Electrostatics Generated by a Supramolecular Capsule Stabilizes the Transition State for Carbon–Carbon Reductive Elimination from Gold(III) Complex
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
Tetrahedral assemblies of stoichiometry M4L6have been proven to catalyze a range of chemical reactions including the carbon-carbon reductive elimination reaction from transition metals such as gold. Here, we perform quantum chemical calculations of Gold(III) transition metal complexes in vacuum, and encapsulated in Ga4L612- or Si4L68- assemblies within both a reaction field continuum solvent and in an aqueous molecular environment with counterions, to rationalize the rate enhancements observed experimentally for the reductive elimination reaction. We find that the Ga4L612- assembly lowers the energy barrier of the reaction compared to Si4L68-, which is consistent with kinetic trends observed experimentally. We have determined that the primary factor for catalytic rate acceleration stems from the electrostatic environment emanating from the Ga4L612- capsule as opposed to the water or counterions.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1532332
- Journal Information:
- Journal of Physical Chemistry Letters, Vol. 9, Issue 14; ISSN 1948-7185
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Interplay of water and a supramolecular capsule for catalysis of reductive elimination reaction from gold
|
journal | January 2020 |
Gold‐Catalyzed Cross‐Coupling Reactions: An Overview of Design Strategies, Mechanistic Studies, and Applications
|
journal | December 2019 |
Electrostatic decoupling of periodic images of plane‐wave‐expanded densities and derived atomic point charges
|
journal | November 1995 |
Interplay of Water and a Supramolecular Capsule for Catalysis of Reductive Elimination Reaction from Gold | preprint | January 2019 |
Similar Records
Catalytic Deprotection of Acetals In Strongly Basic Solution Usinga Self-Assembled Supramolecular 'Nanozyme'
Different and Often Opposing Forces Drive the Encapsulation and Multiple Exterior Binding of Charged Guests to a M 4 L 6 Supramolecular Vessel in Water