1
|
Palumbo O, Paolone A, Campetella M, Ramondo F, Cappelluti F, Gontrani L. New insights into chloromethyl-oxirane and chloromethyl-thiirane in liquid and solid phase from low-temperature infrared spectroscopy and ab initio modeling. Spectrochim Acta A Mol Biomol Spectrosc 2021; 247:119061. [PMID: 33091738 DOI: 10.1016/j.saa.2020.119061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 10/02/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
A detailed study of the conformational landscape of chloromethyl-oxirane and chloromethyl-thiirane is here reported. The equilibrium of the three different conformers of the two molecules was assessed, using a joint approach of experimental and theoretical methods. High quality infrared spectroscopy measurements of the liquid and of the crystalline phases were interpreted with the aid of ab initio Molecular Dynamics (AIMD) simulations, anharmonic frequencies and free energy calculations, obtaining a very good reproduction of the experimental data. The modulation of the conformational equilibrium upon the addition of polar and non-polar solvents was computationally evaluated and results found a confirmation in experimental measures.
Collapse
Affiliation(s)
- O Palumbo
- CNR-ISC, UOS La Sapienza, P. le A. Moro 5, 00185 Roma, Italy
| | - A Paolone
- CNR-ISC, UOS La Sapienza, P. le A. Moro 5, 00185 Roma, Italy
| | - M Campetella
- Dipartimento di Chimica, Università degli Studi di Roma, P. le Aldo Moro 5, 00185 Roma, Italy
| | - F Ramondo
- Dipartimento di Chimica, Università degli Studi di Roma, P. le Aldo Moro 5, 00185 Roma, Italy
| | - F Cappelluti
- Dipartimento di Ingegneria e Scienza dell'Informazione e Matematica, Università dell'Aquila, Via Vetoio 5, Coppito, 67100 L'Aquila, Italy.
| | - L Gontrani
- Dipartimento di Chimica, Università degli Studi di Roma, P. le Aldo Moro 5, 00185 Roma, Italy; Dipartimento di Ingegneria Industriale, Università di Roma "Tor Vergata", Viale degli ingegneri, I-00133 Roma, Italy.
| |
Collapse
|
2
|
Campetella M, Cappelluti F, Fasolato C, Conte D, Palumbo O, Paolone A, Carbone M, Postorino P, Gontrani L. Physical-chemical studies on putrescine (butane-1,4-diamine) and its solutions: Experimental and computational investigations. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114568] [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: 10/23/2022]
|
3
|
|
4
|
Lo Celso F, Appetecchi GB, Jafta CJ, Gontrani L, Canongia Lopes JN, Triolo A, Russina O. Nanoscale organization in the fluorinated room temperature ionic liquid: Tetraethyl ammonium (trifluoromethanesulfonyl)(nonafluorobutylsulfonyl)imide. J Chem Phys 2018; 148:193816. [DOI: 10.1063/1.5016236] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- F. Lo Celso
- Dipartimento di Fisica e Chimica, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
- Laboratorio Liquidi Ionici, Istituto Struttura della Materia, Consiglio Nazionale delle Ricerche, (ISM-CNR) Rome, Rome, Italy
| | | | - C. J. Jafta
- Soft Matter and Functional Materials, Helmholtz-Zentrum für Materialien und Energie GmbH, Berlin, Germany
| | - L. Gontrani
- Department of Chemistry, University of Rome Sapienza, Rome, Italy
| | - J. N. Canongia Lopes
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - A. Triolo
- Laboratorio Liquidi Ionici, Istituto Struttura della Materia, Consiglio Nazionale delle Ricerche, (ISM-CNR) Rome, Rome, Italy
| | - O. Russina
- Department of Chemistry, University of Rome Sapienza, Rome, Italy
| |
Collapse
|
5
|
Affiliation(s)
- M. Campetella
- Dipartimento di Chimica, Sapienza Università di Roma, Piazzale Aldo Moro, Rome, Italy
| | - M. Macchiagodena
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstraße, Bonn,Germany
| | - L. Gontrani
- Dipartimento di Chimica, Sapienza Università di Roma, Piazzale Aldo Moro, Rome, Italy
| | - B. Kirchner
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstraße, Bonn,Germany
| |
Collapse
|
6
|
Mariani A, Caminiti R, Gontrani L. Water and hexane in an ionic liquid: computational evidence of association under high pressure. Phys Chem Chem Phys 2017; 19:8661-8666. [DOI: 10.1039/c6cp08450h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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
Dissolving water and hexane in an ionic liquid, our simulations clearly show association between them at high pressures.
Collapse
Affiliation(s)
- A. Mariani
- Department of Chemistry
- “La Sapienza” University of Rome
- 00185 Rome
- Italy
| | - R. Caminiti
- Department of Chemistry
- “La Sapienza” University of Rome
- 00185 Rome
- Italy
- Centro di Ricerca per le Nanotecnologie Applicate all’Ingegneria
| | - L. Gontrani
- Department of Chemistry
- “La Sapienza” University of Rome
- 00185 Rome
- Italy
| |
Collapse
|
7
|
Campetella M, Bovi D, Caminiti R, Guidoni L, Bencivenni L, Gontrani L. Structural and vibrational study of 2-MethoxyEthylAmmonium Nitrate (2-OMeEAN): Interpretation of experimental results with ab initio molecular dynamics. J Chem Phys 2016; 145:024507. [DOI: 10.1063/1.4956459] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M. Campetella
- Dipartimento di Chimica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| | - D. Bovi
- Dipartimento di Fisica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| | - R. Caminiti
- Dipartimento di Chimica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| | - L. Guidoni
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, Via Vetoio, Coppito, I-67100 L’Aquila, Italy
| | - L. Bencivenni
- Dipartimento di Chimica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| | - L. Gontrani
- Dipartimento di Chimica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| |
Collapse
|
8
|
Campetella M, Bencivenni L, Caminiti R, Zazza C, Di Trapani S, Martino A, Gontrani L. Chloromethyl-oxirane and chloromethyl-thiirane in liquid phase: A joint experimental and quantum chemical study. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.03.027] [Citation(s) in RCA: 7] [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: 01/08/2023]
|
9
|
Mariani A, Caminiti R, Campetella M, Gontrani L. Pressure-induced mesoscopic disorder in protic ionic liquids: first computational study. Phys Chem Chem Phys 2016; 18:2297-302. [DOI: 10.1039/c5cp06800b] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [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 application of high pressure to protic ionic liquids with short alkyl chains induces a progressive homogenization of the structure.
Collapse
Affiliation(s)
- A. Mariani
- Department of Chemistry
- “La Sapienza” University of Rome
- Italy
| | - R. Caminiti
- Department of Chemistry
- “La Sapienza” University of Rome
- Italy
| | - M. Campetella
- Department of Chemistry
- “La Sapienza” University of Rome
- Italy
| | - L. Gontrani
- Department of Chemistry
- “La Sapienza” University of Rome
- Italy
| |
Collapse
|
10
|
Campetella M, Bodo E, Caminiti R, Martino A, D’Apuzzo F, Lupi S, Gontrani L. Interaction and dynamics of ionic liquids based on choline and amino acid anions. J Chem Phys 2015; 142:234502. [DOI: 10.1063/1.4922442] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- M. Campetella
- Department of Chemistry, University of Rome “La Sapienza,” Rome, Italy
| | - E. Bodo
- Department of Chemistry, University of Rome “La Sapienza,” Rome, Italy
| | - R. Caminiti
- Department of Chemistry, University of Rome “La Sapienza,” Rome, Italy
| | - A. Martino
- Department of Chemistry, University of Rome “La Sapienza,” Rome, Italy
| | - F. D’Apuzzo
- Department of Physics, University of Rome “La Sapienza,” Rome, Italy
| | - S. Lupi
- Department of Physics, University of Rome “La Sapienza,” Rome, Italy
| | - L. Gontrani
- Department of Chemistry, University of Rome “La Sapienza,” Rome, Italy
| |
Collapse
|
11
|
Usula M, Mocci F, Marincola FC, Porcedda S, Gontrani L, Caminiti R. The structural organization of N-methyl-2-pyrrolidone + water mixtures: A densitometry, x-ray diffraction, and molecular dynamics study. J Chem Phys 2014; 140:124503. [DOI: 10.1063/1.4869235] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
12
|
Benedetto A, Bodo E, Gontrani L, Ballone P, Caminiti R. Amino acid anions in organic ionic compounds. An ab initio study of selected ion pairs. J Phys Chem B 2014; 118:2471-86. [PMID: 24494698 DOI: 10.1021/jp412281n] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The combination of amino acids in their deprotonated and thus anionic form with a choline cation gives origin to a new and potentially important class of organic ionic compounds. A series of such neutral ion pairs has been investigated by first principle methods. The results reveal intriguing structural motives as well as regular patterns in the charge distribution and predict a number of vibrational and optical properties that could guide the experimental investigation of these compounds. The replacement of choline with its phosphocholine analogue causes the spontaneous reciprocal neutralization of cations and anions, taking place through the transfer of a proton between the two ions. Systems of this kind, therefore, provide a wide and easily accessible playground to probe the ionic/polar transition in organic systems, while the easy transfer of H(+) among neutral and ionic species points to their potential application as proton conductors. The analysis of the ab initio data highlights similarities as well as discrepancies from the rigid-ions force-field picture and suggests directions for the improvement of empirical models.
Collapse
Affiliation(s)
- A Benedetto
- School of Physics, University College Dublin , Dublin 4, Ireland
| | | | | | | | | |
Collapse
|
13
|
Gontrani L, Cesaro SN, Stranges S, Bencivenni L, Pieretti A. FTIR spectra and density functional theory P.E.D. assignments of oxiranes in Ar matrix at 12 K. Spectrochim Acta A Mol Biomol Spectrosc 2013; 120:558-567. [PMID: 24374483 DOI: 10.1016/j.saa.2013.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 07/25/2013] [Revised: 12/03/2013] [Accepted: 12/04/2013] [Indexed: 06/03/2023]
Abstract
The FTIR spectra of a series of oxiranes were studied in Ar matrix at 12K. The interpretation of the spectra was accomplished on the basis of density functional theory calculations employing the 6-311++G(3df,3pd) basis set with the B3LYP functional. Potential energy distribution was carried out for each molecule employing the B3LYP/6-311++G(3df,3pd) force field and a non-redundant definition of internal coordinates. The study of the FTIR spectra led to the reassignment of some vibrational modes of the molecules. The FTIR spectrum of trifluoroepoxypropane measured in Ar matrix and its assignment is reported for the first time.
Collapse
Affiliation(s)
- L Gontrani
- CNR-ISM, Istituto di Struttura della Materia, Via del Fosso del Cavaliere 100, 00133 Roma, Italy.
| | - S Nunziante Cesaro
- Dipartimento di Chimica, Università di Roma La Sapienza, P.le A. Moro 5, 00185 Roma, Italy
| | - S Stranges
- Dipartimento di Chimica e Tecnologie del Farmaco, Università Sapienza, P.le A. Moro 5, 00185 Roma, Italy; IOM-CNR, TASC Laboratory, Basovizza, Trieste, Italy
| | - L Bencivenni
- Dipartimento di Chimica, Università di Roma La Sapienza, P.le A. Moro 5, 00185 Roma, Italy
| | - A Pieretti
- CASPUR, Via dei Tizii 6, 00185 Roma, Italy
| |
Collapse
|
14
|
Gontrani L, Mennucci B, Tomasi J. Glycine and alanine: a theoretical study of solvent effects upon energetics and molecular response properties. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0166-1280(00)00390-0] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|