Computational design of a pincer phosphinito vanadium ((OPO)V) propane monoxygenation homogeneous catalyst based on the reduction-coupled oxo activation (ROA) mechanism
Abstract
We propose the vanadium bis(2-phenoxyl)phosphinite pincer complex, denoted (OPO)V, as a low temperature water-soluble catalyst for monoxygenation of propane to isopropanol with functionalization and catalyst regeneration using molecular oxygen. We use DFT study to predict that the barrier for (OPO)V to activate the secondary hydrogen of propane is ΔG‡ = 25.2 kcal/mol at 298K, leading to isopropanol via the new reduction-coupled oxo activation (ROA) mechanism. We then show that reoxidation by dioxygen to complete the cycle is also favorable with ΔG‡ = 6.2 kcal/mol at 298K. We conclude that (OPO)V represents a promising homogeneous catalyst for the monoxygenation of propane and other alkanes (including ethane), warranting experimental validation.
Additional Information
© 2016 American Chemical Society. Received: September 29, 2016; Revised: November 16, 2016; Published: November 28, 2016. This research was supported by NSF (CHE-1214158).Attached Files
Accepted Version - acscatal_2E6b02781.pdf
Supplemental Material - cs6b02781_si_001.pdf
Files
Name | Size | Download all |
---|---|---|
md5:72a1787cab04f5ce638688fda50e1cfa
|
1.4 MB | Preview Download |
md5:ab023f3343a496ad316624a431529c33
|
621.7 kB | Preview Download |
Additional details
- Eprint ID
- 72366
- DOI
- 10.1021/acscatal.6b02781
- Resolver ID
- CaltechAUTHORS:20161129-090636992
- CHE-1214158
- NSF
- Created
-
2016-11-29Created from EPrint's datestamp field
- Updated
-
2021-11-11Created from EPrint's last_modified field