Reactivity of (Triphos)FeBr2(CO) towards sodium borohydrides

Tufan K. Mukhopadhyay, Thomas L. Groy, Nathan C. Smythe, John C. Gordon, Ryan J. Trovitch

Research output: Contribution to journalArticle

Abstract

The addition of CO to (Triphos)FeBr2 (Triphos = PhP(CH2CH2PPh2)2) resulted in formation of six-coordinate (Triphos)FeBr2(CO). This coordination compound was found to have cis-bromide ligands and a mer-Triphos ligand by single crystal X-ray diffraction. Once characterized, the reactivity of this compound toward NaEt3BH and NaBH4 was investigated. Adding 1 eq. of NaEt3BH to (Triphos)FeBr2(CO) resulted in formation of (Triphos)FeH(Br)(CO), while the addition of 2.2 eq. afforded previously described (Triphos)Fe(CO)2. In contrast, adding 2.2 eq. of NaBH4 to (Triphos)FeBr2(CO) resulted in carbonyl dissociation and formation of diamagnetic (Triphos)FeH(η2-BH4), which has been structurally characterized. Notably, efforts to prepare (Triphos)FeH(η2-BH4) following 2.2 eq. NaBH4 addition to (Triphos)FeBr2 were unsuccessful. The importance of these observations as they relate to previously reported (Triphos)Fe reactivity and recent developments in Fe catalysis are discussed.

Original languageEnglish
Pages (from-to)2038-2046
Number of pages9
JournalJournal of Coordination Chemistry
Volume69
Issue number11-13
DOIs
Publication statusPublished - Jul 2 2016

Keywords

  • Borane ligands
  • Coordination compounds
  • Hydrides
  • Iron
  • Triphos

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Reactivity of (Triphos)FeBr<sub>2</sub>(CO) towards sodium borohydrides'. Together they form a unique fingerprint.

  • Cite this