1
|
García-Rodeja Y, Feixas F, Matito E, Solà M. Three-centre electron sharing indices (3c-ESIs) as a tool to differentiate among (an)agostic interactions and hydrogen bonds in transition metal complexes. Phys Chem Chem Phys 2022; 24:29333-29337. [PMID: 36472153 DOI: 10.1039/d2cp05221k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The agostic bond plays an important role in chemistry, not only in transition metal chemistry but also in main group chemistry. In some complexes with M⋯H-X (X = C, N) interactions, differentiation among agostic, anagostic, and hydrogen bonds is challenging. Here we propose the use of three-centre electron sharing indices to classify M⋯H-X (X = C, N) interactions.
Collapse
Affiliation(s)
- Yago García-Rodeja
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Campus Montilivi, 17003 Girona, Catalonia, Spain.
| | - Ferran Feixas
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Campus Montilivi, 17003 Girona, Catalonia, Spain.
| | - Eduard Matito
- Donostia International Physics Center (DIPC), Donostia, Euskadi, Spain.,Ikerbasque Foundation for Science, 48011 Bilbao, Euskadi, Spain
| | - Miquel Solà
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Campus Montilivi, 17003 Girona, Catalonia, Spain.
| |
Collapse
|
2
|
Brémond É, Tognetti V, Chermette H, Sancho-García JC, Joubert L, Adamo C. Electronic Energy and Local Property Errors at QTAIM Critical Points while Climbing Perdew's Ladder of Density-Functional Approximations. J Chem Theory Comput 2021; 18:293-308. [PMID: 34958205 DOI: 10.1021/acs.jctc.1c00981] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigate the relationships between electron-density and electronic-energy errors produced by modern exchange-correlation density-functional approximations belonging to all of the rungs of Perdew's ladder. To this aim, a panel of relevant (semi)local properties evaluated at critical points of the electron-density field (as defined within the framework of Bader's atoms-in-molecules theory) are computed on a large selection of molecular systems involved in thermodynamic, kinetic, and noncovalent interaction chemical databases using density functionals developed in a nonempirical and minimally and highly parametrized fashion. The comparison of their density- and energy-based performance, also discussed in terms of density-driven errors, casts light on the strengths and weaknesses of the most recent and efficient density-functional approximations.
Collapse
Affiliation(s)
- Éric Brémond
- Université de Paris, ITODYS, CNRS, F-75006 Paris, France
| | - Vincent Tognetti
- Normandy University, COBRA UMR 6014 and FR 3038, Université de Rouen INSA Rouen, CNRS, F-76821 Mont St Aignan, France
| | - Henry Chermette
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, Université Lyon 1, 5 rue de la Doua, F-69100 Villeurbanne, France
| | | | - Laurent Joubert
- Normandy University, COBRA UMR 6014 and FR 3038, Université de Rouen INSA Rouen, CNRS, F-76821 Mont St Aignan, France
| | - Carlo Adamo
- Chimie ParisTech, PSL Research University, CNRS, Institute of Chemistry for Life and Health Sciences (i-CLeHS), UMR 8060, F-75005 Paris, France.,Institut Universitaire de France, 103 Boulevard Saint Michel, F-75005 Paris, France
| |
Collapse
|
3
|
|
4
|
Cortona P. Hydrogen bond symmetrization and elastic constants under pressure of δ-AlOOH. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:325505. [PMID: 28607225 DOI: 10.1088/1361-648x/aa791f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The elastic constants of δ-AlOOH have been calculated for applied pressures in the range 0-40 GPa using three exchange-correlation functionals, i.e. PBEsol, TCAsol and PBE. PBEsol and TCAsol, which describe the geometry of this system very well, give similar results, while the PBE values are smaller, a consequence of the fact that the PBE lattice parameters are too large. In agreement with the experiments, the calculations show that at low pressure the axial compressibility is greater in the b direction and smaller in the c direction, while the opposite is true at high pressure. This change takes place 5 GPa before the calculated hydrogen bond symmetrization transition. Combining this result with those reported in the experimental papers, one obtains a strong indication that symmetrization takes place at about 15 GPa, in excellent agreement with the PBEsol and TCAsol predictions.
Collapse
Affiliation(s)
- Pietro Cortona
- Laboratoire Structures, Propriétés et Modélisation des Solides, Université Paris-Saclay, CentraleSupélec, CNRS UMR 8580, Grande Voie des Vignes, F-92295 Châtenay-Malabry, France
| |
Collapse
|
5
|
|
6
|
Fusè M, Rimoldi I, Cesarotti E, Rampino S, Barone V. On the relation between carbonyl stretching frequencies and the donor power of chelating diphosphines in nickel dicarbonyl complexes. Phys Chem Chem Phys 2017; 19:9028-9038. [PMID: 28304027 PMCID: PMC5436090 DOI: 10.1039/c7cp00982h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 03/05/2017] [Indexed: 11/24/2022]
Abstract
The relation between spectroscopic observables and the detailed metal-ligand bonding features in chelation complexes is addressed using both experimental and state-of-the-art theoretical and computational methods. We synthesized and characterized a set of six nickel dicarbonyl complexes of general formula [Ni(CO)2(PP)], where PP is an atropoisomeric chelating diphosphine ligand. The analysis of the obtained experimental data and the basicity and oxidative potentials of the free ligands suggests a close relation between the donor ability of the chelating ligand and the carbonyl stretching frequencies observed in the complexes. We then use theory to unravel the detailed mechanisms of chelation-bond formation in terms of partial charge flows between the molecular orbitals of the fragments. By extending the promising, recently published natural orbitals for chemical valence/charge displacement (NOCV/CD) analysis scheme we provide a thorough, quantitative description of the several charge fluxes following the metal-ligand bond formation and demonstrate that the carbonyl stretching frequencies in the considered complexes selectively respond to the σ-donation charge flow from the phosphorus lone pairs of the ligands, with the frequency shift being in quantitative correlation with the extent of the ligand-to-metal charge transfer.
Collapse
Affiliation(s)
- Marco Fusè
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy.
| | - Isabella Rimoldi
- Dipartimento di Scienze Farmaceutiche, Università di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Edoardo Cesarotti
- Dipartimento di Scienze Farmaceutiche, Università di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Sergio Rampino
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy.
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy.
| |
Collapse
|
7
|
Su Z, He W, Wang J, Zuo Y, Hu C. Theoretical investigation on donor–acceptor interaction between a carbonyl compound and an N,N′-dioxide–Sc(iii) complex. RSC Adv 2017. [DOI: 10.1039/c7ra12258f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The counterion and substituent on amide of the N,N′-dioxide ligand could affect electrostatic energy (ΔVelstat) as well as orbital energy (ΔEorb) between CH2O and Sc(iii)-based catalyst, adjusting the Lewis acidity of the metal centre.
Collapse
Affiliation(s)
- Zhishan Su
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
| | - Weiying He
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
| | - Junming Wang
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
| | - Yini Zuo
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
| | - Changwei Hu
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
| |
Collapse
|
8
|
Characterization of B-H agostic compounds involved in the dehydrogenation of amine-boranes by group 4 metallocenes. J Mol Model 2016; 22:294. [PMID: 27888405 DOI: 10.1007/s00894-016-3165-z] [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: 07/22/2016] [Accepted: 11/08/2016] [Indexed: 10/20/2022]
Abstract
For over a decade, amine-borane has been considered as a potential chemical hydrogen vector in the context of a search for cleaner energy sources. When catalyzed by organometallic complexes, the reaction mechanisms currently considered involve the formation of β-BH agostic intermediates. A thorough understanding of these intermediates may constitute a crucial step toward the identification of ideal catalysts. Topological approaches such as QTAIM and ELF revealed to be particularly suitable for the description of β-agostic interactions. When studying model catalysts, accurate theoretical calculations may be carried out. However, for a comparison with experimental data, calculations should also be carried out on large organo-metallic species, often including transition metals belonging to the second or the third row. In such a case, DFT methods are particularly attractive. Unfortunately, triple-ζ all electrons basis sets are not easily available for heavy transition metal elements. Thus, a subtle balance should be reached between the affordable level of calculations and the required accuracy of the electronic description of the systems. Herein we propose the use of B3LYP functional in combination with the LanL2DZ pseudopotential for the metal atom and 6-311++G(2d,2p) basis set for the other atoms, followed by a single point using the DKH2 relativistic Hamiltonian in combination with the B3LYP/DZP-DKH level, as a "minimum level of theory" leading to a consistent topological description of the interaction within the ELF and QTAIM framework, in the context of isolated (gas-phase) group 4 metallocene catalysts.
Collapse
|
9
|
Ruiz I, Matito E, Holguín-Gallego FJ, Francisco E, Martín Pendás Á, Rocha-Rinza T. Fermi and Coulomb correlation effects upon the interacting quantum atoms energy partition. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1957-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
10
|
|
11
|
Yahia-Ouahmed M, Tognetti V, Joubert L. Intramolecular halogen bonding: an interacting quantum atoms study. Theor Chem Acc 2016. [DOI: 10.1007/s00214-015-1796-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
12
|
Harrison JA, Nielson AJ, Sajjad MA, Saunders GC, Schwerdtfeger P. Steric and Electronic Manipulation of the Anagostic Interaction in 1-Tetralone Oxime and Imine Complexes of Rhodium(I). Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501122] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
13
|
|
14
|
Jabłoński M. QTAIM-based comparison of agostic bonds and intramolecular charge-inverted hydrogen bonds. J Phys Chem A 2015; 119:4993-5008. [PMID: 25901650 DOI: 10.1021/acs.jpca.5b02041] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Using DFT-based calculations with seven exchange-correlation functionals (BP86, B3LYP, B3PW91, PBE0, TPSSh, M06-L, M06) we have performed comparative studies on α-, β-, γ-, and δ-agostic bonds (ABs) and intramolecular charge-inverted hydrogen bonds (IMCIHBs). Our detailed analysis of values of QTAIM parameters computed at bond (BCP) and ring critical points (RCP) as well as of the curvatures of bond paths tracing agostic bonds and intramolecular charge-inverted hydrogen bonds gives the opportunity to distinguish between both these types of interactions. In the case of molecules with agostic bonds, the BCP is significantly closer to the agostic hydrogen, whereas in systems with IMCIHB the BCP is, instead, somewhat closer to the metal atom. Agostic bonds are characterized by H···M bond paths being straight in the BCP···M section and then highly curved near the agostic hydrogen, whereas in the case of IMCIHB any substantial curvature of BP in the vicinity of hydrogen is not present. Quite the contrary, the significant curvature of BP near the metal atom can be obtained, instead. One can also distinguish IMCIHBs and ABs on the basis of values of bond ellipticity at BCP and the electron density at RCP which are either somewhat (PBE0) or considerably (M06) greater for the latter type of interaction. It has also been shown that, in general, the exchange-correlation functional has small influences on most of QTAIM parameters computed at BCP and RCP. More significant influences have only been obtained for Laplacian of the electron density, some its components, and the bond ellipticity.
Collapse
Affiliation(s)
- Mirosław Jabłoński
- Department of Quantum Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7-Gagarina St., PL-87 100 Toruń, Poland
| |
Collapse
|
15
|
Rivada-Wheelaghan O, Roselló-Merino M, Ortuño MA, Vidossich P, Gutiérrez-Puebla E, Lledós A, Conejero S. Reactivity of coordinatively unsaturated bis(N-heterocyclic carbene) Pt(II) complexes toward H(2). Crystal structure of a 14-electron Pt(II) hydride complex. Inorg Chem 2014; 53:4257-68. [PMID: 24716606 DOI: 10.1021/ic500705t] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The reactivity toward H2 of coordinatively unsaturated Pt(II) complexes, stabilized by N-heterocyclic carbene (NHC) ligands, is herein analyzed. The cationic platinum complexes [Pt(NHC')(NHC)](+) (where NHC' stands for a cyclometalated NHC ligand) react very fast with H2 at room temperature, leading to hydrogenolysis of the Pt-CH2 bond and concomitant formation of hydride derivatives [PtH(NHC)2](+) or hydrido-dihydrogen complexes [PtH(H2)(NHC)2](+). The latter species release H2 when these compounds are subjected to vacuum. The X-ray structure of complex [PtH(IPr)2][SbF6] revealed its unsaturated nature, exhibiting a true T-shaped structure without stabilization by agostic interactions. Density functional theory calculations indicate that the binding and reaction of H2 in complexes [PtH(H2)(NHC)2](+) is more favored for derivatives bearing aryl-substituted NHCs (IPr, 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene and IMes = 1,3-dimesityl-1,3-dihydro-2H-imidazol-2-ylidene) than for those containing tert-butyl groups (I(t)Bu). This outcome is related to the higher close-range steric effects of the I(t)Bu ligands. Accordingly, H/D exchange reactions between hydrides [PtH(NHC)2](+) and D2 take place considerably faster for IPr and IMes* derivatives than for I(t)Bu ones. The reaction mechanisms for both H2 addition and H/D exchange processes depend on the nature of the NHC ligand, operating through oxidative addition transition states in the case of IPr and IMes* or by a σ-complex assisted-metathesis mechanism in the case of I(t)Bu.
Collapse
Affiliation(s)
- Orestes Rivada-Wheelaghan
- Departamento de Química Inorgánica, CSIC and Universidad de Sevilla, Instituto de Investigaciones Químicas (IIQ) , Avda. Américo Vespucio 49, 41092, Sevilla, Spain
| | | | | | | | | | | | | |
Collapse
|
16
|
Tognetti V, Joubert L. Density functional theory and Bader's atoms-in-molecules theory: towards a vivid dialogue. Phys Chem Chem Phys 2014; 16:14539-50. [DOI: 10.1039/c3cp55526g] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
On critical points and exchange-related properties of intramolecular bonds between two electronegative atoms. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.06.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
18
|
Shape entropy’s response to molecular ionization. J Mol Model 2013; 19:1677-83. [DOI: 10.1007/s00894-012-1725-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 12/03/2012] [Indexed: 10/27/2022]
|
19
|
Lein M, Harrison JA, Nielson AJ. Identification of non-classical C–H⋯M interactions in early and late transition metal complexes containing the CH(ArO)3 ligand. Dalton Trans 2013; 42:10939-51. [DOI: 10.1039/c3dt51028j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
20
|
Oliveira BGD. Structure, energy, vibrational spectrum, and Bader's analysis of π⋯H hydrogen bonds and H−δ⋯H+δdihydrogen bonds. Phys Chem Chem Phys 2013; 15:37-79. [DOI: 10.1039/c2cp41749a] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
21
|
Johnson ER, Contreras-García J, Yang W. Density-Functional Errors in Alkanes: A Real-Space Perspective. J Chem Theory Comput 2012; 8:2676-81. [DOI: 10.1021/ct300412g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Erin R. Johnson
- Chemistry and Chemical
Biology, University of California,
Merced, 5200 North Lake Road, Merced, California 95343, United States
| | | | - Weitao Yang
- Department
of Chemistry, Duke University, Durham, North
Carolina 27708, United States and Department of Physics, Faculty of
Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589,
Saudi Arabia
| |
Collapse
|
22
|
Flener Lovitt C, Frenking G, Girolami GS. Donor–Acceptor Properties of Bidentate Phosphines. DFT Study of Nickel Carbonyls and Molecular Dihydrogen Complexes. Organometallics 2012. [DOI: 10.1021/om200456j] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Charity Flener Lovitt
- School
of Chemical Sciences, University of Illinois at Urbana−Champaign, 600 South Mathews
Avenue, Urbana, Illinois 61801, United States
| | - Gernot Frenking
- Fachbereich
Chemie, Philipps-Universität Marburg, Hans Meerwein-Strasse, D-35043 Marburg, Germany
| | - Gregory S. Girolami
- School
of Chemical Sciences, University of Illinois at Urbana−Champaign, 600 South Mathews
Avenue, Urbana, Illinois 61801, United States
| |
Collapse
|
23
|
Tognetti V, Joubert L, Raucoules R, De Bruin T, Adamo C. Characterizing Agosticity Using the Quantum Theory of Atoms in Molecules: Bond Critical Points and Their Local Properties. J Phys Chem A 2012; 116:5472-9. [DOI: 10.1021/jp302264d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Vincent Tognetti
- IRCOF, CNRS UMR 6014 & FR 3038, Université de Rouen et INSA de Rouen, 76821Mont St Aignan, Cedex, France
| | - Laurent Joubert
- IRCOF, CNRS UMR 6014 & FR 3038, Université de Rouen et INSA de Rouen, 76821Mont St Aignan, Cedex, France
| | - Roman Raucoules
- Laboratoire d’Electrochimie,
Chimie des Interfaces et Modélisation pour l’Energie
(UMR 7575), Centre National de la Recherche Scientifique, Chimie ParisTech, 11 rue P. et M. Curie, F-75231 Paris,
Cedex 05, France
- IFP, Direction Chimie et Physico-chimie Appliquées, 1-4 Avenue de Bois
Préau, 92852 Rueil-Malmaison, Cedex, France
| | - Theodorus De Bruin
- IFP, Direction Chimie et Physico-chimie Appliquées, 1-4 Avenue de Bois
Préau, 92852 Rueil-Malmaison, Cedex, France
| | - Carlo Adamo
- Laboratoire d’Electrochimie,
Chimie des Interfaces et Modélisation pour l’Energie
(UMR 7575), Centre National de la Recherche Scientifique, Chimie ParisTech, 11 rue P. et M. Curie, F-75231 Paris,
Cedex 05, France
| |
Collapse
|
24
|
|
25
|
Lein M, Harrison JA, Nielson AJ. Analysis of M···H-Si interactions in [{M(CpSiMe2H)Cl3}2], (M = Zr, Hf, Ti and Mo) complexes. Dalton Trans 2011; 40:10731-41. [PMID: 21927752 DOI: 10.1039/c1dt10630a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
For the d(0) complex [{Zr(CpSiMe(2)H)Cl(3)}(2)] which contains a linear Si-H···Zr interaction across the dimer, DFT calculations are in good agreement with X-ray structures. The BP86 functional shows a slightly stronger interaction than B3LYP but for qualitative purposes either functional is sufficient. QTAIM analysis shows a bond critical point (bcp) for the interaction, a small negative value for the total energy density [H((r))] and the H atomic basin decreases in energy, E(H), and atomic volume compared to the free ligand. NBO analysis showed E(2) for Si-H σ to Zr(dz(2)) donation at 42.8 kcal mol(-1) and a 34% spatial overlap for the interaction consistent with an inverse hydrogen bond. The Wiberg bond index for the interaction is 0.1735 (0.7205 for the Si-H bond), ν((Si-H)) and (1)J((Si-H)) at 2060 cm(-1) and 145.4 Hz compared to 2183 cm(-1) and 172.1 Hz in the free ligand. Using a "synthesis by computation" approach to forming like complexes, similar features were found for [{Hf(CpSiMe(2)H)Cl(3)}(2)]. The titanium complex [{Ti(CpSiMe(2)H)Cl(3)}(2)] does not contain any Si-H···Ti interaction as rotation about the C-Si bond of the ligand occurs to place the Si-H bond hydrogen closer to a terminal chloro ligand across the dimer. An increase in electron density on the metal in the d(2) complex [{Mo(CpSiMe(2)H)Cl(3)}(2)] results in a stronger interaction with a distinct QTAIM analysis bcp [ρ((r)) 0.0448 a.u.], a small negative value for H((r)) and a much reduced H atomic volume. NBO analysis shows E(2) for Si-H σ to Mo(dz(2)) donation at 143.1 kcal mol(-1) and a 29% spatial overlap. Mo(dz(2)) to Si-H σ* donation (back donation) is minimal [E(2) 1.3 kcal mol(-1), ~1% spatial overlap]. The Wiberg bond index is 0.3114 (0.5667 for the Si-H bond), ν((Si-H)) 2015 cm(-1) and (1)J((Si-H)) 120.6 Hz.
Collapse
Affiliation(s)
- Matthias Lein
- School of Chemical and Physical Sciences, Victoria University of Wellington, Kelburn Campus, Wellington 6140, New Zealand
| | | | | |
Collapse
|
26
|
Pudasaini B, Janesko BG. Computational Investigation of Selectivity in Suzuki–Miyaura Coupling of Secondary Alkyl Boranes. Organometallics 2011. [DOI: 10.1021/om200305r] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bimal Pudasaini
- Department of Chemistry, Texas Christian University, Fort Worth, Texas, United States
| | - Benjamin G. Janesko
- Department of Chemistry, Texas Christian University, Fort Worth, Texas, United States
| |
Collapse
|
27
|
Tognetti V, Joubert L. On the Influence of Density Functional Approximations on Some Local Bader’s Atoms-in-Molecules Properties. J Phys Chem A 2011; 115:5505-15. [DOI: 10.1021/jp2031384] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Vincent Tognetti
- IRCOF, CNRS UMR 6014, and FR 3038, Université de Rouen et INSA de Rouen, 76821 Mont St. Aignan Cedex, France
| | - Laurent Joubert
- IRCOF, CNRS UMR 6014, and FR 3038, Université de Rouen et INSA de Rouen, 76821 Mont St. Aignan Cedex, France
| |
Collapse
|
28
|
Tognetti V, Joubert L, Adamo C. Communications: Making density functional theory and the quantum theory of atoms in molecules converse: A local approach. J Chem Phys 2010; 132:211101. [DOI: 10.1063/1.3426312] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
|