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NMR Properties of the Cyanide Anion, a Quasisymmetric Two-Faced Hydrogen Bonding Acceptor. Symmetry (Basel) 2021. [DOI: 10.3390/sym13071298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The isotopically enriched cyanide anion, (13C≡15N)−, has a great potential as the NMR probe of non-covalent interactions. However, hydrogen cyanide is highly toxic and can decompose explosively. It is therefore desirable to be able to theoretically estimate any valuable results of certain experiments in advance in order to carry out experimental studies only for the most suitable molecular systems. We report the effect of hydrogen bonding on NMR properties of 15N≡13CH···X and 13C≡15NH···X hydrogen bonding complexes in solution, where X = 19F, 15N, and O=31P, calculated at the ωB97XD/def2tzvp and the polarizable continuum model (PCM) approximations. In many cases, the isotropic 13C and 15N chemical shieldings of the cyanide anion are not the most informative NMR properties of such complexes. Instead, the anisotropy of these chemical shieldings and the values of scalar coupling constants, including those across hydrogen bonds, can be used to characterize the geometry of such complexes in solids and solutions. 1J(15N13C) strongly correlates with the length of the N≡C bond.
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Hoobler PR, Turney JM, Agarwal J, Schaefer HF. Fundamental Vibrational Analyses of the HCN Monomer, Dimer and Associated Isotopologues. Chemphyschem 2018; 19:3257-3265. [PMID: 30270472 DOI: 10.1002/cphc.201800728] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Indexed: 11/06/2022]
Abstract
In this work we provide high level ab initio treatments of the structures, vibrational frequencies, and electronic energies of the HCN monomer and dimer systems along with several isotopologues. The plethora of information related to this system within the literature is summarized and serves as a basis for comparison with the results of this paper. The geometry of the dimer and monomer are reported at the all electroncoupled-cluster singles, doubles, and perturbative triples level of theory [AE-CCSD(T)] with the correlation consistent quadruple-zeta quality basis sets with extra core functions (cc-pCVQZ) from Dunning. The theoretical geometries and electronic structures are further analyzed through the use of the Natural Bond Orbital (NBO) method and Natural Resonance Theory (NRT). At the AE-CCSD(T)/cc-pCVQZ level of theory, the full cubic with semi-diagonal quartic force field for nine dimer and four monomer isotopologues (the parent isotopologue along with 15 N, 13 C, and D derivatives) were obtained to treat the anharmonicity of the vibrations via second order vibrational perturbation theory (VPT2). Lastly, the enthalpy change associated with the formation of the dimer from two monomer units was determined using the focal point analysis. Computations including coupled-cluster through perturbative quadruples as well as basis sets up to six-zeta quality, including core functions (cc-pCVXZ, X=D,T,Q,5,6) were used to extrapolate to the AE-CCSDT(Q)/CBS energy associated with this hydrogen-bond forming process. After appending anharmonic zero-point vibrational, relativistic, and diagonal Born-Oppenheimer corrections, we report a value of -3.93 kcal mol-1 for the enthalpy of formation. To our knowledge, each set of results (geometries, vibrational frequencies, and energetics) reported in this study represents the highest-level and most reliable theoretical predictions reported for this system.
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Affiliation(s)
- Preston R Hoobler
- Center for Computational Quantum Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Justin M Turney
- Center for Computational Quantum Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Jay Agarwal
- Center for Computational Quantum Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Henry F Schaefer
- Center for Computational Quantum Chemistry, University of Georgia, Athens, GA, 30602, USA
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Yang X, Yan CX, Yang F, Zhou DG, Zhou PP, Liu S. Linear σ-Hole Bonding Dimers and Trimers Between Dihalogen Molecules XY (X, Y=Cl, Br) and Carbon Monoxide. ChemistrySelect 2017. [DOI: 10.1002/slct.201700075] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xing Yang
- State Key Laboratory of Applied Organic Chemistry; Key Laboratory of NonferrousMetal Chemistry and Resources Utilization of Gansu Province; College ofChemistry and Chemical Engineering; Lanzhou University; 222 South TianshuiRoad 730000 Lanzhou P. R. China
| | - Chao-Xian Yan
- State Key Laboratory of Applied Organic Chemistry; Key Laboratory of NonferrousMetal Chemistry and Resources Utilization of Gansu Province; College ofChemistry and Chemical Engineering; Lanzhou University; 222 South TianshuiRoad 730000 Lanzhou P. R. China
| | - Fan Yang
- State Key Laboratory of Applied Organic Chemistry; Key Laboratory of NonferrousMetal Chemistry and Resources Utilization of Gansu Province; College ofChemistry and Chemical Engineering; Lanzhou University; 222 South TianshuiRoad 730000 Lanzhou P. R. China
| | - Da-Gang Zhou
- State Key Laboratory of Applied Organic Chemistry; Key Laboratory of NonferrousMetal Chemistry and Resources Utilization of Gansu Province; College ofChemistry and Chemical Engineering; Lanzhou University; 222 South TianshuiRoad 730000 Lanzhou P. R. China
| | - Pan-Pan Zhou
- State Key Laboratory of Applied Organic Chemistry; Key Laboratory of NonferrousMetal Chemistry and Resources Utilization of Gansu Province; College ofChemistry and Chemical Engineering; Lanzhou University; 222 South TianshuiRoad 730000 Lanzhou P. R. China
| | - Shubin Liu
- Research Computing Center; University of North Carolina; Chapel Hill, NC 27599 USA
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Salehzadeh S, Maleki F. New equation for calculating total interaction energy in one noncyclic ABC triad and new insights into cooperativity of noncovalent bonds. J Comput Chem 2016; 37:2799-2807. [PMID: 27753119 DOI: 10.1002/jcc.24505] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/02/2016] [Accepted: 09/07/2016] [Indexed: 11/10/2022]
Abstract
In this work, a new equation consist of A⋅⋅⋅B, B⋅⋅⋅C, A⋅⋅⋅BC, and AB⋅⋅⋅C interactions is proposed for calculating the total interaction energy of noncyclic ABC triads. New equations are also proposed for calculating the changes in values of A⋅⋅⋅B and B⋅⋅⋅C interactions on the formation of triad from the corresponding dyads. The advantages of equations proposed here in comparison with many-body interaction energy approach are discussed. All proposed equations were tested in F3 MLi⋅⋅⋅NCH⋅⋅⋅HLH and F3 MLi⋅⋅⋅HLH⋅⋅⋅HCN (M = C, Si; L = Be, Mg) as well as H3 N⋅⋅⋅XY⋅⋅⋅HF (X, Y = F, Cl, Br) noncyclic A⋅⋅⋅B⋅⋅⋅C triads. The data show that the total cooperativity of triad correlates well with the sum of the changes in values of A⋅⋅⋅B and B⋅⋅⋅C interactions calculated through new equations proposed here. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
| | - Farahnaz Maleki
- Department of Chemistry, Bu-Ali Sina University, Hamedan, Iran
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5
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Tuning of chalcogen bonds by cation–π interactions: cooperative and diminutive effects. J Mol Model 2015; 21:300. [DOI: 10.1007/s00894-015-2850-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 10/23/2015] [Indexed: 10/22/2022]
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6
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Fantuzzi F, Cardozo TM, Nascimento MAC. Nature of the chemical bond and origin of the inverted dipole moment in boron fluoride: a generalized valence bond approach. J Phys Chem A 2015; 119:5335-43. [PMID: 25531385 DOI: 10.1021/jp510085r] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The generalized product function energy partitioning (GPF-EP) method has been applied to investigate the nature of the chemical bond and the origin of the inverted dipole moment of the BF molecule. The calculations were carried out with GPF wave functions treating all of the core electrons as a single Hartree-Fock group and the valence electrons at the generalized valence bond perfect-pairing (GVB-PP) or full GVB levels, with the cc-pVTZ basis set. The results show that the chemical structure of both X (1)Σ(+) and a (3)Π states is composed of a single bond. The lower dissociation energy of the excited state is attributed to a stabilizing intraatomic singlet coupling involving the B 2sp-like lobe orbitals after bond dissociation. An increase of electron density on the B atom caused by the reorientation of the boron 2sp-like lobe orbitals is identified as the main responsible effect for the electric dipole inversion in the ground state of BF. Finally, it is shown that π back-bonding from fluorine to boron plays a minor role in the electron density displacement to the bonding region in both states. Moreover, this effect is associated with changes in the quasi-classical component of the electron density only and does not contribute to covalency in either of the states. Therefore, at least for the case of the BF molecule, the term back-bonding is misleading, since it does not contribute to the bond formation.
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Affiliation(s)
- Felipe Fantuzzi
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ 21941-909, Brazil
| | - Thiago Messias Cardozo
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro RJ 21941-909, Brazil
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Zhuo H, Li Q, Li W, Cheng J. Non-additivity between substitution and cooperative effects in enhancing hydrogen bonds. J Chem Phys 2014; 141:244305. [DOI: 10.1063/1.4904294] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Solimannejad M, Rabbani M, Ahmadi A, Esrafili MD. Cooperative and diminutive interplay between the sodium bonding with hydrogen and dihydrogen bondings in ternary complexes of NaC3N with HMgH and HCN (HNC). Mol Phys 2014. [DOI: 10.1080/00268976.2013.879496] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Li Q, Zhuo H, Yang X, Cheng J, Li W, Loffredo RE. Cooperative and Diminutive Effects of Pnicogen Bonds and Cation-π Interactions. Chemphyschem 2014; 15:500-6. [DOI: 10.1002/cphc.201300965] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 11/22/2013] [Indexed: 11/05/2022]
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Lv H, Zhuo HY, Li QZ, Yang X, Li WZ, Cheng JB. Mutual influence between covalent and noncovalent interactions in H3N–MCN–XF (X = H, Li, Cl, Br; M = Ag, Cu, Au). Mol Phys 2013. [DOI: 10.1080/00268976.2013.830788] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Zhao X, Pang X, Yan X, Jin W. Halogen Bonding or Hydrogen Bonding between 2,2,6,6‐Tetramethylpiperidine‐noxyl Radical and Trihalomethanes CHX3(X=CI, Br, I). CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/02/172-180] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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12
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Magoulas I, Kalemos A, Mavridis A. An ab initio study of the electronic structure of BF and BF+. J Chem Phys 2013; 138:104312. [DOI: 10.1063/1.4793738] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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Zhao XR, Wu YJ, Han J, Shen QJ, Jin WJ. Theoretical study of the triangular bonding complex formed by carbon tetrabromide, a halide, and a solvent molecule in the gas phase. J Mol Model 2012; 19:299-304. [PMID: 22890747 DOI: 10.1007/s00894-012-1518-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 06/25/2012] [Indexed: 11/28/2022]
Abstract
MP2(full)/aug-cc-pVDZ(-PP) computations predict that new triangular bonding complexes CBr4...X-...H-C (where X- is a halide and H-C refers to a protic solvent molecule) consist of one halogen bond and two hydrogen bonds in the gas phase. Carbon tetrabromide acts as the donor in the halogen bond, while it acts as an acceptor in the hydrogen bond. The halide (which commonly acts as an acceptor) can interact with both carbon tetrabromide and solvent molecule (CH3CN, CH2Cl2, CHCl3) to form a halogen bond and a hydrogen bond, respectively. The strength of the halogen bond obeys the order CBr4...Cl->CBr4...Br->CBr4...I-. For the hydrogen bonds formed between various halides and the same solvent molecule, the strength of the hydrogen bond obeys the order C-H...Cl->C-H...Br->C-H...I-. For the hydrogen bonds formed between the same halide and various solvent molecules, the interaction strength is proportional to the acidity of the hydrogen in the solvent molecule. The diminutive effect is present between the hydrogen bonds and the halogen bond in chlorine and bromine triangular bonding complexes. Complexes containing iodide ion show weak cooperative effects.
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Affiliation(s)
- Xiao Ran Zhao
- College of Chemistry, Beijing Normal University, Beijing, 100875, People's Republic of China
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LIU YUHUI, ZHOU PANWANG. FACILITATED PHOTOLYSIS OF 9-FLUORENOL IN ALCOHOLS BY EXCITED-STATE HYDROGEN BOND REORGANIZATION. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2012. [DOI: 10.1142/s0219633612500265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Time-dependent density functional theory (TDDFT) and second-order coupled cluster method with resolution-of-the-identity approximation (RICC2) were used to investigate the photolysis dynamics of 9-fluorenol (FOH) in alcohols. In this work, a novel mechanism for the accelerated photolysis dynamics of FOH in alcohols is proposed for the first time. The two hydrogen bonds present different effects in the dissociation process of C9–O bond in MeOH⋯FOH⋯MeOH trimer: formation of hydrogen bond MeOH⋯FOH could weaken the C9–O bond, while, hydrogen bond FOH⋯MeOH fastens the bond. Moreover, the thermodynamic equilibrium can be accomplished in both ground and excited states between hydrogen-bonded complexes, since the hydrogen bond reorganization occurs in hundreds of femtosecond upon the excitation. The excited-state potential energy (PE) curves along C9–O bond have been optimized in S1 state. The cleavage of C9–O bond upon the photoexcitation would be facilitated effectively in MeOH⋯FOH dimer. This leads the thermodynamic equilibrium between hydrogen-bonded complexes leaning to the side of MeOH⋯FOH dimer to quench the fluorescence. Therefore, the photolysis of 9-fluorenol in alcohols can be facilitated effectively by MeOH⋯FOH hydrogen bond via excited-state hydrogen bond reorganization. Additionally, the excited-state hydrogen bond reorganization is also the rate-controlling step in photolysis of FOH in alcohols, since there is no barrier in the PE curve of MeOH⋯FOH dimer.
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Affiliation(s)
- YU-HUI LIU
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - PAN-WANG ZHOU
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China
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Solimannejad M. Cooperative and diminutive interplay between lithium and dihydrogen bonding in F3YLi…NCH…HMH and F3YLi…HMH…HCN triads (Y=C, Si; M=Be, Mg). Chemphyschem 2012; 13:3158-62. [PMID: 22707081 DOI: 10.1002/cphc.201200333] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/07/2012] [Indexed: 11/11/2022]
Abstract
The F(3)YLi…NCH…HMH and F(3)YLi…HMH…HCN triads (Y=C, Si; M=Be, and Mg) are connected by lithium and dihydrogen bonds. To understand the properties of the systems better, the corresponding dyads are also studied. Molecular geometries, binding energies, infrared spectra and NMR properties of monomers, dyads, and triads are investigated at the MP2/6-311++G** computational level. Particular attention is paid to parameters, such as cooperative energies, and many-body interaction energies. Triads with the HMH molecule located at the end of the chain, show energetic cooperativity ranging between -3.66 to -7.59 kJ mol(-1). When the HMH molecule is located in the middle, the obtained cluster is diminutive with an energetic effect between 3.49 to 5.17 kJ mol(-1). The electronic properties of the complexes are analyzed using parameters derived from the atoms in molecules (AIM) methodology.
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Affiliation(s)
- Mohammad Solimannejad
- Quantum Chemistry Group, Department of Chemistry, Faculty of Sciences, Arak University, Arak 38156-8-8349, Iran.
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16
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Mateus MPS, Galamba N, Cabral BJC. Electronic Properties of Hydrogen-Bonded Complexes of Benzene(HCN)1–4: Comparison with Benzene(H2O)1–4. J Phys Chem A 2011; 115:13714-23. [DOI: 10.1021/jp208595p] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- M. P. S. Mateus
- Grupo de Física-Matemática da Universidade de Lisboa, Avenido Prof. Gama Pinto 2, 1649-003 Lisboa, Portugal
| | - N. Galamba
- Grupo de Física-Matemática da Universidade de Lisboa, Avenido Prof. Gama Pinto 2, 1649-003 Lisboa, Portugal
| | - B. J. Costa Cabral
- Grupo de Física-Matemática da Universidade de Lisboa, Avenido Prof. Gama Pinto 2, 1649-003 Lisboa, Portugal
- Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal
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Del Bene JE, Alkorta I, Elguero J. Ab Initio Study of Ternary Complexes X:(HCNH)+:Z with X, Z = NCH, CNH, FH, ClH, and FCl: Diminutive Cooperative Effects on Structures, Binding Energies, and Spin–Spin Coupling Constants Across Hydrogen Bonds. J Phys Chem A 2011; 115:12677-87. [DOI: 10.1021/jp203576j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Janet E. Del Bene
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, United States
| | - Ibon Alkorta
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - José Elguero
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
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Góra RW, Zaleśny R, Zawada A, Bartkowiak W, Skwara B, Papadopoulos MG, Silva DL. Large Changes of Static Electric Properties Induced by Hydrogen Bonding: An ab Initio Study of Linear HCN Oligomers. J Phys Chem A 2011; 115:4691-700. [DOI: 10.1021/jp110226h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert W. Góra
- Theoretical Chemistry Group, Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Robert Zaleśny
- Theoretical Chemistry Group, Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Agnieszka Zawada
- Theoretical Chemistry Group, Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Wojciech Bartkowiak
- Theoretical Chemistry Group, Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Bartłomiej Skwara
- The Institute of Organic and Pharmaceutical Chemistry, National Hellenic Research Foundation, 48 Vas. Constantinou Avenue, Athens 116 35, Greece
| | - Manthos G. Papadopoulos
- The Institute of Organic and Pharmaceutical Chemistry, National Hellenic Research Foundation, 48 Vas. Constantinou Avenue, Athens 116 35, Greece
| | - Daniel L. Silva
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, SP, Brazil
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Competition and cooperativity between hydrogen bond and halogen bond in HNC⋯(HOBr)n and (HNC)n⋯HOBr (n=1 and 2) systems. COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2010.11.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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McDowell SAC, Buckingham AD. Cooperative hydrogen bonding in trimers involving HCN and HBO. Phys Chem Chem Phys 2011; 13:14097-100. [DOI: 10.1039/c1cp20660e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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21
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Del Bene JE, Alkorta I, Elguero J. An ab initio study of cooperative effects in ternary complexes X:CNH:Z with X, Z=CNH, FH, ClH, FCl, and HLi: structures, binding energies, and spin–spin coupling constants across intermolecular bonds. Phys Chem Chem Phys 2011; 13:13951-61. [DOI: 10.1039/c1cp20480g] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Solimannejad M, Malekani M, Alkorta I. Cooperative and diminutive unusual weak bonding in F3CX···HMgH···Y and F3CX···Y···HMgH trimers (X = Cl, Br; Y = HCN, and HNC). J Phys Chem A 2010; 114:12106-11. [PMID: 20977251 DOI: 10.1021/jp1075687] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
MP2 calculations with cc-pVTZ basis set were used to analyze intermolecular interactions in F(3)CX···HMgH···Y and F(3)CX···Y···HMgH triads (X = Cl, Br; Y = HCN, and HNC) which are connecting with three kinds of unusual weak interactions, namely halogen-hydride, dihydrogen, and σ-hole. To understand the properties of the systems better, the corresponding dyads are also studied. Molecular geometries, binding energies, and infrared spectra of monomers, dyads, and triads were investigated at the MP2/cc-pVTZ computational level. Particular attention is given to parameters such as cooperative energies, cooperative dipole moments, and many-body interaction energies. Those complexes with simultaneous presence of a σ-hole bond and a dihydrogen bond show cooperativity energy ranging between -1.02 and -2.31 kJ mol(-1), whereas those with a halogen-hydride bond and a dihydrogen bond are diminutive, with this energetic effect between 0.1 and 0.63 kJ mol(-1). The electronic properties of the complexes have been analyzed using the molecular electrostatic potential (MEP), the electron density shift maps, and the parameters derived from the atoms in molecules (AIM) methodology.
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Affiliation(s)
- Mohammad Solimannejad
- Quantum Chemistry Group, Department of Chemistry, Faculty of Sciences, Arak University, Arak 38156-8-8349, Iran.
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