1
|
Remya GS, Suresh CH. On the ineffectiveness of grubbs-type iron olefin metathesis catalysts: Role of spin-state isomerism and cyclopropanation. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
2
|
Suresh CH, Remya GS, Anjalikrishna PK. Molecular electrostatic potential analysis: A powerful tool to interpret and predict chemical reactivity. WIRES COMPUTATIONAL MOLECULAR SCIENCE 2022. [DOI: 10.1002/wcms.1601] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division CSIR‐National Institute for Interdisciplinary Science and Technology Thiruvananthapuram Kerala India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
| | - Geetha S. Remya
- Chemical Sciences and Technology Division CSIR‐National Institute for Interdisciplinary Science and Technology Thiruvananthapuram Kerala India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
| | - Puthannur K. Anjalikrishna
- Chemical Sciences and Technology Division CSIR‐National Institute for Interdisciplinary Science and Technology Thiruvananthapuram Kerala India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
| |
Collapse
|
3
|
Lamola JL, Adeyinka AS, Malan FP, Moshapo PT, Holzapfel CW, Maumela MC. Exploring steric and electronic parameters of biaryl phosphacycles. NEW J CHEM 2022. [DOI: 10.1039/d1nj05769c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Steric and electronic parameters of the newly developed biaryl phosphacycles derived from the phobane[3.3.1] (Phob) and phosphatrioxa-adamantane (Cg) moieties were quantified from various experimental and theoretical methods.
Collapse
Affiliation(s)
- Jairus L. Lamola
- Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Auckland Park 2006, South Africa
| | - Adedapo S. Adeyinka
- Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Auckland Park 2006, South Africa
| | - Frederick P. Malan
- Department of Chemistry, University of Pretoria, Hatfield Campus, Hartfield 0002, South Africa
| | - Paseka T. Moshapo
- Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Auckland Park 2006, South Africa
| | - Cedric W. Holzapfel
- Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Auckland Park 2006, South Africa
| | - Munaka Christopher Maumela
- Research Centre for Synthesis and Catalysis, Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Auckland Park 2006, South Africa
- Research and Technology, Sasol, 1 Klasie Havenga Rd, Sasolburg 1947, South Africa
| |
Collapse
|
4
|
Electrostatic Potential Topology for Probing Molecular Structure, Bonding and Reactivity. Molecules 2021; 26:molecules26113289. [PMID: 34072507 PMCID: PMC8198923 DOI: 10.3390/molecules26113289] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/16/2021] [Accepted: 05/25/2021] [Indexed: 11/18/2022] Open
Abstract
Following the pioneering investigations of Bader on the topology of molecular electron density, the topology analysis of its sister field viz. molecular electrostatic potential (MESP) was taken up by the authors’ groups. Through these studies, MESP topology emerged as a powerful tool for exploring molecular bonding and reactivity patterns. The MESP topology features are mapped in terms of its critical points (CPs), such as bond critical points (BCPs), while the minima identify electron-rich locations, such as lone pairs and π-bonds. The gradient paths of MESP vividly bring out the atoms-in-molecule picture of neutral molecules and anions. The MESP-based characterization of a molecule in terms of electron-rich and -deficient regions provides a robust prediction about its interaction with other molecules. This leads to a clear picture of molecular aggregation, hydrogen bonding, lone pair–π interactions, π-conjugation, aromaticity and reaction mechanisms. This review summarizes the contributions of the authors’ groups over the last three decades and those of the other active groups towards understanding chemical bonding, molecular recognition, and reactivity through topology analysis of MESP.
Collapse
|
5
|
Divya VV, Suresh CH. Design and DFT study of nitrogen-rich donor systems for improved photovoltaic performance in dye-sensitized solar cells. NEW J CHEM 2021. [DOI: 10.1039/d1nj00881a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Donor modifications, especially through N-annulation, for enhancing the structure–performance relationship of D–π–A systems for DSSC applications.
Collapse
Affiliation(s)
- Velayudhan V. Divya
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific and Innovative Research (AcSIR)
| |
Collapse
|
6
|
Rohman SS, Sarmah B, Borthakur B, Remya GS, Suresh CH, Phukan AK. Extending the Library of Boron Bases: A Contribution from Theory. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00317] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Bikash Sarmah
- Department of Chemical Sciences, Tezpur University, Napaam 784028, Assam India
| | - Bitupon Borthakur
- Department of Chemical Sciences, Tezpur University, Napaam 784028, Assam India
| | - Geetha S. Remya
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum, Kerala 695 019, India
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum, Kerala 695 019, India
| | - Ashwini K. Phukan
- Department of Chemical Sciences, Tezpur University, Napaam 784028, Assam India
| |
Collapse
|
7
|
Abstract
Ligands, especially phosphines and carbenes, can play a key role in modifying and controlling homogeneous organometallic catalysts, and they often provide a convenient approach to fine-tuning the performance of known catalysts. The measurable outcomes of such catalyst modifications (yields, rates, selectivity) can be set into context by establishing their relationship to steric and electronic descriptors of ligand properties, and such models can guide the discovery, optimization, and design of catalysts. In this review we present a survey of calculated ligand descriptors, with a particular focus on homogeneous organometallic catalysis. A range of different approaches to calculating steric and electronic parameters are set out and compared, and we have collected descriptors for a range of representative ligand sets, including 30 monodentate phosphorus(III) donor ligands, 23 bidentate P,P-donor ligands, and 30 carbenes, with a view to providing a useful resource for analysis to practitioners. In addition, several case studies of applications of such descriptors, covering both maps and models, have been reviewed, illustrating how descriptor-led studies of catalysis can inform experiments and highlighting good practice for model comparison and evaluation.
Collapse
Affiliation(s)
- Derek J Durand
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K
| | - Natalie Fey
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K
| |
Collapse
|
8
|
Remya GS, Suresh CH. Hydrogen elimination reactivity of ruthenium pincer hydride complexes: a DFT study. NEW J CHEM 2019. [DOI: 10.1039/c9nj03100f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pincer effect is explained for various pincer hydride complexes, differing in the donor atoms, using activation barriers, and MESP parameters.
Collapse
Affiliation(s)
- Geetha S. Remya
- Chemical Sciences and Technology Division
- CSIR–National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division
- CSIR–National Institute for Interdisciplinary Science and Technology
- Thiruvananthapuram
- India
- Academy of Scientific & Innovative Research (AcSIR)
| |
Collapse
|
9
|
Anjali BA, Suresh CH. Electronic effect of ligands vs. reduction potentials of Fischer carbene complexes of chromium: a molecular electrostatic potential analysis. NEW J CHEM 2018. [DOI: 10.1039/c8nj04184a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular electrostatic potential at the chromium centre (VCr) emerges as a powerful predictor of reduction potential (E0).
Collapse
Affiliation(s)
- Bai Amutha Anjali
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum 695019
- India
- Academy of Scientific & Innovative Research (AcSIR)
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum 695019
- India
- Academy of Scientific & Innovative Research (AcSIR)
| |
Collapse
|
10
|
Anjali BA, Suresh CH. Interpreting Oxidative Addition of Ph-X (X = CH 3, F, Cl, and Br) to Monoligated Pd(0) Catalysts Using Molecular Electrostatic Potential. ACS OMEGA 2017; 2:4196-4206. [PMID: 31457715 PMCID: PMC6641867 DOI: 10.1021/acsomega.7b00745] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 07/19/2017] [Indexed: 06/10/2023]
Abstract
A B3LYP density functional theory study on the oxidative addition of halogenobenzenes and toluene to monoligated zerovalent palladium catalysts (Pd-L) has been carried out using the "L" ligands such as phosphines, N-heterocyclic carbenes, alkynes, and alkenes. The electron deficiency of the undercoordinated Pd in Pd-L is quantified in terms of the molecular electrostatic potential at the metal center (V Pd), which showed significant variation with respect to the nature of the L ligand. Further, a strong linear correlation between ΔV Pd and the activation barrier (E act) of the reaction is established. The correlation plots between ΔV Pd and E act suggest that a priori prediction on the ability of the palladium complex to undergo oxidative addition is possible from V Pd analysis. In general, as the electron-donating nature of ligand increases, the suitability of Pd(0) catalyst to undergo oxidative addition increases. V Pd measures the electron-rich/-deficient nature of the metal center and provides a quantitative measure of the reactivity of the catalyst. By tuning the V Pd value, efficient catalysts can be designed.
Collapse
Affiliation(s)
- Bai Amutha Anjali
- Chemical
Sciences and Technology Division, CSIR-National
Institute for Interdisciplinary Science and Technology, Trivandrum 695019, India
- Academy
of Scientific & Innovative Research (AcSIR), New Delhi 110020, India
| | - Cherumuttathu H. Suresh
- Chemical
Sciences and Technology Division, CSIR-National
Institute for Interdisciplinary Science and Technology, Trivandrum 695019, India
- Academy
of Scientific & Innovative Research (AcSIR), New Delhi 110020, India
| |
Collapse
|
11
|
Anjali BA, Sayyed FB, Suresh CH. Correlation and Prediction of Redox Potentials of Hydrogen Evolution Mononuclear Cobalt Catalysts via Molecular Electrostatic Potential: A DFT Study. J Phys Chem A 2016; 120:1112-9. [DOI: 10.1021/acs.jpca.5b11543] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bai Amutha Anjali
- Chemical Sciences and Technology Division and ‡Academy of Scientific & Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, India
| | - Fareed Bhasha Sayyed
- Chemical Sciences and Technology Division and ‡Academy of Scientific & Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, India
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division and ‡Academy of Scientific & Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695019, India
| |
Collapse
|
12
|
Sandhya KS, Suresh CH. Designing metal hydride complexes for water splitting reactions: a molecular electrostatic potential approach. Dalton Trans 2015; 43:12279-87. [PMID: 24984110 DOI: 10.1039/c4dt01343c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The hydridic character of octahedral metal hydride complexes of groups VI, VII and VIII has been systematically studied using molecular electrostatic potential (MESP) topography. The absolute minimum of MESP at the hydride ligand (Vmin) and the MESP value at the hydride nucleus (VH) are found to be very good measures of the hydridic character of the hydride ligand. The increasing/decreasing electron donating feature of the ligand environment is clearly reflected in the increasing/decreasing negative character of Vmin and VH. The formation of an outer sphere metal hydride-water complex showing the HH dihydrogen interaction is supported by the location and the value of Vmin near the hydride ligand. A higher negative MESP suggested lower activation energy for H2 elimination. Thus, MESP features provided a way to fine-tune the ligand environment of a metal-hydride complex to achieve high hydridicity for the hydride ligand. The applicability of an MESP based hydridic descriptor in designing water splitting reactions is tested for group VI metal hydride model complexes of tungsten.
Collapse
Affiliation(s)
- K S Sandhya
- Inorganic and Theoretical Chemistry Section, CSTD, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum-695019, India.
| | | |
Collapse
|
13
|
Śliwa P, Handzlik J, Czeluśniak I. Alkynol polymerization catalysed by Grubbs-type and Hoveyda–Grubbs ruthenium alkylidene complexes: A computational study. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.05.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
14
|
Jover J, Fey N. The Computational Road to Better Catalysts. Chem Asian J 2014; 9:1714-23. [DOI: 10.1002/asia.201301696] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/17/2014] [Indexed: 11/07/2022]
|
15
|
Torker S, Khan RKM, Hoveyda AH. The influence of anionic ligands on stereoisomerism of Ru carbenes and their importance to efficiency and selectivity of catalytic olefin metathesis reactions. J Am Chem Soc 2014; 136:3439-55. [PMID: 24533571 DOI: 10.1021/ja410606b] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Investigations detailed herein provide insight regarding the mechanism of stereochemical inversion of stereogenic-at-Ru carbene complexes through a nonolefin metathesis-based polytopal rearrangement pathway. Computational analyses (DFT) reveal that there are two key factors that generate sufficient energy barriers that are responsible for the possibility of isolation and characterization of high-energy, but kinetically stable, intermediates: (1) donor-donor interactions that involve the anionic ligands and the strongly electron donating carbene groups and (2) dipolar effects arising from the syn relationship between the anionic groups (iodide and phenoxide). We demonstrate that a Brønsted acid lowers barriers to facilitate isomerization, and that the positive influence of a proton source is the result of its ability to diminish the repulsive electronic interactions originating from the anionic ligands. The implications of the present studies regarding a more sophisticated knowledge of the role of anionic units on the efficiency of Ru-catalyzed olefin metathesis reactions are discussed. The electronic basis for the increased facility with which allylic alcohols participate in olefin metathesis processes will be presented as well. Finally, we illustrate how a better understanding of the role of anionic ligands has served as the basis for successful design of Ru-based Z-selective catalysts for alkene metathesis.
Collapse
Affiliation(s)
- Sebastian Torker
- Department of Chemistry, Merkert Chemistry Center, Boston College , Chestnut Hill, Massachusetts 02467, United States
| | | | | |
Collapse
|
16
|
Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2011. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.05.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
17
|
Mitsunobu cyclodehydration of N-pivaloyl-2-aminophenethyl alcohol for asymmetric synthesis of trans-2,3-disubstituted indolines. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
18
|
Lesiuk M, Zachara J. Molecular electrostatic potential at the atomic sites in the effective core potential approximation. J Chem Phys 2013; 138:074107. [PMID: 23444997 DOI: 10.1063/1.4792198] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Considering calculations of the molecular electrostatic potential at the atomic sites (MEP@AS) in the presence of effective core potentials (ECP), we found that the consequent use of the definition of MEP@AS based on the energy derivative with respect to nuclear charge leads to a formula that differs by one term from the result of simple application of Coulomb's law. We have developed a general method to analytically treat derivatives of ECP with respect to nuclear charge. Benchmarking calculations performed on a set of simple molecules show that our formula leads to a systematic decrease in the error connected with the introduction of ECP when compared to all-electron results. Because of a straightforward implementation and relatively low costs of the developed procedure we suggest to use it by default.
Collapse
Affiliation(s)
- Michał Lesiuk
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | | |
Collapse
|
19
|
Development of a method for the preparation of ruthenium indenylidene-ether olefin metathesis catalysts. Molecules 2012; 17:5675-89. [PMID: 22580400 PMCID: PMC3383788 DOI: 10.3390/molecules17055675] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 04/18/2012] [Accepted: 04/23/2012] [Indexed: 12/03/2022] Open
Abstract
The reactions between several derivatives of 1-(3,5-dimethoxyphenyl)-prop-2-yn-1-ol and different ruthenium starting materials [i.e., RuCl2(PPh3)3 and RuCl2(p-cymene)(L), where L is tricyclohexylphosphine di-t-butylmethylphosphine, dicyclohexylphenylphosphine, triisobutylphosphine, triisopropylphosphine, or tri-n-propylphosphine] are described. Several of these reactions allow for the easy, in-situ and atom-economic preparation of olefin metathesis catalysts. Organic precursor 1-(3,5-dimethoxyphenyl)-1-phenyl-prop-2-yn-1-ol led to the formation of active ruthenium indenylidene-ether complexes, while 1-(3,5-dimethoxyphenyl)-prop-2-yn-1-ol and 1-(3,5-dimethoxyphenyl)-1-methyl-prop-2-yn-1-ol did not. It was also found that a bulky and strong σ-donor phosphine ligand was required to impart good catalytic activity to the new ruthenium complexes.
Collapse
|
20
|
Bernhammer JC, Huynh HV. Correlation of spectroscopically determined ligand donor strength and nucleophilicity of substituted pyrazoles. Dalton Trans 2012; 41:8600-8. [DOI: 10.1039/c2dt30526g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Sajith PK, Suresh CH. Quantification of the Trans Influence in Hypervalent Iodine Complexes. Inorg Chem 2011; 51:967-77. [DOI: 10.1021/ic202047g] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- P. K. Sajith
- Computational Modeling and Simulation Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum, India 695 019
| | - Cherumuttathu H. Suresh
- Computational Modeling and Simulation Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum, India 695 019
| |
Collapse
|
22
|
Mathew J, Suresh CH. Assessment of Steric and Electronic Effects of N-Heterocyclic Carbenes in Grubbs Olefin Metathesis Using Molecular Electrostatic Potential. Organometallics 2011. [DOI: 10.1021/om200196u] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|