
Warde U, Nagaiyan S. Comprehensive study on excited state intramolecular proton transfer in 2-(benzo[d]thiazol-2-yl)-3-methoxynaphthalen-1-ol and 2-(benzo[d]thiazol-2-yl)naphthalene-1,3-diol: Effect of solvent, aggregation, viscosity and TDDFT study. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.12.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
25
|
Katariya S, Rhyman L, Alswaidan IA, Ramasami P, Sekar N. Triphenylamine-Based Fluorescent Styryl Dyes: DFT, TD-DFT and Non-Linear Optical Property Study. J Fluoresc 2017; 27:993-1007. [PMID: 28144800 DOI: 10.1007/s10895-017-2034-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 01/04/2017] [Indexed: 10/20/2022]
Abstract
The electronic structures and spectroscopic properties of triphenylamine-based monostyryl and bis(styryl) dyes were studied using quantum chemical methods. The ground-state geometries of these dyes were optimized using the density functional theory (DFT) method. The lowest singlet excited state was optimized using time-dependent density functional theory (TD-DFT). The absorption was also calculated using the ground-state geometries. All the calculations were carried out in the gas phase and in solvent. The results indicate that the absorption maxima calculated using the TD-DFT are in good agreement with those obtained experimentally. These dyes possess a large second-order non-linear property and this is mainly due to the strong donor-π-acceptor conjugation which is attributed to the excited state intramolecular charge transfer (ICT). There is a relationship between the hardness and first hyperpolarizability and second hyperpolarizability of mono- and bis(styryl) dyes. The efficiency of the intersystem crossing process can be improved by reducing the energy gap between the singlet and triplet excited states.
Collapse
Affiliation(s)
- Santosh Katariya
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai, MH, 400019, India
| | - Lydia Rhyman
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, 80837, Mauritius
| | - Ibrahim A Alswaidan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ponnadurai Ramasami
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, 80837, Mauritius. .,Department of Chemistry, College of Science Engineering and Technology, University of South Africa, P.O. Box 392, Pretoria, 0003, South Africa.
| | - Nagaiyan Sekar
- Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai, MH, 400019, India.
| |
Collapse
|
26
|
Tang H, Brothers EN, Hall MB. The Distinctive Electronic Structures of Rhenium Tris(thiolate) Complexes, an Unexpected Contrast to the Valence Isoelectronic Ruthenium Tris(thiolate) Complexes. Inorg Chem 2016; 56:583-593. [DOI: 10.1021/acs.inorgchem.6b02434] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hao Tang
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
| | | | - Michael B. Hall
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
| |
Collapse
|
27
|
Leicht D, Kaufmann M, Schwaab G, Havenith M. Infrared spectroscopy of the helium solvated cyclopentadienyl radical in the CH stretch region. J Chem Phys 2016; 145:074304. [DOI: 10.1063/1.4960781] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Daniel Leicht
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, Bochum, Germany
| | - Matin Kaufmann
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, Bochum, Germany
| | - Gerhard Schwaab
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, Bochum, Germany
| | - Martina Havenith
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, Bochum, Germany
| |
Collapse
|
28
|
Bykov D, Kristensen K, Kjærgaard T. The molecular gradient using the divide-expand-consolidate resolution of the identity second-order Møller-Plesset perturbation theory: The DEC-RI-MP2 gradient. J Chem Phys 2016; 145:024106. [DOI: 10.1063/1.4956454] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Dmytro Bykov
- Department of Chemistry, qLeap Center for Theoretical Chemistry, University of Aarhus, DK-8000 Århus C, Denmark
| | - Kasper Kristensen
- Department of Chemistry, qLeap Center for Theoretical Chemistry, University of Aarhus, DK-8000 Århus C, Denmark
| | - Thomas Kjærgaard
- Department of Chemistry, qLeap Center for Theoretical Chemistry, University of Aarhus, DK-8000 Århus C, Denmark
| |
Collapse
|
29
|
Zhu X, Shan Y, Xiong S, Shen J, Wu X. Brianyoungite/Graphene Oxide Coordination Composites for High-Performance Cu(2+) Adsorption and Tunable Deep-Red Photoluminescence. ACS APPLIED MATERIALS & INTERFACES 2016; 8:15848-15854. [PMID: 27258793 DOI: 10.1021/acsami.6b05464] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Graphene oxide (GO) is a good adsorbent for heavy-metal ions because the oxygen functional groups offer active adsorption sites, but a small-size GO with dense oxygen-containing groups has high water solubility causing difficulty in separation. Herein, GO is bound to large brianyoungite (BY) by Zn-O coordination via a hydrothermal reaction that produces BY-GO composites with hollow spherical and flakelike morphologies that are easy to remove. By producing abundant oxygen-containing groups on GO, the Cu(2+) adsorption capacity increases to 1724.1 mg/g, which is the highest value in graphene-related materials. The experimental and theoretical analysis clearly shows that the infrared spectral shifts toward the low-frequency side of C-O-H and O═C-O bending vibrations in the BY-GO composites stem from the Zn(2+) (or Cu(2+)) coordination with O atoms in GO. The BY-GO also exhibits tunable deep-red photoluminescence up to 750 nm with a quantum yield of about 1%, which may be useful in infrared optoelectronic devices and solar energy exploitation. The photoluminescence which is different from that previously reported from chemically derived GO can be attributed to the optical transition in the disorder-induced localized states of the carbon-oxygen functional groups.
Collapse
Affiliation(s)
- Xiaobin Zhu
- Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, People's Republic of China
| | - Yun Shan
- Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, People's Republic of China
- Key Laboratory of Advanced Functional Materials of Nanjing, Nanjing Xiaozhuang University , Nanjing 211171, People's Republic of China
| | - Shijie Xiong
- Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, People's Republic of China
| | - Jiancang Shen
- Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, People's Republic of China
| | - Xinglong Wu
- Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, People's Republic of China
| |
Collapse
|
30
|
Margar SN, Sekar N. Nonlinear optical properties of curcumin: solvatochromism-based approach and computational study. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1161248] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
31
|
Srivastava AK, Misra N. OLi3O− anion: Designing the strongest base to date using OLi3 superalkali. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.02.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
32
|
Cornaton Y, Ringholm M, Louant O, Ruud K. Analytic calculations of anharmonic infrared and Raman vibrational spectra. Phys Chem Chem Phys 2016; 18:4201-15. [PMID: 26784673 PMCID: PMC5063043 DOI: 10.1039/c5cp06657c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 01/05/2016] [Indexed: 11/21/2022]
Abstract
Using a recently developed recursive scheme for the calculation of high-order geometric derivatives of frequency-dependent molecular properties [Ringholm et al., J. Comp. Chem., 2014, 35, 622], we present the first analytic calculations of anharmonic infrared (IR) and Raman spectra including anharmonicity both in the vibrational frequencies and in the IR and Raman intensities. In the case of anharmonic corrections to the Raman intensities, this involves the calculation of fifth-order energy derivatives-that is, the third-order geometric derivatives of the frequency-dependent polarizability. The approach is applicable to both Hartree-Fock and Kohn-Sham density functional theory. Using generalized vibrational perturbation theory to second order, we have calculated the anharmonic infrared and Raman spectra of the non- and partially deuterated isotopomers of nitromethane, where the inclusion of anharmonic effects introduces combination and overtone bands that are observed in the experimental spectra. For the major features of the spectra, the inclusion of anharmonicities in the calculation of the vibrational frequencies is more important than anharmonic effects in the calculated infrared and Raman intensities. Using methanimine as a trial system, we demonstrate that the analytic approach avoids errors in the calculated spectra that may arise if numerical differentiation schemes are used.
Collapse
Affiliation(s)
- Yann Cornaton
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway.
| | - Magnus Ringholm
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway.
| | - Orian Louant
- Laboratory of Theoretical Chemistry, UCPTS, University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Kenneth Ruud
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Tromsø-The Arctic University of Norway, N-9037 Tromsø, Norway.
| |
Collapse
|
33
|
Tathe AB, Sekar N. Novel Fluorescent Phenazines : Synthesis, Characterization, Photophysical Properties and DFT Calculations. J Fluoresc 2015; 25:1403-15. [DOI: 10.1007/s10895-015-1631-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 07/26/2015] [Indexed: 10/23/2022]
|
34
|
Red Emitting Coumarins: Insights of Photophysical Properties with DFT Methods. J Fluoresc 2015; 25:1117-26. [DOI: 10.1007/s10895-015-1602-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 06/15/2015] [Indexed: 12/26/2022]
|
35
|
Ledermüller K, Schütz M. Local CC2 response method based on the Laplace transform: analytic energy gradients for ground and excited states. J Chem Phys 2015; 140:164113. [PMID: 24784259 DOI: 10.1063/1.4872169] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A multistate local CC2 response method for the calculation of analytic energy gradients with respect to nuclear displacements is presented for ground and electronically excited states. The gradient enables the search for equilibrium geometries of extended molecular systems. Laplace transform is used to partition the eigenvalue problem in order to obtain an effective singles eigenvalue problem and adaptive, state-specific local approximations. This leads to an approximation in the energy Lagrangian, which however is shown (by comparison with the corresponding gradient method without Laplace transform) to be of no concern for geometry optimizations. The accuracy of the local approximation is tested and the efficiency of the new code is demonstrated by application calculations devoted to a photocatalytic decarboxylation process of present interest.
Collapse
Affiliation(s)
- Katrin Ledermüller
- Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstraße 31, D-93040 Regensburg, Germany
| | - Martin Schütz
- Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstraße 31, D-93040 Regensburg, Germany
| |
Collapse
|
36
|
Sanders J, Andrade X, Aspuru-Guzik A. Compressed Sensing for the Fast Computation of Matrices: Application to Molecular Vibrations. ACS CENTRAL SCIENCE 2015; 1:24-32. [PMID: 27162943 PMCID: PMC4827532 DOI: 10.1021/oc5000404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Indexed: 06/05/2023]
Abstract
This article presents a new method to compute matrices from numerical simulations based on the ideas of sparse sampling and compressed sensing. The method is useful for problems where the determination of the entries of a matrix constitutes the computational bottleneck. We apply this new method to an important problem in computational chemistry: the determination of molecular vibrations from electronic structure calculations, where our results show that the overall scaling of the procedure can be improved in some cases. Moreover, our method provides a general framework for bootstrapping cheap low-accuracy calculations in order to reduce the required number of expensive high-accuracy calculations, resulting in a significant 3× speed-up in actual calculations.
Collapse
|
37
|
Analytic second derivative of the energy for density functional theory based on the three-body fragment molecular orbital method. J Chem Phys 2015; 142:124101. [DOI: 10.1063/1.4915068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
38
|
Datta D, Gauss J. Analytic first derivatives for a spin-adapted open-shell coupled cluster theory: Evaluation of first-order electrical properties. J Chem Phys 2014; 141:104102. [DOI: 10.1063/1.4894773] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Dipayan Datta
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Jürgen Gauss
- Institut für Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| |
Collapse
|
39
|
Ringholm M, Jonsson D, Bast R, Gao B, Thorvaldsen AJ, Ekström U, Helgaker T, Ruud K. Analytic cubic and quartic force fields using density-functional theory. J Chem Phys 2014; 140:034103. [DOI: 10.1063/1.4861003] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
40
|
Harris BL, White JM. Modes of neighbouring group participation by the methyl selenyl substituent in β-methylselenylmethyl-substituted 1-phenylethyl carbenium ions. MOLECULES (BASEL, SWITZERLAND) 2013; 18:11705-11. [PMID: 24071979 PMCID: PMC6270508 DOI: 10.3390/molecules181011705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/07/2013] [Accepted: 09/09/2013] [Indexed: 12/04/2022]
Abstract
Selenium substituents which are disposed β to an electron deficient centre, such as a carbocation p-orbital, or the π* orbital of an electron deficient p-system, interact in a stabilising way by a combination of C-Se hyperconjugation (σSe-C–π* interaction), and a through-space homoconjugative nSe–π* interaction. The relative importance of these two modes of interaction is dependant on the electron demand of the cation, with hyperconjugation predominating for low electron demand systems, and the nSe–π* interaction predominating for high electron demand cations.
Collapse
Affiliation(s)
- Benjamin L Harris
- School of Chemistry and BIO-21 Institute, University of Melbourne, Parkville 3010, Victoria, Australia.
| | | |
Collapse
|
41
|
Pulay P. Analytical derivatives, forces, force constants, molecular geometries, and related response properties in electronic structure theory. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2013. [DOI: 10.1002/wcms.1171] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Peter Pulay
- Department of Chemistry and Biochemistry University of Arkansas Fayetteville Arkansas USA
| |
Collapse
|
42
|
Ramabhadran RO, Raghavachari K. Extrapolation to the Gold-Standard in Quantum Chemistry: Computationally Efficient and Accurate CCSD(T) Energies for Large Molecules Using an Automated Thermochemical Hierarchy. J Chem Theory Comput 2013; 9:3986-94. [PMID: 26592394 DOI: 10.1021/ct400465q] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The CCSD(T) method is known as the gold-standard in quantum chemistry and has been the method of choice in quantum chemistry for over 20 years to obtain accurate bond energies and molecular properties. Its computational cost formally scales as the seventh power of the size of the system and can be prohibitive for large molecules. As part of our efforts to reduce the computational cost of the CCSD(T) method yet retain its accuracy, we present a simple, efficient, and user-friendly protocol to extrapolate to CCSD(T) energies in conjunction with MP2 energies. The method is based on the automated error-canceling thermochemical hierarchy previously developed by us called the Connectivity-Based Hierarchy (CBH). For a test set containing 30 diverse nonaromatic organic molecules and biomonomers, we obtain highly accurate extrapolated CCSD(T) energies (with a mean absolute error of only 0.2-0.3 kcal/mol with different basis-set). Additionally, the work also features the successful extrapolation to CCSD energies using a similar protocol.
Collapse
Affiliation(s)
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| |
Collapse
|
43
|
Voronova K, Purgel M, Udvardy A, Bényei AC, Kathó Á, Joó F. Hydrogenation and Redox Isomerization of Allylic Alcohols Catalyzed by a New Water-Soluble Pd–tetrahydrosalen Complex. Organometallics 2013. [DOI: 10.1021/om400555u] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Krisztina Voronova
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
| | - Mihály Purgel
- MTA-DE Research Group on Homogeneous Catalysis and Reaction Mechanisms, P.O. Box 7, H-4010 Debrecen, Hungary
| | - Antal Udvardy
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
| | - Attila C. Bényei
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
| | - Ágnes Kathó
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
| | - Ferenc Joó
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
- MTA-DE Research Group on Homogeneous Catalysis and Reaction Mechanisms, P.O. Box 7, H-4010 Debrecen, Hungary
| |
Collapse
|
44
|
Affiliation(s)
- H. S. Smalø
- a Department of Chemistry , University of Oslo , Oslo , Norway
| | - E. Uggerud
- a Department of Chemistry , University of Oslo , Oslo , Norway
| |
Collapse
|
45
|
Harris B, Savage GP, White JM. Hyperconjugation involving strained carbon-carbon bonds. Application of the variable oxygen probe to ester and ether derivatives of cubylmethanol. Org Biomol Chem 2013; 11:3151-8. [PMID: 23535874 DOI: 10.1039/c3ob40288f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Application of the variable oxygen probe to derivatives of (4-methoxycarbonyl)cubylmethanol 11 demonstrated a strong response of C-OR bond distance to the electron demand of the OR substituent, consistent with an enhanced σ-donor ability of the strained C-C bonds of cubane. The extent of cubane donor ability was found to be superior to an unstrained donor 13, comparing data extracted from the Cambridge Structural Database (T. W. Cole, Ph.D. Dissertation, University of Chicago, 1966), but weaker than the previously studied cyclopropane donors. Structural evidence is also found for σCC-π*CO interactions in these structures.
Collapse
Affiliation(s)
- Benjamin Harris
- School of Chemistry and the Bio21 Institute, The University of Melbourne, Australia
| | | | | |
Collapse
|
46
|
Akimov AV, Neukirch AJ, Prezhdo OV. Theoretical Insights into Photoinduced Charge Transfer and Catalysis at Oxide Interfaces. Chem Rev 2013; 113:4496-565. [DOI: 10.1021/cr3004899] [Citation(s) in RCA: 402] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Alexey V. Akimov
- Department of Chemistry, University of Rochester, Rochester, New York 14627,
United States
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973-5000,
United States
| | - Amanda J. Neukirch
- Department
of Physics and Astronomy, University of Rochester, Rochester, New York 14627,
United States
| | - Oleg V. Prezhdo
- Department of Chemistry, University of Rochester, Rochester, New York 14627,
United States
| |
Collapse
|
47
|
Cremer D. From configuration interaction to coupled cluster theory: The quadratic configuration interaction approach. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2013. [DOI: 10.1002/wcms.1131] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
48
|
Kristensen K, Jørgensen P, Jansík B, Kjærgaard T, Reine S. Molecular gradient for second-order Møller-Plesset perturbation theory using the divide-expand-consolidate (DEC) scheme. J Chem Phys 2012; 137:114102. [DOI: 10.1063/1.4752432] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
49
|
Krupa J, Olbert-Majkut A, Reva I, Fausto R, Wierzejewska M. Ultraviolet-Tunable Laser Induced Phototransformations of Matrix Isolated Isoeugenol and Eugenol. J Phys Chem B 2012; 116:11148-58. [DOI: 10.1021/jp306339g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Krupa
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383
Wrocław, Poland
| | - A. Olbert-Majkut
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383
Wrocław, Poland
| | - I. Reva
- Department of Chemistry, University of Coimbra, 3004-535 Coimbra,
Portugal
| | - R. Fausto
- Department of Chemistry, University of Coimbra, 3004-535 Coimbra,
Portugal
| | - M. Wierzejewska
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383
Wrocław, Poland
| |
Collapse
|
50
|
Ramakrishnan R, Nest M, Pollak E. Coherent control time-dependent methods for determining eigenvalues of Hermitian matrices with applications to electronic structure computations. Mol Phys 2012. [DOI: 10.1080/00268976.2012.668967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|