Zwitterionic CS2 Adducts of Bis(dialkylphosphino)amines: Syntheses, Spectroscopy, and Structures*
Diane A. Dickie A , Raymond P. Ulibarri-Sanchez
+ Author Affiliations
- Author Affiliations
A Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM 87131, USA.
B Advanced Materials Laboratory, Sandia National Laboratories, Albuquerque, NM 87106, USA.
C Corresponding author. Email: rakemp@unm.edu
Australian Journal of Chemistry 68(3) 351-356 https://doi.org/10.1071/CH14535
Submitted: 31 August 2014 Accepted: 19 September 2014 Published: 7 November 2014
Abstract
Both bis(diisopropylphosphino)amine and bis(di-t-butylphosphino)amine react with CS2 to give bright red zwitterionic adducts of the form R2P(CS2)NP(R2)H (R = iPr or tBu). The P–H tautomer is the exclusive species present in solution, and there is no evidence of CS2 lability. The tautomeric hydrogen can undergo exchange with deuterium in protic solvents such as CD3OD. The products were characterized by single-crystal X-ray diffraction, IR and multinuclear (1H, 2H, 13C, 31P) NMR spectroscopies.
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