1
|
Mountessou BYG, Mbobda ASW, Stammler H, Akintemi EO, Mbah MB, Happi GM, Kouam SF, Lenta BN, Sewald N, Singh T, Mbouombouo IN. Crystal structure, spectroscopic analysis, electronic properties and molecular docking study of costunolide for inhibitor capacity against Onchocerca volvulus main protease. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
|
2
|
Abd SS, Alkam HH, Al-Shemary RKR. Composition, depiction, antibacterial, antioxidant, and cytotoxicity activities studies of a new nano-sized binuclear metal (II) Schiff base complexes. INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING ICCMSE 2021 2023. [DOI: 10.1063/5.0121776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
3
|
Vincy CD, George J, Tarika JDD, Balachandar S, Shihab NK, Beaula TJ. Bioactive Small Molecule, Piperazinium Bis(4-Hydroxybenzenesulphonate) upon Spectral Investigation, Hirshfeld Surface Analysis, Molecular Docking and ADMET Prediction: A Complement DFT Calculations. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2150658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- C. Dabora Vincy
- Department of Physics and Research Centre, Malankara Catholic College, Mariagiri, India
| | - Jesby George
- Department of Physics, St. Dominic’s College Kanjirapally, Parathode, India
| | - J. D. Deephlin Tarika
- Department of Physics and Research Centre, Malankara Catholic College, Mariagiri, India
| | - S. Balachandar
- Department of Chemistry, Vivekanandha College of Arts and Sciences for Women (Autonomous), Namakkal, India
| | - N. K. Shihab
- Department of Physics, TKM College of Engineering, Kollam, India
| | - T. Joselin Beaula
- Department of Physics and Research Centre, Malankara Catholic College, Mariagiri, India
| |
Collapse
|
4
|
Vasudevan P, Viswanathan E, Prasad KP, Kanagathara N, Jayaraman D. Investigation on Growth, Growth kinetics and Characterization of L-valine L-valinium perchlorate monohydrate single crystal. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
5
|
Hu X, Zhu Y, Wang J, Zheng G, Yao D, Lin B, Tian N, Zhou B, Long F. Stable organic-inorganic hybrid bismuth-halide: Exploration of crystal-structural, morphological, thermal, spectroscopic and optoelectronic properties. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
6
|
Evren Parlak A, Anwar Omar R, Koparir P, Ismael Salih M. Experimental, DFT and Theoretical Corrosion Study for 4-(((4-ethyl-5-(thiophen-2-yl)-4H-1,2,4-triazole-3-yl)thio)methyl)-7,8-dimethyl-2H-chromen-2-one. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
|
7
|
Holl M, Rasch ML, Becker L, Keller AL, Schultze-Rhonhof L, Ruoff F, Templin M, Keller S, Neis F, Keßler F, Andress J, Bachmann C, Krämer B, Schenke-Layland K, Brucker SY, Marzi J, Weiss M. Cell Type-Specific Anti-Adhesion Properties of Peritoneal Cell Treatment with Plasma-Activated Media (PAM). Biomedicines 2022; 10:biomedicines10040927. [PMID: 35453677 PMCID: PMC9032174 DOI: 10.3390/biomedicines10040927] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 11/16/2022] Open
Abstract
Postoperative abdominal adhesions are responsible for serious clinical disorders. Administration of plasma-activated media (PAM) to cell type-specific modulated proliferation and protein biosynthesis is a promising therapeutic strategy to prevent pathological cell responses in the context of wound healing disorders. We analyzed PAM as a therapeutic option based on cell type-specific anti-adhesive responses. Primary human peritoneal fibroblasts and mesothelial cells were isolated, characterized and exposed to different PAM dosages. Cell type-specific PAM effects on different cell components were identified by contact- and marker-independent Raman imaging, followed by thorough validation by specific molecular biological methods. The investigation revealed cell type-specific molecular responses after PAM treatment, including significant cell growth retardation in peritoneal fibroblasts due to transient DNA damage, cell cycle arrest and apoptosis. We identified a therapeutic dose window wherein specifically pro-adhesive peritoneal fibroblasts were targeted, whereas peritoneal mesothelial cells retained their anti-adhesive potential of epithelial wound closure. Finally, we demonstrate that PAM treatment of peritoneal fibroblasts reduced the expression and secretion of pro-adhesive cytokines and extracellular matrix proteins. Altogether, we provide insights into biochemical PAM mechanisms which lead to cell type-specific pro-therapeutic cell responses. This may open the door for the prevention of pro-adhesive clinical disorders.
Collapse
Affiliation(s)
- Myriam Holl
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
| | - Marie-Lena Rasch
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
| | - Lucas Becker
- Institute of Biomedical Engineering, Eberhard Karls University Tübingen, 72076 Tübingen, Germany;
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, Eberhard Karls University, 72076 Tübingen, Germany
| | - Anna-Lena Keller
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
| | - Laura Schultze-Rhonhof
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
| | - Felix Ruoff
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
| | - Markus Templin
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
| | - Silke Keller
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
| | - Felix Neis
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
| | - Franziska Keßler
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
| | - Jürgen Andress
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
| | - Cornelia Bachmann
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
| | - Bernhard Krämer
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
| | - Katja Schenke-Layland
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
- Institute of Biomedical Engineering, Eberhard Karls University Tübingen, 72076 Tübingen, Germany;
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, Eberhard Karls University, 72076 Tübingen, Germany
- Department of Medicine/Cardiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Sara Y. Brucker
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
| | - Julia Marzi
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
- Institute of Biomedical Engineering, Eberhard Karls University Tübingen, 72076 Tübingen, Germany;
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, Eberhard Karls University, 72076 Tübingen, Germany
| | - Martin Weiss
- Department of Women’s Health Tübingen, Eberhard Karls University Tübingen, 72076 Tübingen, Germany; (M.H.); (M.-L.R.); (L.S.-R.); (F.N.); (F.K.); (J.A.); (C.B.); (B.K.); (S.Y.B.)
- NMI Natural and Medical Sciences Institute, University Tübingen, 72770 Reutlingen, Germany; (A.-L.K.); (F.R.); (M.T.); (S.K.); (K.S.-L.); (J.M.)
- Correspondence:
| |
Collapse
|
8
|
Karpagakalyaani G, Magdaline JD, Chithambarathanu T. Comparative spectral (FT-IR, FT-Raman, UV) investigations, HOMO–LUMO, NBO and in-silico docking analysis of Nikethamide, niazid and 2-Mercaptonicotinic acid. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132032] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
9
|
Novena LM, Athimoolam S, Anitha R, Bahadur SA. Synthesis, crystal structure, hirshfeld surface analysis, spectral and quantum chemical studies of pharmaceutical cocrystals of a bronchodilator drug (Theophylline). J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131585] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
10
|
Sebastian S, Sylvestre S, Sundaraganesan N, Karthikeyan B, Silvan S. Conformational analysis, molecular structure, spectroscopic, NBO, reactivity descriptors, wavefunction and molecular docking investigations of 5,6-dimethoxy-1-indanone: A potential anti Alzheimer's agent. Heliyon 2022; 8:e08821. [PMID: 35128106 PMCID: PMC8808071 DOI: 10.1016/j.heliyon.2022.e08821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/15/2021] [Accepted: 01/20/2022] [Indexed: 11/25/2022] Open
Abstract
The objective of the present study is focused to elucidate the structure of potential anti-Alzheimer's compound 5,6-Dimethoxy-1-indanone (5,6-DMI) and study its binding interaction towards the active site by molecular docking studies. The structural and various spectroscopic tools are used to understand the various interaction behaviors of the title compound. The theoretical calculation of 5,6-DMI molecule is computed by Gaussian 09W software with Density functional B3LYP and CAM-B3LYP method utilizing 6-311G(d,p) as basis set. The Natural Bond Orbital (NBO) analysis has been performed to find all possible transition was correlate with electronic transition. The Non covalent interaction of 5,6-DMI molecule was examined by adopt Reduced Density Gradient (RDG) analysis and colour filled ELF diagram. Molecular docking results suggest that 5,6-DMI may exhibit inhibitory activity against apoE protein and may act as potential against Alzheimer's disease.
Collapse
Affiliation(s)
- S. Sebastian
- P.G & Research Department of Physics, St.Joseph's College of Arts & Science (Autonomous), Cuddalore, 607001, Tamilnadu, India
| | - S. Sylvestre
- Department of Chemistry, School of Mathematics and Natural Sciences, Mukuba University, Kitwe, 20382, Zambia
| | - N. Sundaraganesan
- Department of Physics (Engg.), Annamalai University, Annamalai Nagar, 608 002, India
| | - B. Karthikeyan
- Department of Chemistry, Annamalai University, Annamalai Nagar, 608 002, India
| | - S. Silvan
- P.G & Research Department of Biochemistry, St.Joseph's College of Arts & Science (Autonomous), Cuddalore, 607001, Tamilnadu, India
| |
Collapse
|
11
|
Charanya C, Sampathkrishnan S, Balamurugan N. Molecular Docking and Quantum Chemical Computations of 4-Chloro-2-[(furan-2-ylmethyl)amino]-5-sulfamoylbenzoic Acid Based on Density Functional Theory. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2021.2020309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- C. Charanya
- Department of Physics, Sri Venkateshwara College of Engineering, Sriperumbudur, Tamil Nadu, India
| | - S. Sampathkrishnan
- Department of Physics, Sri Venkateshwara College of Engineering, Sriperumbudur, Tamil Nadu, India
| | - N. Balamurugan
- Department of Physics, Dhanalakshmi College of Engineering, Tambaram, Chennai, Tamil Nadu, India
| |
Collapse
|
12
|
Rodrigues A, Silva S, Oliveira M, de Oliveira G, Novais A, de Paula G, Souza D, Belo E, Gester R, Andrade-Filho T. Prediction of electronic and vibrational properties of poly (hexamethylene biguanide) hydrochloride: A combined theoretical and experimental investigation. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
13
|
Sheeba BQ, Michael Mary MS, Amalanathan M, Job CB. Structural and vibrational spectral investigation on the identification of Non-Linear Optical properties and wave function analyses (electrostatic potential, electron localisation function, localised orbital locator) of 3-Ethoxy Salicilaldehyde. Molecular Simulation 2021. [DOI: 10.1080/08927022.2021.1962862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- B. Queen Sheeba
- Manonmaniam Sundaranar University, Tirunelveli, India
- Department of Physics & Research Centre, Scott Christian College, Nagercoil, India
| | | | - M. Amalanathan
- Department of Physics & Research Centre, Nanjil Catholic College of Arts and Science, Kaliyakkavilai, India
| | - C. Besky Job
- Department of Physics & Research Centre, Scott Christian College, Nagercoil, India
| |
Collapse
|
14
|
Sarvendra Kumar, Surbhi, Yadav MK. Optimized Molecular Geometries, Internal Coordinates, Vibrational Analysis, Thermodynamic Properties, First Hyperpolarizability and HOMO–LUMO Analysis of Duroquinone Using Density Functional Theory and Hartree–Fock Method. Russ J Phys Chem B 2021. [DOI: 10.1134/s1990793121090116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Jaya Reshmi D, Marshan Robert H, Aruldhas D, Joe IH, Balachandran S. Spectroscopic characterization and structural insights of 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione using vibrational, optical, electronic spectra, reduced density gradient and quantum chemical calculations. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129675] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
16
|
Sugiyama K, Marzi J, Alber J, Brauchle EM, Ando M, Yamashiro Y, Ramkhelawon B, Schenke-Layland K, Yanagisawa H. Raman microspectroscopy and Raman imaging reveal biomarkers specific for thoracic aortic aneurysms. Cell Rep Med 2021; 2:100261. [PMID: 34095874 DOI: 10.1016/j.xcrm.2021.100261] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 01/29/2021] [Accepted: 04/06/2021] [Indexed: 01/30/2023]
Abstract
Aortic rupture and dissection are life-threatening complications of ascending thoracic aortic aneurysms (aTAAs), and risk assessment has been largely based on the monitoring of lumen size enlargement. Temporal changes in the extracellular matrix (ECM), which has a critical impact on aortic remodeling, are not routinely evaluated, and cardiovascular biomarkers do not exist to predict aTAA formation. Here, Raman microspectroscopy and Raman imaging are used to identify spectral biomarkers specific for aTAAs in mice and humans by multivariate data analysis (MVA). Multivariate curve resolution-alternating least-squares (MCR-ALS) combined with Lasso regression reveals elastic fiber-derived (Ce1) and collagen fiber-derived (Cc6) components that are significantly increased in aTAA lesions of murine and human aortic tissues. In particular, Cc6 detects changes in amino acid residues, including phenylalanine, tyrosine, tryptophan, cysteine, aspartate, and glutamate. Ce1 and Cc6 may serve as diagnostic Raman biomarkers that detect alterations of amino acids derived from aneurysm lesions. Label-free Raman imaging of human/murine ascending thoracic aortic aneurysm (aTAA) Multivariate analysis of Raman spectra allows detection of aTAA molecular features Identification of spectral biomarkers for aTAA in elastic and collagen fibers Alterations in amino acid spectra correlate with aTAA formation
Collapse
|
17
|
Adam AMA, Saad HA, Alsuhaibani AM, Refat MS, Hegab MS. Charge-transfer chemistry of azithromycin, the antibiotic used worldwide to treat the coronavirus disease (COVID-19). Part III: A green protocol for facile synthesis of complexes with TCNQ, DDQ, and TFQ acceptors. J Mol Liq 2021; 335:116250. [PMID: 33903781 PMCID: PMC8061087 DOI: 10.1016/j.molliq.2021.116250] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/14/2021] [Accepted: 02/22/2021] [Indexed: 12/15/2022]
Abstract
Investigating the chemical properties of molecules used to combat the COVID-19 pandemic is of vital and pressing importance. In continuation of works aimed to explore the charge-transfer chemistry of azithromycin, the antibiotic used worldwide to treat COVID-19, the disease resulting from infection with the novel SARS-CoV-2 virus, in this work, a highly efficient, simple, clean, and eco-friendly protocol was used for the facile synthesis of charge-transfer complexes (CTCs) containing azithromycin and three π-acceptors: 7,7,8,8-tetracyanoquinodimethane (TCNQ), 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), and tetrafluoro-1,4-benzoquinone (TFQ). This protocol involves grinding bulk azithromycin as the donor (D) with the investigated acceptors at a 1:1 M ratio at room temperature without any solvent. We found that this protocol is environmentally benign, avoids hazardous organic solvents, and generates the desired CTCs with excellent yield (92–95%) in a straightforward means.
Collapse
Affiliation(s)
- Abdel Majid A Adam
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Hosam A Saad
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Amnah M Alsuhaibani
- Department of Physical Sport Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Moamen S Refat
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mohamed S Hegab
- Deanship of Supportive Studies (D.S.S.), Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| |
Collapse
|
18
|
Adam AMA, Saad HA, Alsuhaibani AM, Refat MS, Hegab MS. Charge-transfer chemistry of azithromycin, the antibiotic used worldwide to treat the coronavirus disease (COVID-19). Part II: Complexation with several π-acceptors (PA, CLA, CHL). J Mol Liq 2021; 325:115121. [PMID: 33518854 PMCID: PMC7837197 DOI: 10.1016/j.molliq.2020.115121] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/10/2020] [Accepted: 12/17/2020] [Indexed: 12/27/2022]
Abstract
Finding a vaccine or cure for the coronavirus disease (COVID-19) responsible for the worldwide pandemic and its economic, medical, and psychological burdens is one of the most pressing issues presently facing the global community. One of the current treatment protocols involves the antibiotic azithromycin (AZM) alone or in combination with other compounds. Obtaining additional insight into the charge-transfer (CT) chemistry of this antibiotic could help researchers and clinicians to improve such treatment protocols. Toward this aim, we investigated the CT interactions between AZM and three π-acceptors: picric acid (PA), chloranilic acid (CLA), and chloranil (CHL) in MeOH solvent. AZM formed colored products at a 1:1 stoichiometry with the acceptors through intermolecular hydrogen bonding. An n → π* interaction was also proposed for the AZM-CHL CT product. The synthesized CT products had markedly different morphologies from the free reactants, exhibiting a semi-crystalline structure composed of spherical particles with diameters ranging from 50 to 90 nm.
Collapse
Affiliation(s)
- Abdel Majid A Adam
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Hosam A Saad
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Amnah M Alsuhaibani
- Department of Physical Sport Science, Princess Nourah bint Abdulrahman University, 4545 - King Khalid Airport Unit No. 1, Riyadh 13415-7132, Saudi Arabia
| | - Moamen S Refat
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mohamed S Hegab
- Deanship of Supportive Studies (D.S.S.), Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| |
Collapse
|
19
|
Adam AMA, Saad HA, Alsuhaibani AM, Refat MS, Hegab MS. Charge-transfer chemistry of azithromycin, the antibiotic used worldwide to treat the coronavirus disease (COVID-19). Part I: Complexation with iodine in different solvents. J Mol Liq 2021; 325:115187. [PMID: 33390633 PMCID: PMC7764390 DOI: 10.1016/j.molliq.2020.115187] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/14/2020] [Accepted: 12/22/2020] [Indexed: 12/24/2022]
Abstract
Around the world, the antibiotic azithromycin (AZM) is currently being used to treat the coronavirus disease (COVID-19) in conjunction with hydroxychloroquine or chloroquine. Investigating the chemical and physical properties of compounds used alone or in combination to combat the COVID-19 pandemic is of vital and pressing importance. The purpose of this study was to characterize the charge transfer (CT) complexation of AZM with iodine in four different solvents: CH2Cl2, CHCl3, CCl4, and C6H5Cl. AZM reacted with iodine at a 1:1 M ratio (AZM to I2) in the CHCl3 solvent and a 1:2 M ratio in the other three solvents, as evidenced by data obtained from an elemental analysis of the solid CT products and spectrophotometric titration and Job's continuous variation method for the soluble CT products. Data obtained from UV-visible and Raman spectroscopies indicated that AZM strongly interacted with iodine in the CH2Cl2, CCl4, and C6H5Cl solvents by a physically potent n→σ* interaction to produce a tri-iodide complex formulated as [AZM·I+]I3 -. XRD and TEM analyses revealed that, in all solvents, the AZM-I2 complex possessed an amorphous structure composed of spherical particles ranging from 80 to 110 nm that tended to aggregate into clusters. The findings described in the present study will hopefully contribute to optimizing the treatment protocols for COVID-19.
Collapse
Affiliation(s)
- Abdel Majid A Adam
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Hosam A Saad
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Amnah M Alsuhaibani
- Department of Physical Sport Science, Princess Nourah bint Abdulrahman University, 4545 - King Khalid Airport Unit No. 1, Riyadh 13415-7132, Saudi Arabia
| | - Moamen S Refat
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Mohamed S Hegab
- Deanship of Supportive Studies (D.S.S.), Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| |
Collapse
|
20
|
Sivakumar C, Balachandran V, Narayana B, Salian VV, Revathi B, Shanmugapriya N, Vanasundari K. Molecular spectroscopic investigation, quantum chemical, molecular docking and biological evaluation of 2-(4-Chlorophenyl)-1-[3-(4-chlorophenyl)-5-[4-(propan-2-yl) phenyl-3, 5-dihydro-1H-pyrazole-yl] ethanone. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
21
|
Sagdinc SG, Akcay BK, Yildiz SZ, Isik IB. Single-crystal X-ray structural characterization, Hirshfeld surface analysis, electronic properties, NBO, and NLO calculations and vibrational analysis of the monomeric and dimeric forms of 5-nitro-2-oxindole. NEW J CHEM 2021. [DOI: 10.1039/d1nj00264c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The information of interactions is given by RDG versus sign(λ2)ρ product of the sign of the second largest eigenvalue of electron density Hessian matrix and electron density) investigated by RDG surface analysis.
Collapse
Affiliation(s)
| | - Banu Kevser Akcay
- Department of Physics, Science and Art Faculty
- Kocaeli University
- 41380 Umuttepe
- Turkey
| | - Salih Zeki Yildiz
- Department of Chemistry
- Faculty of Arts and Sciences
- Sakarya University
- 54187 Serdivan
- Turkey
| | - Ilknur Baldan Isik
- Department of Physics, Science and Art Faculty
- Kocaeli University
- 41380 Umuttepe
- Turkey
| |
Collapse
|
22
|
Ito H, Uragami N, Miyazaki T, Yang W, Issha K, Matsuo K, Kimura S, Arai Y, Tokunaga H, Okada S, Kawamura M, Yokoyama N, Kushima M, Inoue H, Fukagai T, Kamijo Y. Highly accurate colorectal cancer prediction model based on Raman spectroscopy using patient serum. World J Gastrointest Oncol 2020; 12:1311-1324. [PMID: 33250963 PMCID: PMC7667458 DOI: 10.4251/wjgo.v12.i11.1311] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/28/2020] [Accepted: 10/19/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is an important disease worldwide, accounting for the second highest number of cancer-related deaths and the third highest number of new cancer cases. The blood test is a simple and minimally invasive diagnostic test. However, there is currently no blood test that can accurately diagnose CRC.
AIM To develop a comprehensive, spontaneous, minimally invasive, label-free, blood-based CRC screening technique based on Raman spectroscopy.
METHODS We used Raman spectra recorded using 184 serum samples obtained from patients undergoing colonoscopies. Patients with malignant tumor histories as well as those with cancers in organs other than the large intestine were excluded. Consequently, the specific diseases of 184 patients were CRC (12), rectal neuroendocrine tumor (2), colorectal adenoma (68), colorectal hyperplastic polyp (18), and others (84). We used the 1064-nm wavelength laser for excitation. The power of the laser was set to 200 mW.
RESULTS Use of the recorded Raman spectra as training data allowed the construction of a boosted tree CRC prediction model based on machine learning. Therefore, the generalized R2 values for CRC, adenomas, hyperplastic polyps, and neuroendocrine tumors were 0.9982, 0.9630, 0.9962, and 0.9986, respectively.
CONCLUSION For machine learning using Raman spectral data, a highly accurate CRC prediction model with a high R2 value was constructed. We are currently planning studies to demonstrate the accuracy of this model with a large amount of additional data.
Collapse
Affiliation(s)
- Hiroaki Ito
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Naoyuki Uragami
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | | | | | - Kenji Issha
- Fuji Technical Research Inc., Yokohama 220-6215, Japan
| | - Kai Matsuo
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Satoshi Kimura
- Department of Laboratory Medicine and Central Clinical Laboratory, Showa University Northern Yokohama Hospital, Yokohama 224-8503, Japan
| | - Yuji Arai
- Department of Clinical Laboratory, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Hiromasa Tokunaga
- Department of Clinical Laboratory, Showa University Hospital, Tokyo 142-8555, Japan, BML Inc., Tokyo 151-0051, Japan
| | - Saiko Okada
- Department of Clinical Laboratory, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Machiko Kawamura
- Department of Hematology, Saitama Cancer Center, Inamachi, Saitama 362-0806, Japan
| | - Noboru Yokoyama
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Miki Kushima
- Department of Pathology, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Haruhiro Inoue
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Takashi Fukagai
- Department of Urology, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Yumi Kamijo
- Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| |
Collapse
|
23
|
İlkay Yıldırım, Fırıncı R, Günay ME, Özdemir N. Synthesis, Spectroscopy, X-ray Crystallography, and DFT Studies of Dichlorobis[1-(allyl)-1H-imidazole-κN3]copper(II). Russ J Phys Chem 2020. [DOI: 10.1134/s0036024419130351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
24
|
Kanmazalp SD, Macit M, Dege N. Hirshfeld surface, crystal structure and spectroscopic characterization of (E)-4-(diethylamino)-2-((4-phenoxyphenylimino)methyl)phenol with DFT studies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
25
|
Liang X, Chen Y, Wang L, Zhang F, Fan Z, Cao T, Cao Y, Zhu H, He X, Deng B, You Y, Dong Y, Zhao Y. Effect of carbon-skeleton isomerism on the dielectric properties and proton conduction of organic cocrystal compounds assembled from 1,2,4,5-benzenetetracarboxylic acid and piperazine derivatives. NEW J CHEM 2019. [DOI: 10.1039/c9nj01412h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Two isostructural 2D supramolecular cocrystal compounds show different dielectric responses and proton conductivities due to the alteration of the carbon-skeleton of piperazine derivatives.
Collapse
|
26
|
Sarojinidevi K, Subramani P, Jeeva M, Sundaraganesan N, SusaiBoobalan M, VenkatesaPrabhu G. Synthesis, molecular structure, quantum chemical analysis, spectroscopic and molecular docking studies of N-(Morpholinomethyl) succinimide using DFT method. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.07.101] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
27
|
Parsaee Z, Karachi N, Razavi R. Ultrasound assisted fabrication of a novel optode base on a triazine based Schiff base immobilized on TEOS for copper detection. Ultrason Sonochem 2018; 47:36-46. [PMID: 29908605 DOI: 10.1016/j.ultsonch.2018.04.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 03/26/2018] [Accepted: 04/17/2018] [Indexed: 06/08/2023]
Abstract
This work introduces novel selective and sensitive optical sensor based on a nano sized triazine based Schiff base (H2L) immbolized on a transparent glass substrate through the sol-gel process to detection of copper (II) ions in aqueous solutions. This sensor can determine the copper (II) in the range of 8.54 × 10-8-1.0 × 10-5 mol L-1 with a low detection limit of 1.53 × 10-8 mol L-1. The optimized geometry of H2L and its copper complex was obtained based on DFT/B3LYP levels of theory with B3LYP/6-311 + G(d,p) and LANL2DZ/6-311 + G(d,p) basis sets respectively. The calculated electronic properties of them including the molecular orbital, Mulliken population analysis, contour of electrostatic potential, and molecular electrostatic potential map confirmed the behavior of the sensor. Some advantage of the fabricated sensor such as high selectivity, sensitivity, short response time, easy production, fast regeneration, low cost, being portable and user friendly can make it a good choice to detection of Cu(II) ion in various application. The suggested sensor was revealed excellent sensitivity in the natural samples that confirmed by Inductively Coupled Plasma-Mass (ICP) spectrometry method.
Collapse
Affiliation(s)
- Zohreh Parsaee
- Elite Club, Bushehr Branch, Islamic Azad University, Bushehr, Iran.
| | - Nima Karachi
- Department of Chemistry, Islamic Azad University, Marvdasht Branch, Marvdasht, Iran
| | - Razieh Razavi
- Department of Chemistry, Faculty of Science, University of Jiroft, Jiroft, Iran
| |
Collapse
|
28
|
Kumar S, Surbhi, Yadav MK. Vibrational Spectroscopic Investigation, First Hyper Polarizability and Homo–Lumo Analysis of Tetrahydroxy-1,4Quinone Hydrate Using Density Functional Theory and Hartree-Fock Method. Russ J Phys Chem B 2018. [DOI: 10.1134/s1990793118030132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
29
|
Vatsal M, Devi V, Awasthi P. Structural and theoretical study of 1-[1-oxo-3-phenyl-(2-benzosulfonamide)-propyl amido] – anthracene-9,10-dione to be i-motif inhibitor. J Mol Struct 2018; 1157:230-8. [DOI: 10.1016/j.molstruc.2017.12.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
Parsaee Z, Haratipour P, Lariche MJ, Vojood A. A novel high performance nano chemosensor for copper (II) ion based on an ultrasound-assisted synthesized diphenylamine-based Schiff base: Design, fabrication and density functional theory calculations. Ultrason Sonochem 2018; 41:337-349. [PMID: 29137760 DOI: 10.1016/j.ultsonch.2017.09.054] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 09/28/2017] [Accepted: 09/29/2017] [Indexed: 06/07/2023]
Abstract
A novel high selective colorimetric chemosensor was introduced based on a nano diphenyl-based Schiff base (H2L), 2,2'-((1E,1'E)-(((hexylazanediyl)bis(4,1-phenylene))bis(methanylylidene))bis(azanylylidene))bis(4-methylphenol) that synthesized using sonochemical method. H2L was characterized by FT-IR, MS, TGA, 1H NMR, 13C NMR, SEM and elemental analysis techniques, then fabricated as the portable strips for sensing copper (II) ions in aqueous media. The binding interaction between H2L and various metal ions was investigated by UV-Vis spectroscopic that showed favorable coordination toward Cu2+ ion. H2L exhibited binding-induced color changes from yellow to pink and practically no interference in the presence of other metal ions, i.e., Cr2+, Mn2+, Fe2+, Co2+, Ni2+, Zn2+, Cd2+, Hg2+, Pb2+, Mg2+ and Ca2+. The chemsensor showd the color change from yellow to pink in presence of copper (II) ion in aqueous media due to binging of H2L and Cu (II). This sensor can determine the copper (II) at in the rang of 7.5 × 10-8-1.8 × 10-5 mol L-1 with a correlation equation: Absorbance = 0.0450[Cu2+] × 10-6 + 0.71 and R2 = 0.975 and low detection limit of 1.89 × 10-8 mol L-1. Density functional theory (DFT) calculations were carried out at the B3LYP levels of theory with B3LYP/6-311+G(d,p) and LANL2DZ/6-311+G(d,p) basis sets for chemosensor and its copper complex respectively. The optimized geometry, harmonic vibrational frequencies, 1H NMR and 13C NMR chemical, Molecular orbital (M.O.), Mulliken population analysis (MPA), contour of Electrostatic Potential (ESP) and Molecular Electrostatic Potential (MEP) map of H2L were calculated which show good agreement with behavior of sensor for detection of Cu2+ ion.
Collapse
Affiliation(s)
- Zohreh Parsaee
- Young Researchers and Elite Club, Bushehr Branch, Islamic Azad University, Bushehr, Iran.
| | - Pouya Haratipour
- Department of Chemistry, Sharif University of Technology, Tehran, Iran; Universal Scientific Education and Research Network (USERN), Los Angeles, CA, USA
| | | | - Arash Vojood
- Young Researchers and Elite Club, Ardabil Branch, Islamic Azad University, Ardabil, Iran
| |
Collapse
|
31
|
Parsaee Z. Sonochemical synthesis and DFT studies of nano novel Schiff base cadmium complexes: Green, efficient, recyclable catalysts and precursors of Cd NPs. J Mol Struct 2017; 1146:644-59. [DOI: 10.1016/j.molstruc.2017.06.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
32
|
Parsaee Z, Mohammadi K. Synthesis, characterization, nano-sized binuclear nickel complexes, DFT calculations and antibacterial evaluation of new macrocyclic Schiff base compounds. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.02.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
33
|
Chihaoui N, Hamdi B, Zouari R. Structural elucidation, theoretical investigation using DFT calculations, thermal and dielectric analyses of new zinc(II) based inorganic–organic hybrid. CHINESE CHEM LETT 2017; 28:642-50. [DOI: 10.1016/j.cclet.2016.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
34
|
Murugavel S, Vetri velan V, Kannan D, Bakthadoss M. Synthesis of a novel methyl(2E)-2-{[N-(2-formylphenyl)(4-methylbenzene) sulfonamido]methyl}-3-(2-methoxyphenyl)prop-2-enoate: Molecular structure, spectral, antimicrobial, molecular docking and DFT computational approaches. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
35
|
Bhatt H, Mishra AK, Murli C, Verma AK, Garg N, Deo MN, Sharma SM. Proton transfer aiding phase transitions in oxalic acid dihydrate under pressure. Phys Chem Chem Phys 2016; 18:8065-74. [PMID: 26924455 DOI: 10.1039/c5cp07442h] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxalic acid dihydrate, an important molecular solid in crystal chemistry, ecology and physiology, has been studied for nearly 100 years now. The most debated issues regarding its proton dynamics have arisen due to an unusually short hydrogen bond between the acid and water molecules. Using combined in situ spectroscopic studies and first-principles simulations at high pressures, we show that the structural modification associated with this hydrogen bond is much more significant than ever assumed. Initially, under pressure, proton migration takes place along this strong hydrogen bond at a very low pressure of 2 GPa. This results in the protonation of water with systematic formation of dianionic oxalate and hydronium ion motifs, thus reversing the hydrogen bond hierarchy in the high pressure phase II. The resulting hydrogen bond between a hydronium ion and a carboxylic group shows remarkable strengthening under pressure, even in the pure ionic phase III. The loss of cooperativity of hydrogen bonds leads to another phase transition at ∼ 9 GPa through reorientation of other hydrogen bonds. The high pressure phase IV is stabilized by a strong hydrogen bond between the dominant CO2 and H2O groups of oxalate and hydronium ions, respectively. These findings suggest that oxalate systems may provide useful insights into proton transfer reactions and assembly of simple molecules under extreme conditions.
Collapse
Affiliation(s)
- Himal Bhatt
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
| | - A K Mishra
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
| | - Chitra Murli
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
| | - Ashok K Verma
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
| | - Nandini Garg
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
| | - M N Deo
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
| | - Surinder M Sharma
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
| |
Collapse
|
36
|
Zhao Y, Wang N, Pang SF, Zhang YH. In-situ micro-FTIR spectroscopic observation on the hydration process of Poria cocos. Spectrochim Acta A Mol Biomol Spectrosc 2016; 164:61-66. [PMID: 27082652 DOI: 10.1016/j.saa.2016.03.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 03/08/2016] [Accepted: 03/23/2016] [Indexed: 06/05/2023]
Abstract
In Poria cocos, triterpene compound and polysaccharides are the main compositions. The heteropolysaccharide was identified as a linear chain of β-(1→3)-d-glucan, which has the strong water absorbing capacity. In order to investigate the effect of water on the structure of Poria cocos, which belongs to a kind of Polyporaceae, the Micro-Fourier transform infrared spectroscopy (micro-FTIR) technique has been employed with the ambient relative humidity (RH) increasing. The gained IR spectra are measured and analyzed in detail. Because of strong overlaps between some bands, the differential spectra and band decompositions have been applied to analyze the structural change. IR spectra show the transformation of hydrogen bonds with the RH. The blue shift of the CH2 bending vibration from 1417 to 1424cm(-1) with the increase in RH means that the hydrogen bonds are formed between CH2 groups and water molecules at lower RH and some transferred to weak hydrogen bonds. The further study suggests that the C1OH, C2OH, and C3OH groups from polysaccharide bond formed C1OH⋯H2O, C2OH⋯H2O, and C3OH⋯H2O steady modes, respectively, with water molecules.
Collapse
Affiliation(s)
- Yi Zhao
- The Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Na Wang
- The Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Shu-Feng Pang
- The Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
| | - Yun-Hong Zhang
- The Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| |
Collapse
|
37
|
Murugavel S, Vetri velan V, Kannan D, Bakthadoss M. Experimental and computational approaches of a novel methyl (2E)-2-{[N-(2-formylphenyl)(4-methylbenzene)sulfonamido]methyl}-3-(4-chlorophenyl)prop-2-enoate: A potential antimicrobial agent and an inhibition of penicillin-binding protein. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.084] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
38
|
Murugavel S, Vetri Velan V, Kannan D, Bakthadoss M. Synthesis, crystal structure analysis, spectral investigations, DFT computations, Biological activities and molecular docking of methyl(2E)-2-{[N-(2-formylphenyl)(4-methylbenzene) sulfonamido]methyl}-3-(4-fluorophenyl)prop-2-enoate, a potential bioactive agent. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.11.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
39
|
Bhatt H, Murli C, Mishra AK, Verma AK, Garg N, Deo MN, Chitra R, Sharma SM. Hydrogen Bond Symmetrization in Glycinium Oxalate under Pressure. J Phys Chem B 2016; 120:851-9. [DOI: 10.1021/acs.jpcb.5b11507] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Himal Bhatt
- High Pressure and Synchrotron Radiation Physics Division, ‡Solid State Physics
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Chitra Murli
- High Pressure and Synchrotron Radiation Physics Division, ‡Solid State Physics
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - A. K. Mishra
- High Pressure and Synchrotron Radiation Physics Division, ‡Solid State Physics
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Ashok K. Verma
- High Pressure and Synchrotron Radiation Physics Division, ‡Solid State Physics
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Nandini Garg
- High Pressure and Synchrotron Radiation Physics Division, ‡Solid State Physics
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - M. N. Deo
- High Pressure and Synchrotron Radiation Physics Division, ‡Solid State Physics
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - R. Chitra
- High Pressure and Synchrotron Radiation Physics Division, ‡Solid State Physics
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Surinder M. Sharma
- High Pressure and Synchrotron Radiation Physics Division, ‡Solid State Physics
Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| |
Collapse
|
40
|
Parsaee Z, Mohammadi K, Ghahramaninezhad M, Hosseinzadeh B. A novel nano-sized binuclear nickel(ii) Schiff base complex as a precursor for NiO nanoparticles: synthesis, characterization, DFT study and antibacterial activity. NEW J CHEM 2016. [DOI: 10.1039/c6nj02642g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We prepared a new nano-hexadentate Schiff base and its nickel(ii) complex using an ultrasonic method, which produced NiO with an average size of 53 nm.
Collapse
Affiliation(s)
- Zohreh Parsaee
- Chemistry Department
- Faculty of Sciences
- Persian Gulf University
- Bushehr 75169
- Iran
| | - Khosro Mohammadi
- Chemistry Department
- Faculty of Sciences
- Persian Gulf University
- Bushehr 75169
- Iran
| | | | | |
Collapse
|
41
|
Arjunan V, Santhanam R, Marchewka M, Mohan S, Yang H. Structure activity studies of an analgesic drug tapentadol hydrochloride by spectroscopic and quantum chemical methods. J Mol Struct 2015; 1100:188-202. [DOI: 10.1016/j.molstruc.2015.07.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
42
|
Arockia doss M, Savithiri S, Rajarajan G, Thanikachalam V, Saleem H. Synthesis, spectroscopic (FT-IR, FT-Raman, UV and NMR) and computational studies on 3t-pentyl-2r,6c-diphenylpiperidin-4-one semicarbazone. Spectrochim Acta A Mol Biomol Spectrosc 2015; 148:189-202. [PMID: 25879989 DOI: 10.1016/j.saa.2015.03.117] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 03/11/2015] [Accepted: 03/27/2015] [Indexed: 06/04/2023]
Abstract
The structural and spectroscopic studies of 3t-pentyl-2r,6c-diphenylpiperidin-4-one semicarbazone (PDPOSC) were made by adopting B3LYP/HF levels theory using 6-311++G(d,p) basis set. The FT-IR and Raman spectra were recorded in solid phase, the fundamental vibrations were assigned on the basis of the total energy distribution (TED) of the vibrational modes, calculated with scaled quantum mechanics (SQM) method and PQS program. DFT method indicates that B3LYP is superior to HF method for molecular vibrational analysis. UV-vis spectrum of the compound was recorded in different solvents in the region of 200-800 nm and the electronic properties such as excitation energies, oscillator strength, wavelengths, HOMO and LUMO energies were evaluated by time-dependent DFT (TD-DFT) approach. The polarizability and first order hyperpolarizability of the title molecule were calculated and interpreted. The hyperconjugative interaction energy (E((2))) and electron densities of donor (i) and acceptor (j) bonds were calculated using NBO analysis. In addition, MEP and atomic charges of carbon, nitrogen and oxygen were calculated using B3LYP/6-311++G(d,p) level theory. Moreover, thermodynamic properties of the title compound were calculated by B3LYP/HF, levels using 6-311++G(d,p) basis set. The (1)H and (13)C nuclear magnetic resonance (NMR) chemical shifts of the molecule were calculated by the gauge independent atomic orbital (GIAO) method and compared with experimental results.
Collapse
Affiliation(s)
- M Arockia doss
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, India
| | - S Savithiri
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, India
| | - G Rajarajan
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, India.
| | - V Thanikachalam
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, India
| | - H Saleem
- Department of Physics, Annamalai University, Annamalainagar 608 002, India
| |
Collapse
|
43
|
Karakaya M, Sert Y, Kürekçi M, Eskiyurt B, Çırak Ç. Theoretical and experimental investigations on vibrational and structural properties of tolazamide. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.04.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
44
|
Sayin E, Süheyla Kürkçüoğlu G, Yeşilel OZ, Hökelek T. Syntheses and characterizations of tetracyanoplatinate(II) complexes with 2-pyridineethanol. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1048239] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Elvan Sayin
- Graduate School of Natural and Applied Sciences, Physics, Eskişehir Osmangazi University, Eskişehir, Turkey
| | - Güneş Süheyla Kürkçüoğlu
- Faculty of Arts and Sciences, Department of Physics, Eskişehir Osmangazi University, Eskişehir, Turkey
| | - Okan Zafer Yeşilel
- Faculty of Arts and Sciences, Department of Chemistry, Eskişehir Osmangazi University, Eskişehir, Turkey
| | - Tuncer Hökelek
- Faculty of Engineering, Department of Physics, Hacettepe University, Ankara, Turkey
| |
Collapse
|
45
|
Karthikeyan N, Joseph Prince J, Ramalingam S, Periandy S. Spectroscopic [FT-IR and FT-Raman] and theoretical [UV-Visible and NMR] analysis on α-Methylstyrene by DFT calculations. Spectrochim Acta A Mol Biomol Spectrosc 2015; 143:107-119. [PMID: 25721781 DOI: 10.1016/j.saa.2015.02.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 01/07/2015] [Accepted: 02/04/2015] [Indexed: 06/04/2023]
Abstract
In the present research work, the FT-IR, FT-Raman and (13)C and (1)H NMR spectra of the α-Methylstyrene were recorded. The observed fundamental frequencies in finger print as well as functional group regions were assigned according to their uniqueness region. The Gaussian computational calculations are carried out by HF and DFT (B3LYP and B3PW91) methods with 6-31++G(d,p) and 6-311++G(d,p) basis sets and the corresponding results were tabulated. The impact of the presence of vinyl group in phenyl structure of the compound is investigated. The modified vibrational pattern of the molecule associated vinyl group was analyzed. Moreover, (13)C NMR and (1)H NMR were calculated by using the gauge independent atomic orbital (GIAO) method with B3LYP methods and the 6-311++G(d,p) basis set and their spectra were simulated and the chemical shifts linked to TMS were compared. A study on the electronic and optical properties; absorption wavelengths, excitation energy, dipole moment and frontier molecular orbital energies were carried out. The kubo gap of the present compound was calculated related to HOMO and LUMO energies which confirm the occurring of charge transformation between the base and ligand. Besides frontier molecular orbitals (FMO), molecular electrostatic potential (MEP) was performed. The NLO properties related to Polarizability and hyperpolarizability based on the finite-field approach were also discussed.
Collapse
Affiliation(s)
- N Karthikeyan
- Department of Physics, Indra Ganesan College of Engineering, Trichy, Tamil Nadu, India
| | - J Joseph Prince
- Department of Physics, Anna University, Bit Campus, Tiruchirappalli, Tamil Nadu, India
| | - S Ramalingam
- Department of Physics, A.V.C. College, Mayiladuthurai, Tamil Nadu, India.
| | - S Periandy
- Department of Physics, Tagore Arts College, Puducherry, India
| |
Collapse
|
46
|
Refat MS, Saad HA, Adam AMA. Spectral, thermal and kinetic studies of charge-transfer complexes formed between the highly effective antibiotic drug metronidazole and two types of acceptors: σ- and π-acceptors. Spectrochim Acta A Mol Biomol Spectrosc 2015; 141:202-210. [PMID: 25677533 DOI: 10.1016/j.saa.2015.01.029] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 01/08/2015] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
Understanding the interaction between drugs and small inorganic or organic molecules is critical in being able to interpret the drug-receptor interactions and acting mechanism of these drugs. A combined solution and solid state study was performed to describe the complexation chemistry of drug metronidazole (MZ) which has a broad-spectrum antibacterial activity with two types of acceptors. The acceptors include, σ-acceptor (i.e., iodine) and π-acceptors (i.e., dichlorodicyanobenzoquinone (DDQ), chloranil (CHL) and picric acid (PA)). The molecular structure, spectroscopic characteristics, the binding modes as well as the thermal stability were deduced from IR, UV-vis, (1)H NMR and thermal studies. The binding ratio of complexation (MZ: acceptor) was determined to be 1:2 for the iodine acceptor and 1:1 for the DDQ, CHL or PA acceptor, according to the CHN elemental analyses and spectrophotometric titrations. It has been found that the complexation with CHL and PA acceptors increases the values of enthalpy and entropy, while the complexation with DDQ and iodine acceptors decreases the values of these parameters compared with the free MZ donor.
Collapse
Affiliation(s)
- Moamen S Refat
- Department of Chemistry, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, Zip Code 21974 Taif, Saudi Arabia; Department of Chemistry, Faculty of Science, Port Said University, Port Said, Egypt.
| | - Hosam A Saad
- Department of Chemistry, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, Zip Code 21974 Taif, Saudi Arabia; Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Abdel Majid A Adam
- Department of Chemistry, Faculty of Science, Taif University, Al-Haweiah, P.O. Box 888, Zip Code 21974 Taif, Saudi Arabia
| |
Collapse
|
47
|
Saravanan S, Balachandran V. Conformational stability, spectroscopic (FT-IR, FT-Raman and UV-Vis) analysis, NLO, NBO, FMO and Fukui function analysis of 4-hexylacetophenone by density functional theory. Spectrochim Acta A Mol Biomol Spectrosc 2015; 138:406-423. [PMID: 25528503 DOI: 10.1016/j.saa.2014.11.091] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Accepted: 11/24/2014] [Indexed: 06/04/2023]
Abstract
The experimental and theoretical study on the structures and vibrations of 4-hexylacetophenone (abbreviated as 4HAP) are presented. The FT-IR and FT-Raman spectra of the title compound have been recorded in the region 4000-400cm(-1) and 3500-100cm(-1) respectively. The molecular structures, vibrational wavenumbers, infrared intensities and Raman activities were calculated using DFT (B3LYP and LSDA) method with 6-311++G(d,p) basis set. The most stable conformer of 4HAP is identified from the computational results. The assignments of the vibrational spectra have been carried out with the aid of normal coordinate analysis (NCA) following the scaled quantum mechanical force field methodology (SQMEF). The linear polarizability (α) and the first hyperpolarizability (βtot) values of the investigated molecule have been computed using B3LYP and LSDA with 6-311++G(d,p) basis set. Stability of the molecule arising from hyper conjugative interaction and charge transfer delocalization has been analyzed using natural bond orbital (NBO) analysis. The molecule orbital contributions are studied by density of energy states (DOSs). UV-Vis spectrum and effects of solvents have been discussed effects of solvents have been discussed and the electronic properties such as HOMO and LUMO energies were determined by time-dependent TD-DFT approach. Fukui function and Mulliken analysis on atomic charges of the title compound have been calculated. Finally, electrophilic and nucleophilic descriptors of the title molecule have been calculated.
Collapse
Affiliation(s)
- S Saravanan
- Department of Physics, Karpagam University, Coimbatore 641 021, India; Department of Physics, J.J. College of Arts and Science (Autonomous), Pudukkottai 622 422, India
| | - V Balachandran
- Centre for Research, Department of Physics, AA Government Arts College, Musiri, Tiruchirappalli 621 211, India.
| |
Collapse
|
48
|
Soayed AA, Refaat HM, Sinha L. Syntheses, structural elucidation, thermal properties, theoretical quantum chemical studies (DFT) and biological studies of barbituric–hydrazone complexes. Journal of Saudi Chemical Society 2015. [DOI: 10.1016/j.jscs.2014.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
49
|
Arivazhagan M, Senthil kumar J. Molecular structure, vibrational spectral assignments, HOMO-LUMO, MESP, Mulliken analysis and thermodynamic properties of 2,6-xylenol and 2,5-dimethyl cyclohexanol based on DFT calculation. Spectrochim Acta A Mol Biomol Spectrosc 2015; 137:490-502. [PMID: 25240827 DOI: 10.1016/j.saa.2014.08.054] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 08/21/2014] [Accepted: 08/23/2014] [Indexed: 06/03/2023]
Abstract
The FT-IR and FT-Raman spectra of 2,6-xylenol and 2,5-dimethyl cyclohexanol are recorded in the region 4000-400 cm(-1) and 3500-50 cm(-1) respectively. The spectral data obtained are assigned to different normal modes by using of comparison with the theoretical values obtained by applying density functional theory (DFT/B3LYP) method with 6-31+G and 6-31++G basis set. The total energy distribution contributions of vibrations modes are distinguished through scaling factors. The calculated HOMO and LUMO energies shows that the charge transfers occur within the molecules. The harmonic frequencies obtained from these two methods are compared. The Mulliken, molecular electrostatic potentials analysis are calculated theoretically.
Collapse
Affiliation(s)
- M Arivazhagan
- Department of Physics, Government Arts College, Tiruchirappalli 620022, India.
| | - J Senthil kumar
- PG & Research Department of Physics, Periyar EVR College, Tiruchirappalli 620023, India
| |
Collapse
|
50
|
Uma Maheswari J, Muthu S, Sundius T. QM/MM methodology, docking and spectroscopic (FT-IR/FT-Raman, NMR, UV) and Fukui function analysis on adrenergic agonist. Spectrochim Acta A Mol Biomol Spectrosc 2015; 137:841-855. [PMID: 25277632 DOI: 10.1016/j.saa.2014.07.095] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/09/2014] [Accepted: 07/29/2014] [Indexed: 06/03/2023]
Abstract
The Fourier transform infrared, FT-Raman, UV and NMR spectra of Ternelin have been recorded and analyzed. Harmonic vibrational frequencies have been investigated with the help of HF with 6-31G (d,p) and B3LYP with 6-31G (d,p) and LANL2DZ basis sets. The (1)H and (13)C nuclear magnetic resonance (NMR) chemical shifts of the molecule were calculated by GIAO method. The polarizability (α) and the first hyperpolarizability (β) values of the investigated molecule have been computed using DFT quantum mechanical calculations. Stability of the molecule arising from hyper conjugative interactions, and charge delocalization has been analyzed using natural bond orbital (NBO) analysis. The electron density-based local reactivity descriptors such as Fukui functions were calculated to explain the chemical selectivity or reactivity site in Ternelin. Finally the calculated results were compared to simulated infrared and Raman spectra of the title compound which show good agreement with observed spectra. Molecular docking studies have been carried out in the active site of Ternelin and reactivity with ONIOM was also investigated.
Collapse
Affiliation(s)
- J Uma Maheswari
- Department of Physics, Sree Sastha Institute of Engg and Technology, Chembarabakkam, Chennai, Tamil Nadu, India.
| | - S Muthu
- Department of Physics, Sri Venkateswara College of Engineering, Pennalur, Tamil Nadu, India
| | - Tom Sundius
- Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki, Finland
| |
Collapse
|