Half-sandwich iron(II) complexes with protic acyclic diaminocarbene ligands: Synthesis, deprotonation and metalation reactions

Fernando Javier Gomez-Ruiz, Lucia Garcia , Marilín Vivanco, Daniel Sol, Santiago García-Granda

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A variety of half-sandwich iron(ii) complexes with diprotic acyclic diaminocarbene ligands (pADCs) have been obtained by reaction of the cationic complexes [Fe(Cp)(CO)2(CNR)]+ and [Fe(Cp)(CO)(CNR)2]+ with methylamine, and their acid-base behaviour was studied, revealing an easy reversible deprotonation reaction of both N-H moieties of the carbene ligands. The deprotonation process is frequently followed by a nucleophilic attack of the nitrogen atom on a vicinal carbonyl or isocyanide ligand, affording the corresponding metallacycles. Metalation of one or two N-H groups of the pADC ligands can be accomplished by reaction of the carbene complexes with either [AuCl(PPh3)] or [Ru(p-cym)Cl2]2 in the presence of KOH or LiHMDS as deprotonating agents. A number of Fe(ii)/Au(i) and Fe(ii)/Ru(ii) heterometallic complexes have been prepared in this way, some of them formally containing unique metalla-N-heterocyclic carbene ligands.

Original languageEnglish
Pages (from-to)10387-10398
Number of pages12
JournalDalton Transactions
Volume46
Issue number31
DOIs
Publication statusPublished - 21 Aug 2017

ASJC Scopus subject areas

  • Inorganic Chemistry

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