Triple hydrogen atom abstraction from Mn-NH3 complexes results in cyclophosphazenium cations

Brian J. Cook, Samantha I. Johnson, Geoffrey M. Chambers, Werner Kaminsky, R. Morris Bullock

Research output: Contribution to journal › Article

Abstract

All hydrogen atoms of the NH3 in [Mn(depe)2(CO)(NH3)]+ are abstracted by 2,4,6-tri-tert-butylphenoxyl radical, resulting in the isolation of a rare cyclophosphazenium cation, [(Et2P(CH2)2PEt2)N]+, in 76% yield. An analogous reaction is observed for [Mn(dppe)2(CO)(NH3)]+. Computations suggest insertion of NHx into a Mn-P bond provides the thermodynamic driving force. Contextualization of this reaction provides insights on catalyst design and breaking strong N-H bonds.

Original languageEnglish
Pages (from-to)14058-14061
Number of pages4
JournalChemical Communications
Volume55
Issue number93
DOIs
Publication statusPublished - Jan 1 2019

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Carbon Monoxide
Cations
Hydrogen
Positive ions
Thermodynamics
Atoms
Catalysts

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Triple hydrogen atom abstraction from Mn-NH3 complexes results in cyclophosphazenium cations. / Cook, Brian J.; Johnson, Samantha I.; Chambers, Geoffrey M.; Kaminsky, Werner; Bullock, R. Morris.

In: Chemical Communications, Vol. 55, No. 93, 01.01.2019, p. 14058-14061.

Research output: Contribution to journal › Article

Cook, BJ, Johnson, SI, Chambers, GM, Kaminsky, W & Bullock, RM 2019, 'Triple hydrogen atom abstraction from Mn-NH3 complexes results in cyclophosphazenium cations', Chemical Communications, vol. 55, no. 93, pp. 14058-14061. https://doi.org/10.1039/c9cc06915a
Cook BJ, Johnson SI, Chambers GM, Kaminsky W, Bullock RM. Triple hydrogen atom abstraction from Mn-NH3 complexes results in cyclophosphazenium cations. Chemical Communications. 2019 Jan 1;55(93):14058-14061. https://doi.org/10.1039/c9cc06915a
Cook, Brian J. ; Johnson, Samantha I. ; Chambers, Geoffrey M. ; Kaminsky, Werner ; Bullock, R. Morris. / Triple hydrogen atom abstraction from Mn-NH3 complexes results in cyclophosphazenium cations. In: Chemical Communications. 2019 ; Vol. 55, No. 93. pp. 14058-14061.
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