Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Reactive metallocene cations as sensitive indicators of gas-phase oxygen and water

Author affiliations

Abstract

Analysis of highly reactive compounds at very low concentration in solution using electrospray ionization mass spectrometry requires the use of exhaustively purified solvents. It has generally been assumed that desolvation gas purity needs to be similarly high, and so most chemists working in this space have relied upon high purity gas. However, the increasing competitiveness of nitrogen generators, which provide gas purity levels that vary inversely with flow rate, prompted an investigation of the effect of gas-phase oxygen on the speciation of ions. The most reactive species studied, the reduced titanium complex [Cp2Ti(NCMe)2]+[ZnCl3] and the olefin polymerization pre-catalyst [Cp2Zr(μ-Me)2AlMe2]+[B(C6F5)4], only exhibited detectable oxidation when they were rendered coordinatively unsaturated through in-source fragmentation. Computational chemistry allowed us to find the most plausible pathways for the observed chemistry in the absence of observed intermediates. The results provide insight into the gas-phase oxidation or hydrolysis of these reactive species.

Graphical abstract: Reactive metallocene cations as sensitive indicators of gas-phase oxygen and water

Back to tab navigation

Supplementary files

Article information


Submitted
03 Mar 2020
Accepted
30 Apr 2020
First published
30 Apr 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

Reactive metallocene cations as sensitive indicators of gas-phase oxygen and water

A. Joshi, S. Donnecke, O. Granot, D. Shin, S. Collins, I. Paci and J. Scott McIndoe, Dalton Trans., 2020, Advance Article , DOI: 10.1039/D0DT00798F

Social activity

Search articles by author

Spotlight

Advertisements