Isolation of a hexanuclear chromium cluster with a tetrahedral hydridic core and its catalytic behavior for ethylene oligomerization

Ahmed Alzamly, Sandro Gambarotta, Ilia Korobkov, Muralee Murugesu, Jennifer J.H. Le Roy, Peter H.M. Budzelaar

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

A chromium complex [2-(NHCH2PPh2)C5H 4N]CrCl3·THF2 (1) of the ligand PyNHCH2PPh2 has been synthesized, characterized, and examined for its catalytic behavior toward ethylene oligomerization. When complex 1 was treated with (i-Bu)3Al, an unprecedented divalent polyhydride chromium cluster μ,κ12, κ3-N,N,P-{[2-(NCH2PPh2)C 5H4N]Cr(μ-H)}4[(μ-Cl)Cr(μ-Cl)Al(i-Bu) 2Cl]2 (2) was obtained. The complex contains a Cr 4H4 core, which is expected to be diamagnetic, and which remains coordinated to two additional divalent high-spin Cr atoms via bridging interactions. Two aluminate residues remain bonded to the peripheral chromium atoms. The structure, magnetism, and electronic configuration are herein discussed.

Original languageEnglish
Pages (from-to)6073-6081
Number of pages9
JournalInorganic Chemistry
Volume53
Issue number12
DOIs
Publication statusPublished - Jun 16 2014
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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