1
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Dohmen R, Fedosov D, Obenchain DA. Benchmarking the quadrupolar coupling tensor for chlorine to probe weak-bonding interactions. Phys Chem Chem Phys 2023; 25:2420-2429. [PMID: 36598167 DOI: 10.1039/d2cp04067k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Rotational spectroscopy relies on quantum chemical calculations to interpret observed spectra. Among the most challenging molecules to assign are those with additional angular momenta coupling to the rotation, contributing to the complexity of the spectrum. This benchmark study of computational methods commonly used by rotational spectroscopists targets the nuclear quadrupole coupling constants of chlorine containing molecules and the geometry of its complexes and clusters. For each method, the quality of both structural and electronic parameter predictions is compared with the experimental values. Ab initio methods are found to perform best overall in predicting both the geometry of the complexes and the coupling constants of chlorine with moderate computational cost. This cost can be reduced by combining these methods with density functional theory structure optimization, which still yields adequate predictions. This work constitutes a first step in expanding Bailey's quadrupole coupling data set to encompass molecular clusters. [W. C. Bailey, Calculation of Nuclear Quadrupole Coupling Constants in Gaseous State Molecule, 2019, https://nqcc.wcbailey.net/].
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Affiliation(s)
- Robin Dohmen
- Georg-August University, Tammannstraße 6, Göttingen, Germany.
| | - Denis Fedosov
- Georg-August University, Tammannstraße 6, Göttingen, Germany.
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2
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Zheng Y, Herbers S, Gou Q, Caminati W, Grabow JU. Chlorine "Equatorial Belt" Activation of CF 3Cl by CO 2: The C···Cl Tetrel Bond Dominance in CF 3Cl-CO 2. J Phys Chem Lett 2021; 12:3907-3913. [PMID: 33861087 DOI: 10.1021/acs.jpclett.1c00837] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Besides its typical halogen donor behavior (exhibiting a Cl σ-hole) in forming Cl···B halogen bonds (B is an electron-rich region), CF3Cl reveals a new interaction site in its complex with CO2 when explored by rotational spectroscopy. Experimental evidence and theoretical analyses point out irrefutably that CF3Cl prefers to link to CO2 through its Cl "equatorial belt" consisting of the lone pairs of the Cl atom, resulting in a C···Cl tetrel bond. In addition, a secondary plausible C···O tetrel bond and a F···O halogen bond might contribute to the relative orientation of the moieties forming the complex. The effects of the Cl "equatorial belt" present in perhalogenated molecules, such as CF3Cl, have been hitherto overlooked in describing the origin of noncovalent interactions. That left a significant void that the present study tries to fill by outlining its importance.
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Affiliation(s)
- Yang Zheng
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, No. 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Sven Herbers
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, No. 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Qian Gou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, No. 55 Daxuecheng South Road, Shapingba, Chongqing, 401331, China
| | - Walther Caminati
- Dipartimento di Chimica "G. Ciamician", Università di Bologna Via Selmi 2, I-40126 Bologna, Italy
| | - Jens-Uwe Grabow
- Institut für Physikalische Chemie & Elektrochemie Leibniz, Universität Hannover Callinstraβe 3A, 30167 Hannover, Germany
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3
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Wang H, Wang J, Chen J, Herbers S, Zheng H, Gou Q. Competitive and cooperative n →π* and n →σ* interactions in benzaldehyde-formaldehyde: rotational characterization. Phys Chem Chem Phys 2021; 23:8778-8783. [PMID: 33876036 DOI: 10.1039/d0cp06409b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The rotational spectrum of the 1 : 1 benzaldehyde-formaldehyde complex has been investigated by pulsed jet Fourier transform microwave spectroscopy combined with ab initio calculations. The two most stable isomers were observed, with the relative abundance ratio NI/NII≈ 3/1 estimated with intensity measurements. Both observed isomers are stabilized by one dominating O[double bond, length as m-dash]CO tetrel bond (n →π* interaction) and one secondary C-HO hydrogen bond. Natural bond orbital analysis and electron localization function analysis were applied to characterize the nature of the noncovalent interactions in the target complex.
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Affiliation(s)
- Hao Wang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331, Chongqing, China.
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4
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Gao S, Wang J, Li M, Kleiner I, Feng G, Gou Q. Microwave spectra and structures of 2-fluoro-4-picoline. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Császár AG, Fábri C, Sarka J. Quasistructural molecules. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2019. [DOI: 10.1002/wcms.1432] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Attila G. Császár
- Laboratory of Molecular Structure and Dynamics, Institute of Chemistry ELTE Eötvös Loránd University Budapest Hungary
- MTA‐ELTE Complex Chemical Systems Research Group Budapest Hungary
| | - Csaba Fábri
- Laboratory of Molecular Structure and Dynamics, Institute of Chemistry ELTE Eötvös Loránd University Budapest Hungary
- MTA‐ELTE Complex Chemical Systems Research Group Budapest Hungary
| | - János Sarka
- Department of Chemistry and Biochemistry Texas Tech University Lubbock Texas USA
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6
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Juanes M, Saragi RT, Caminati W, Lesarri A. The Hydrogen Bond and Beyond: Perspectives for Rotational Investigations of Non‐Covalent Interactions. Chemistry 2019; 25:11402-11411. [DOI: 10.1002/chem.201901113] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 04/15/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Marcos Juanes
- Departamento de Química Física y Química Inorgánica—IU CINQUIMAFacultad de CienciasUniversidad de Valladolid 47011 Valladolid Spain
| | - Rizalina T. Saragi
- Departamento de Química Física y Química Inorgánica—IU CINQUIMAFacultad de CienciasUniversidad de Valladolid 47011 Valladolid Spain
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician”Università di Bologna Via Selmi 2 40126 Bologna Italy
| | - Alberto Lesarri
- Departamento de Química Física y Química Inorgánica—IU CINQUIMAFacultad de CienciasUniversidad de Valladolid 47011 Valladolid Spain
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7
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Calabrese C, Li W, Prampolini G, Evangelisti L, Uriarte I, Cacelli I, Melandri S, Cocinero EJ. A General Treatment to Study Molecular Complexes Stabilized by Hydrogen‐, Halogen‐, and Carbon‐Bond Networks: Experiment and Theory of (CH
2
F
2
)
n
⋅⋅⋅(H
2
O)
m. Angew Chem Int Ed Engl 2019; 58:8437-8442. [DOI: 10.1002/anie.201902753] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/05/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Camilla Calabrese
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
| | - Weixing Li
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
| | - Giacomo Prampolini
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricerca via G. Moruzzi 1 I-56124 Pisa Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
- Department of ChemistryUniversity of Virginia McCormick Road VA 22903 Charlottesville USA
| | - Iciar Uriarte
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
| | - Ivo Cacelli
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricerca via G. Moruzzi 1 I-56124 Pisa Italy
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa via Risorgimento 35 I-56126 Pisa Italy
| | - Sonia Melandri
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
| | - Emilio J. Cocinero
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
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8
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Calabrese C, Li W, Prampolini G, Evangelisti L, Uriarte I, Cacelli I, Melandri S, Cocinero EJ. A General Treatment to Study Molecular Complexes Stabilized by Hydrogen‐, Halogen‐, and Carbon‐Bond Networks: Experiment and Theory of (CH
2
F
2
)
n
⋅⋅⋅(H
2
O)
m
. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Camilla Calabrese
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
| | - Weixing Li
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
| | - Giacomo Prampolini
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricerca via G. Moruzzi 1 I-56124 Pisa Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
- Department of ChemistryUniversity of Virginia McCormick Road VA 22903 Charlottesville USA
| | - Iciar Uriarte
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
| | - Ivo Cacelli
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR)Area della Ricerca via G. Moruzzi 1 I-56124 Pisa Italy
- Dipartimento di Chimica e Chimica IndustrialeUniversità di Pisa via Risorgimento 35 I-56126 Pisa Italy
| | - Sonia Melandri
- Dipartimento di Chimica “Giacomo Ciamician”Università degli Studi di Bologna via Selmi 2 I-40126 Bologna Italy
| | - Emilio J. Cocinero
- Departament of Physical ChemistryUniversity of the Basque Country (UPV/EHU) Barrio Sarriena, S/N 48940 Leioa Spain
- Biofisika Institute, (CSIC, UPV/EHU) 48080 Bilbao Spain
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9
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Favero LB, Maris A, Melandri S, Ottaviani P, Caminati W. Non covalent interactions stabilizing the chiral dimer of CH 2ClF: a rotational study. Phys Chem Chem Phys 2019; 21:3695-3700. [PMID: 30652707 DOI: 10.1039/c8cp06288a] [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
We report the rotational spectra of three isotopologues of the dimer of chlorofluoromethane, namely CH235ClF-CH235ClF, CH235ClF-CH237ClF and CH237ClF-CH235ClF. The assigned (most stable) conformer is chiral (C1 symmetry) and displays a network of two C-HCl-C and one C-HF-C weak hydrogen bonds, combined with a ClF halogen bond. The hyperfine structures due to the quadrupolar effects of the two non-equivalent 35Cl (or 37Cl) atoms have been fully resolved, leading to an accurate determination of two sets of diagonal and of some mixed quadrupole coupling constants. Information on the rs positions of the two Cl atoms and on the structural parameters of the hydrogen bonds has been obtained. The dissociation energy of the complex has been estimated as 5.9 kJ mol-1.
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Affiliation(s)
- Laura B Favero
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), Sezione di Bologna CNR, via Gobetti 101, I-40129 Bologna, Italy
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10
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Chen J, Wang J, Zheng Y, Feng G, Gou Q. Halogen bond in the water adduct of chloropentafluoroethane revealed by rotational spectroscopy. J Chem Phys 2018; 149:154307. [PMID: 30342446 DOI: 10.1063/1.5052132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The rotational spectrum of the chloropentafluoroethane-water complex has been investigated by pulsed jet Fourier transform microwave spectroscopy. Experimental rotational and quadrupole coupling constants of five isotopologues imply that the two subunits are held together by an almost linear C-Cl⋯O halogen bond. Water lies effectively in the symmetric plane of C2F5Cl and undergoes a plausible free internal rotation. The experimental structure and dissociation energies of the complex are also deduced.
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Affiliation(s)
- Junhua Chen
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Juan Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Yang Zheng
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Gang Feng
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Qian Gou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
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11
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De Santis M, Nunzi F, Cesario D, Belpassi L, Tarantelli F, Cappelletti D, Pirani F. Cooperative role of halogen and hydrogen bonding in the stabilization of water adducts with apolar molecules. NEW J CHEM 2018. [DOI: 10.1039/c8nj00552d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conversely to the H2O–CF4 adduct, an appreciable intermolecular bond stabilization by charge transfer is operative in the H2O–CCl4 system.
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Affiliation(s)
- Matteo De Santis
- Dipartimento di Chimica
- Biologia e Biotecnologie
- I-06123 Perugia
- Italy
| | - Francesca Nunzi
- Istituto di Scienze e Tecnologie Molecolari del CNR (ISTM-CNR)
- I-06123 Perugia
- Italy
- Dipartimento di Chimica
- Biologia e Biotecnologie
| | - Diego Cesario
- Dipartimento di Chimica
- Biologia e Biotecnologie
- I-06123 Perugia
- Italy
| | - Leonardo Belpassi
- Istituto di Scienze e Tecnologie Molecolari del CNR (ISTM-CNR)
- I-06123 Perugia
- Italy
- Consortium for Computational Molecular and Materials Sciences (CMS)2
- I-06123 Perugia
| | - Francesco Tarantelli
- Istituto di Scienze e Tecnologie Molecolari del CNR (ISTM-CNR)
- I-06123 Perugia
- Italy
- Dipartimento di Chimica
- Biologia e Biotecnologie
| | | | - Fernando Pirani
- Dipartimento di Chimica
- Biologia e Biotecnologie
- I-06123 Perugia
- Italy
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12
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de Oliveira RM, Roncaratti LF, de Macedo LGM, Gargano R. The interaction of CCl 4 with Ng (Ng = He, Ne, Ar), O 2, D 2O and ND 3: rovibrational energies, spectroscopic constants and theoretical calculations. J Mol Model 2017; 23:87. [PMID: 28224331 DOI: 10.1007/s00894-017-3269-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 01/30/2017] [Indexed: 10/20/2022]
Abstract
This investigation generated rovibrational energies and spectroscopic constants for systems of CCl4 with Ng (Ng = He, Ne, Ar), O2, D2O and ND3 from scattering experimental data, and the results presented are of interest for microwave spectroscopy studies of small halogenated molecules. The rovibrational spectra were obtained through two different approaches (Dunham and DVR) within the improved Lennard Jones (ILJ) model. Spectra were also generated within ordinary Lennard Jones and deviations suggest that the ILJ model should be preferred due to interactions beyond dispersion forces presented in these systems. Data from the literature and additional high level quantum mechanical calculations presented in this work show that these systems should not be considered as van der Waals complexes due to halogen bonding (HB) interactions, and this is especially true for the CCl4-D2O and CCl4-ND3 complexes. The charge displacement from the latter systems are one order of magnitude higher than the values from literature for CCl4 and He, Ne, Ar and O2 systems, and show significant deviations between DFT and Hartree-Fock values not previously reported in the literature.
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Affiliation(s)
- Rhuiago M de Oliveira
- Instituto de Física, Universidade de Brasília (UnB), PO Box 04455, Brasília, DF, 70919-970, Brazil
| | - Luiz F Roncaratti
- Instituto de Física, Universidade de Brasília (UnB), PO Box 04455, Brasília, DF, 70919-970, Brazil
| | - Luiz Guilherme M de Macedo
- Faculdade de Biotecnologia, Instituto de Ciências Biológicas, Universidade Federal do Pará (UFPA), Belém, PA, 66075-110, Brazil.
| | - Ricardo Gargano
- Instituto de Física, Universidade de Brasília (UnB), PO Box 04455, Brasília, DF, 70919-970, Brazil
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13
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Zha B, Dong M, Miao X, Miao K, Hu Y, Wu Y, Xu L, Deng W. Controllable Orientation of Ester-Group-Induced Intermolecular Halogen Bonding in a 2D Self-Assembly. J Phys Chem Lett 2016; 7:3164-3170. [PMID: 27482936 DOI: 10.1021/acs.jpclett.6b01508] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Halogen bonding with high specificity and directionality in the geometry has proven to be an important type of noncovalent interaction to fabricate and control 2D molecular architectures on surfaces. Herein, we first report how the orientation of the ester substituent for thienophenanthrene derivatives (5,10-DBTD and 5,10-DITD) affects positive charge distribution of halogens by density functional theory, thus determining the formation of an intermolecular halogen bond and different self-assembled patterns by scanning tunneling microscopy. The system presented here mainly includes heterohalogen X···O═C and X···S halogen bonds, H···Br and H···O hydrogen bonds, and I···I interaction, where the directionality and strength of such weak bonds determine the molecular arrangement by varying the halogen substituent. This study provides a detailed understanding of the role of ester orientation, concentration, and solvent effects on the formation of halogen bonds and proves relevant for identification of multiple halogen bonding in supramolecular chemistry.
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Affiliation(s)
- Bao Zha
- College of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | - Meiqiu Dong
- College of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | - Xinrui Miao
- College of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | - Kai Miao
- College of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | - Yi Hu
- College of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | - Yican Wu
- College of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | - Li Xu
- College of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
| | - Wenli Deng
- College of Materials Science and Engineering, South China University of Technology , Guangzhou 510640, China
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14
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Becucci M, Melandri S. High-Resolution Spectroscopic Studies of Complexes Formed by Medium-Size Organic Molecules. Chem Rev 2016; 116:5014-37. [DOI: 10.1021/acs.chemrev.5b00512] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maurizio Becucci
- Department
of Chemistry “Ugo Schiff” and European Laboratory for
Nonlinear Spectroscopy, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Sonia Melandri
- Department
of Chemistry “Giacomo Ciamician”, University of Bologna, Via Francesco Selmi 2, 40126 Bologna, Italy
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15
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Xiao Z, Yang X, Zhao S, Wang D, Yang Y, Wang L. Metal–organic hybrid materials built with tetrachlorophthalate acid and different N-donor coligands: Structure diversity and photoluminescence. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2015.11.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Caminati W, Evangelisti L, Feng G, Giuliano BM, Gou Q, Melandri S, Grabow JU. On the Cl⋯C halogen bond: a rotational study of CF3Cl–CO. Phys Chem Chem Phys 2016; 18:17851-5. [DOI: 10.1039/c6cp01059h] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A Cl⋯C halogen bond links CF3Cl to CO in their symmetric top 1 : 1 adduct.
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Affiliation(s)
- Walther Caminati
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Luca Evangelisti
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Gang Feng
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Barbara M. Giuliano
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
- Max-Planck-Institut für extraterrestrische Physik
- 85748 Garching
| | - Qian Gou
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Sonia Melandri
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Jens-Uwe Grabow
- Institut für Physikalische Chemie und Elektrochemie
- Lehrgebiet A
- Gottfried-Wilhelm-Leibniz-Universität Callinstrasse 3A
- D-30167 Hannover
- Germany
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17
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Gou Q, Spada L, Lòpez JC, Grabow JU, Caminati W. Chloromethane-water adduct: rotational spectrum, weak hydrogen bonds, and internal dynamics. Chem Asian J 2015; 10:1198-203. [PMID: 25677836 DOI: 10.1002/asia.201500013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 02/02/2015] [Indexed: 11/11/2022]
Abstract
The rotational spectra of four isotopologues of the 1:1 complex between chloromethane and water revealed the presence of only one rotamer in a pulsed jet expansion. The two subunits are linked through two weak hydrogen bonds, O-H⋅⋅⋅Cl (R(H⋅⋅⋅Cl) =2.638(2) Å) and C-H⋅⋅⋅O (R(H⋅⋅⋅O) =2.501(2) Å), forming a five-membered ring. All transitions display the hyperfine structure due to the (35)Cl (or (37)Cl) nuclear quadrupole effects. Dynamical features in the spectrum are caused by two large-amplitude motions. Each component line appears as an asymmetric doublet with a relative intensity ratio of 1:3. The splittings led to the determination of barrier to internal rotation of water around its symmetry axis, V(2) =320(10) cm(-1). Finally, an unexpected small value of the inertial defect (-0.96 uÅ(2) rather than -3.22 uÅ(2)) allowed the estimation of the barrier to the internal rotation of the CH(3) group, V(3) ≈8 cm(-1).
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Affiliation(s)
- Qian Gou
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna (Italy), Fax: (+39) 0512099456
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18
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Gou Q, Feng G, Evangelisti L, Vallejo-López M, Spada L, Lesarri A, Cocinero EJ, Caminati W. Internal Dynamics in Halogen-Bonded Adducts: A Rotational Study of Chlorotrifluoromethane-Formaldehyde. Chemistry 2015; 21:4148-52. [DOI: 10.1002/chem.201406122] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Indexed: 11/07/2022]
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Gou Q, Spada L, Geboes Y, Herrebout WA, Melandri S, Caminati W. N lone-pair⋯π interaction: a rotational study of chlorotrifluoroethylene⋯ammonia. Phys Chem Chem Phys 2015; 17:7694-8. [DOI: 10.1039/c4cp05167j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
NH3 forms an adduct with C2F3Cl through a (N)lone pair⋯π interaction.
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Affiliation(s)
- Qian Gou
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Lorenzo Spada
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Yannick Geboes
- Department of Chemistry
- University of Antwerp
- 2020 Antwerp
- Belgium
| | | | - Sonia Melandri
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
| | - Walther Caminati
- Dipartimento di Chimica “G. Ciamician” dell'Università
- I-40126 Bologna
- Italy
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