Mixed phosphine/carbonyl derivatives of heterobimetallic copper–iron and copper–tungsten catalysts

Noel J. Leon, Hsien Cheng Yu, Thomas J. Mazzacano, Neal Mankad

Research output: Contribution to journalArticle

Abstract

Evolution of dihydrogen was observed from reactions of protic metal–hydride complexes FeCp(CO)(PR3)H and WCp(CO)2(PR3)H with hydridic (NHC)CuH complexes, providing access to several heterobimetallic (NHC)Cu–FeCp(CO)(PR3) and (NHC)Cu–WCp(CO)2(PR3) complexes that are the mixed phosphine/carbonyl derivatives of previously studied catalysts for C–H borylation (NHC = N-heterocyclic carbene). The new complexes were characterized by multinuclear NMR spectroscopy, FT-IR spectroscopy, and in some cases X-ray crystallography. In one case, a (NHC)Cu(µ2-H)2FeCp(PPh3) complex was structurally characterized as the decomposition product of an unstable (NHC)Cu–FeCp(CO)(PPh3) derivative. Preliminary trials in C–H borylation catalysis are reported, including measurable activity under photochemical conditions.

LanguageEnglish (US)
Pages116-123
Number of pages8
JournalPolyhedron
Volume157
DOIs
StatePublished - Jan 1 2019

Fingerprint

phosphine
Tungsten
Carbon Monoxide
phosphines
Copper
tungsten
Iron
Derivatives
iron
catalysts
copper
Catalysts
metal hydrides
X ray crystallography
carbenes
Hydrides
spectroscopy
Catalysis
Nuclear magnetic resonance spectroscopy
crystallography

Keywords

  • Borylation
  • Copper
  • Heterobimetallic
  • Iron
  • Tungsten

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Mixed phosphine/carbonyl derivatives of heterobimetallic copper–iron and copper–tungsten catalysts. / Leon, Noel J.; Yu, Hsien Cheng; Mazzacano, Thomas J.; Mankad, Neal.

In: Polyhedron, Vol. 157, 01.01.2019, p. 116-123.

Research output: Contribution to journalArticle

Leon, Noel J. ; Yu, Hsien Cheng ; Mazzacano, Thomas J. ; Mankad, Neal. / Mixed phosphine/carbonyl derivatives of heterobimetallic copper–iron and copper–tungsten catalysts. In: Polyhedron. 2019 ; Vol. 157. pp. 116-123.
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