1
|
Grabowski SJ, Ruipérez F. Dihydrogen bond interactions as a result of H2 cleavage at Cu, Ag and Au centres. Phys Chem Chem Phys 2016; 18:12810-8. [PMID: 27101741 DOI: 10.1039/c6cp00046k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A quantum chemical study of H2 activation at fluorides of coinage metals, MF (M = Cu, Ag and Au), and its splitting was performed. The following reaction path was analyzed: FMH2→ FHHM → HMFH, where both the molecular complexes and the corresponding transition states have been characterized at the CCSD(T)/aug-cc-pVQZ//MP2/aug-cc-pVQZ level of theory. Further single-point CASSCF/CASPT2 calculations, including spin-orbit coupling effects, were also performed to analyze the role of non-dynamic correlation. The scalar relativistic effects are included via aug-cc-pVQZ-PP basis sets used for the metals. The dihydrogen-bonded copper (FHHCu) and silver (FHHAg) complexes are observed as a result of H2 cleavage, while the corresponding FHHAu gold complex is not found but the HAuHF arrangement is observed, instead. The energetic and geometrical parameters of the complexes have been analyzed and both the Quantum Theory of Atoms in Molecules approach and the Natural Bond Orbitals method were additionally applied to analyze the intermolecular interactions.
Collapse
Affiliation(s)
- Sławomir J Grabowski
- Faculty of Chemistry, University of the Basque Country and Donostia International Physics Center (DIPC), P.K. 1072, 20080 Donostia-San Sebastián, Spain
| | | |
Collapse
|
2
|
Grabowski SJ. What is Common for Dihydrogen Bond and H…σ Interaction—Theoretical Analysis and Experimental Evidences. CHALLENGES AND ADVANCES IN COMPUTATIONAL CHEMISTRY AND PHYSICS 2015. [DOI: 10.1007/978-3-319-14163-3_7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
3
|
Del Bene JE, Alkorta I, Sanchez-Sanz G, Elguero J. 31P–31P spin–spin coupling constants for pnicogen homodimers. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.07.043] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
4
|
An X, Jing B, Li Q. Novel Halogen-Bonded Complexes H3NBH3···XY (XY = ClF, ClCl, BrF, BrCl, and BrBr): Partially Covalent Character. J Phys Chem A 2010; 114:6438-43. [DOI: 10.1021/jp101732c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xiulin An
- The Laboratory of Theoretical and Computational Chemistry, Science and Engineering College of Chemistry and Biology, Yantai University, Yantai 264005, People’s Republic of China
| | - Bo Jing
- The Laboratory of Theoretical and Computational Chemistry, Science and Engineering College of Chemistry and Biology, Yantai University, Yantai 264005, People’s Republic of China
| | - Qingzhong Li
- The Laboratory of Theoretical and Computational Chemistry, Science and Engineering College of Chemistry and Biology, Yantai University, Yantai 264005, People’s Republic of China
| |
Collapse
|
5
|
Del Bene JE, Alkorta I, Elguero J. Characterizing Complexes with F−Li+−F Lithium Bonds: Structures, Binding Energies, and Spin−Spin Coupling Constants. J Phys Chem A 2009; 113:8359-65. [DOI: 10.1021/jp9020917] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Janet E. Del Bene
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - Ibon Alkorta
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - José Elguero
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, and Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| |
Collapse
|
6
|
Olejniczak M, Pecul M. Spin-Spin Coupling Constants Transmitted through IrH⋅⋅⋅HN Dihydrogen Bonds. Chemphyschem 2009; 10:1247-59. [DOI: 10.1002/cphc.200800817] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
7
|
Doskocz M, Strupińska A, Roszak S, Prokopowicz M, Koole LH, Kafarski P. Theoretical study of spin-spin coupling across the hydrogen (O-H⋯N) bond in adenosine derivatives. J Mol Model 2009; 15:651-8. [DOI: 10.1007/s00894-009-0473-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Accepted: 01/22/2009] [Indexed: 10/21/2022]
|
8
|
Alkorta I, Elguero J, Grabowski SJ. How To Determine Whether Intramolecular H···H Interactions Can Be Classified as Dihydrogen Bonds. J Phys Chem A 2008; 112:2721-7. [PMID: 18311957 DOI: 10.1021/jp711387g] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, 28006-Madrid, Spain, and Department of Crystallography and Crystal Chemistry, University of Łódź, 90-236 Łódź ul., Pomorska 149/153, Poland
| | - José Elguero
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, 28006-Madrid, Spain, and Department of Crystallography and Crystal Chemistry, University of Łódź, 90-236 Łódź ul., Pomorska 149/153, Poland
| | - Sławomir J. Grabowski
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, 28006-Madrid, Spain, and Department of Crystallography and Crystal Chemistry, University of Łódź, 90-236 Łódź ul., Pomorska 149/153, Poland
| |
Collapse
|
9
|
Alkorta I, Zborowski K, Elguero J, Solimannejad M. Theoretical Study of Dihydrogen Bonds between (XH)2, X = Li, Na, BeH, and MgH, and Weak Hydrogen Bond Donors (HCN, HNC, and HCCH). J Phys Chem A 2006; 110:10279-86. [PMID: 16928119 DOI: 10.1021/jp061481x] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The dihydrogen-bonded (DHB) complexes formed by (XH)2, with X = Li, Na, BeH, and MgH, with one, two, and four protonic molecules (HCN, HNC, and HCCH) have been studied. These complexes have been compared to those of the XH monomers with the same hydrogen bond donor molecules. The energetic results have been rationalized based on the electrostatic potential of the isolated hydridic systems. The electron density properties have been analyzed within the AIM methodology, both at the bond critical points and the integrated values at the atomic basins. Exponential relationships between several properties calculated at the bond critical points (rho,nabla2rho, lambdai, G, and V) and variation of integrated properties (energy, charge, and volume) vs the DHB distance have been obtained.
Collapse
Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, 28006 Madrid, Spain.
| | | | | | | |
Collapse
|
10
|
Jimeno ML, Alkorta I, Elguero J, Del Bene JE. Computed coupling constants in X(CH3)nH(4-n) moieties where X = 13C and 15N+, and n = 0-4: comparisons with experimental data. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2006; 44:698-707. [PMID: 16671054 DOI: 10.1002/mrc.1840] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Seventy-three unique spin-spin coupling constants have been analyzed for the ten species in the two series X(CH3)nH(4-n), where the central atom X is 13C or 15N+. Thirty-seven experimental values have been obtained from the literature, and several new coupling constants have been measured for the methyl-substituted ammonium ions. Both DFT with the B3LYP functional and ab initio EOM-CCSD calculations have been carried out on these same systems. Coupling constants computed by these two methods are in agreement with experimental values. Some problems related to coupling constants for the cationic ammonium systems have been resolved when these were recomputed at EOM-CCSD for complexes in which NH4+ is hydrogen-bonded to H2O molecules.
Collapse
Affiliation(s)
- María-Luisa Jimeno
- Centro de Química Orgánica "Manuel Lora-Tamayo", CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | | | | | | |
Collapse
|
11
|
Solimannejad M, Alkorta I. Theoretical study of dihydrogen bonds in HnMH⋯HArF and HnMH⋯HKrF complexes (n=1–3; M=Be, Al, Ga, Si, Ge). Chem Phys 2006. [DOI: 10.1016/j.chemphys.2005.11.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
12
|
Solimannejad M, Amlashi LM, Alkorta I, Elguero J. XeH2 as a proton-accepting molecule for dihydrogen bonded systems: A theoretical study. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.02.070] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
13
|
Cybulski H, Tymińska E, Sadlej J. The Properties of Weak and Strong Dihydrogen-Bonded DH⋅⋅⋅HA Complexes. Chemphyschem 2006; 7:629-39. [PMID: 16477668 DOI: 10.1002/cphc.200500462] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The properties of six dihydrogen-bonded (DHB) dimers with the BeH2 molecule as a proton acceptor were calculated by MP2, CCSD(T) and B3LYP methods. The structural, energetic and spectroscopic parameters are presented and analyzed in terms of their possible correlation with the interaction energy and the intermolecular H...H separation. The symmetry-adapted perturbation theory (SAPT) calculations were performed to gain more insight into the nature of the H...H interactions. The studied complexes are divided into three groups based on the calculated intermolecular distances and the interaction energies which range from approximately -1 to -42 kJ mol(-1). The analysis of the interaction energy components indicates that, in contrast to conventional hydrogen bonds, the induction energy is the most important term in the BeH2NH4+ complex. On the other hand, there is no sharp boundary between the DHB complexes classified as hydrogen bonded and van der Waals systems. The complexation-induced changes in vibrational frequencies and in proton shielding constants show a relationship with the interaction energy. The values of the 2hJXH and 3hJBeX coupling constants correlate well with the interaction energy and with the intermolecular distance.
Collapse
Affiliation(s)
- Hubert Cybulski
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | | | | |
Collapse
|
14
|
Solimannejad M, Boutalib A. Theoretical investigation of the weakly dihydrogen bonded dimers H2−nXnAlH⋯HArF and H2−nXnAlH⋯HKrF (n=0–2; X=F, Cl). Chem Phys 2006. [DOI: 10.1016/j.chemphys.2005.07.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
15
|
Solimannejad M, Scheiner S. Theoretical Investigation of the Dihydrogen Bond Linking MH2 with HCCRgF (M = Zn, Cd; Rg = Ar, Kr). J Phys Chem A 2005; 109:11933-5. [PMID: 16366645 DOI: 10.1021/jp0563383] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An ab initio computational study of the properties of four linear dihydrogen-bonded complexes pairing MH2 (M = Zn, Cd) with HCCRgF (Rg = Ar, Kr) was undertaken at the MP2/DGDZVP level of theory. The calculated complexation energies of the linear complexes vary between 6.5 kJ/mol for M = Zn to 8.5 kJ/mol for M = Cd. Equilibrium interatomic H...H distances are roughly 2.07 A for all four complexes. The red shifts of the H-C stretching frequency of HCCRgF correlate nicely with the interaction energies.
Collapse
Affiliation(s)
- Mohammad Solimannejad
- Quantum Chemistry Group, Department of Chemistry, Arak University, 38156-879 Arak, Iran.
| | | |
Collapse
|
16
|
Alkorta I, Elguero J, Del Bene JE. A theoretical investigation of N–H⋯OP hydrogen bonds through 15N–31P and 1H–31P coupling constants. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.06.104] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
17
|
Solimannejad M, Scheiner S. Theoretical Investigation of the Weakly Dihydrogen Bonded Complexes FArCCH···HBeX (X = H, F, Cl, Br). J Phys Chem A 2005; 109:6137-9. [PMID: 16833952 DOI: 10.1021/jp052534y] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An ab initio computational study of the properties of four linear dihydrogen-bonded complexes formed between the first compound with an Ar-C chemical bond (FArCCH) and HBeX (X = H, F, Cl, and Br) molecules was undertaken at the MP2/6-311++G(2d,2p) level of theory. The calculated complexation energy at MP2 and G2(MP2) levels decreases in the order HBeH...HCCArF > BrBeH...HCCArF > ClBeH...HCCArF > FBeH...HCCArF. The intermolecular stretching frequency, and shifts within the monomers, are compared with the energetic strength of complexation.
Collapse
|
18
|
Grabowski SJ, Sokalski WA, Leszczynski J. How Short Can the H···H Intermolecular Contact Be? New Findings that Reveal the Covalent Nature of Extremely Strong Interactions. J Phys Chem A 2005; 109:4331-41. [PMID: 16833763 DOI: 10.1021/jp0444215] [Citation(s) in RCA: 155] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ab initio calculations at the MP2/6-311++G(d,p) and MP2/aug-cc-pVDZ//MP2/aug-cc-pVTZ levels have been performed for the following complexes: H2OH+...HBeH, H2OH+...HBeBeH, H2OH+...HBeF, HClOH+...HBeH, Cl2OH+...HBeH, and Cl2OH+...HBeF. For all dimers considered, extremely short H...H intermolecular contacts (1.0-1.3 A) were obtained. These are the shortest intermolecular distances which have ever been reported, with binding energies within the range of 13.7-24.3 kcal/mol (MP2/aug-cc-pVDZ//MP2/aug-cc-pVTZ level). The interaction energies of the complexes analyzed were also extrapolated to the complete basis set (CBS) limit. To explain the nature of such strong interactions, the Bader theory was applied, and the characteristics of the bond critical points (BCPs) were analyzed. It was pointed out that for the major part of the H...H contacts considered here the Laplacian of the electron density at H...H BCP is negative indicating the partly covalent nature of such a connection. The term "covalent character of the hydrogen bond" used sometimes in recent studies is discussed. An analysis of the interaction energy components for dihydrogen bonded systems considered indicates that in contrast to conventional hydrogen bonded systems the attractive electrostatic term is outweighed by the repulsive exchange energy term and that the higher order delocalization energy term is the most important attractive term.
Collapse
Affiliation(s)
- Sławomir J Grabowski
- Department of Crystallography and Crystal Chemistry, University of Łódź, 90-236 Łódź, ul. Pomorska 149/153, Poland.
| | | | | |
Collapse
|
19
|
|
20
|
Grabowski SJ, Sokalski WA, Leszczynski J. Nature of X−H+δ···-δH−Y Dihydrogen Bonds and X−H···σ Interactions. J Phys Chem A 2004. [DOI: 10.1021/jp049874o] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sławomir J. Grabowski
- Department of Crystallography and Crystal Chemistry, University of Łódź, 90-236 Łódź, ul. Pomorska 149/153, Poland, Computational Center for Molecular Structure and Interactions, Department of Chemistry, Jackson State University, Jackson, Mississippi 39217, and Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - W. Andrzej Sokalski
- Department of Crystallography and Crystal Chemistry, University of Łódź, 90-236 Łódź, ul. Pomorska 149/153, Poland, Computational Center for Molecular Structure and Interactions, Department of Chemistry, Jackson State University, Jackson, Mississippi 39217, and Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Jerzy Leszczynski
- Department of Crystallography and Crystal Chemistry, University of Łódź, 90-236 Łódź, ul. Pomorska 149/153, Poland, Computational Center for Molecular Structure and Interactions, Department of Chemistry, Jackson State University, Jackson, Mississippi 39217, and Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
| |
Collapse
|
21
|
Cybulski H, Pecul M, Sadlej J, Helgaker T. Characterization of dihydrogen-bonded D–H⋯H–A complexes on the basis of infrared and magnetic resonance spectroscopic parameters. J Chem Phys 2003. [DOI: 10.1063/1.1597633] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
22
|
Basis set dependence of NMR spin–spin couplings in density functional theory calculations: first row and hydrogen atoms. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)00886-8] [Citation(s) in RCA: 168] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
23
|
Robertson KN, Knop O, Cameron TS. C-H···H-C interactions in organoammonium tetraphenylborates: another look at dihydrogen bonds. CAN J CHEM 2003. [DOI: 10.1139/v03-080] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The crystal structures of the tetraphenylborates of the dabcoH+, guanidinium (MeCN solvate), and biguanidinium cations are shown to contain a variety of C-H···H-C dihydrogen (DB) bonds of nominally zero polarity, as well as a variety of N-H···N, C-H···N, N-H···Ph, and C-H···Ph hydrogen (HB) bonds. These intermolecular bonds have been characterized topologically after multipole refinement of the structures. The coexistence of the DBs and HBs in each of the structures makes it possible to establish their relative strength hierarchy. It also illustrates the importance of the DBs in satisfying the tendency of these structures to maximize the total intermolecular bonding engagement. To compare the above DBs with other DBs, the results of an extensive set of MP2/6-31G(d,p) calculations (supplied by I. Alkorta) were analyzed for reference correlations between the bond-critical parameters. Thus, for an X-H···H-Y bond, the difference Δε(H)m between the Mulliken charges on the H atoms in the uncomplexed X-H and H-Y components correlates quite well with the X-H···H-Y parameters and can be used for predicting the topological strength of an X-H···H-Y bond. The use of the difference Δε(H)c in the bond does not appear to change the correlation significantly; closer correlations are observed when the amount of charge transferred on formation of the H···H bond is used instead of Δε(H)m or Δε(H)c. Bonding interactions are obtained even between like or symmetry-related H atoms as a consequence of induced-dipole interactions, which accounts for the existence of the above intermolecular C-H···H-C bonds with d(H···H) = 2.182.57 Å, electron density at the bond-critical point of ~0.050.08 e/Å3, and a rough estimate of the H···H binding energy of ~1-5 kcal/mol. Examination of the bond-critical parameters of X-H···H-Y bonds also suggests a criterion of stability of these bonds with respect to the transition from non-shared (closed-shell) X-H···H-Y interaction to covalent (shared-shell) X···H-H···Y interaction. This transition appears to be discontinuous.Key words: bond-critical parameters, bond topology, dihydrogen bonds, hydrogen bonds, organoammonium tetraphenylborates.
Collapse
|
24
|
Del Bene JE, Perera SA, Bartlett RJ, Yáñez M, Mó O, Elguero J, Alkorta I. Two-Bond 19F−15N Spin−Spin Coupling Constants (2hJF-N) across F−H···N Hydrogen Bonds. J Phys Chem A 2003. [DOI: 10.1021/jp022555h] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Janet E. Del Bene
- Quantum Theory Project, University of Florida, Gainesville, Florida 32611, Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain, and Instituto de Química, Médica, CSIC, Juan de la Cierva, 3, 28006-Madrid, Spain
| | - S. Ajith Perera
- Quantum Theory Project, University of Florida, Gainesville, Florida 32611, Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain, and Instituto de Química, Médica, CSIC, Juan de la Cierva, 3, 28006-Madrid, Spain
| | - Rodney J. Bartlett
- Quantum Theory Project, University of Florida, Gainesville, Florida 32611, Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain, and Instituto de Química, Médica, CSIC, Juan de la Cierva, 3, 28006-Madrid, Spain
| | - Manuel Yáñez
- Quantum Theory Project, University of Florida, Gainesville, Florida 32611, Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain, and Instituto de Química, Médica, CSIC, Juan de la Cierva, 3, 28006-Madrid, Spain
| | - Otilia Mó
- Quantum Theory Project, University of Florida, Gainesville, Florida 32611, Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain, and Instituto de Química, Médica, CSIC, Juan de la Cierva, 3, 28006-Madrid, Spain
| | - José Elguero
- Quantum Theory Project, University of Florida, Gainesville, Florida 32611, Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain, and Instituto de Química, Médica, CSIC, Juan de la Cierva, 3, 28006-Madrid, Spain
| | - Ibon Alkorta
- Quantum Theory Project, University of Florida, Gainesville, Florida 32611, Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555, Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain, and Instituto de Química, Médica, CSIC, Juan de la Cierva, 3, 28006-Madrid, Spain
| |
Collapse
|