Timothy Carroll

Timothy Carroll
2016 Mellichamp Sustainability Fellow

Research

The heterogeneous vanadium phosphate oxide catalyst (VPO) is one of the few industrial examples of an abundant first row transition metal performing C-H bond activation, and is used for the 14 electron conversion of butane into maleic anhydride. Originally it was assumed that the C-H activation step occurred at the V=O bond, however recent theoretical studies have shown that the P=O linkage is actually responsible through resonance communication to the VIV-VV redox couple (Figure 1).1 Our research aims to investigate the resonance communication between redox active transition metals and main group elements as it may be crucial to explaining the C-H activation of the VPO catalyst. We plan to conduct a systematic synthetic study of “wiring” abundant redox active metals to main group elements by using resonance stabilized guanidine ligands as bridges. 

1. Cheng, M.J.; Goddard, W. A., J. Am. Chem. Soc. 2013, 135, 4600-4603

Advisor:  Gabriel Menard