Reactivity studies of pincer bis-protic N-heterocyclic carbene complexes of platinum and palladium under basic conditions

David C Marelius; Curtis E Moore; Arnold L Rheingold; Douglas B Grotjahn

doi:10.3762/bjoc.12.126

Reactivity studies of pincer bis-protic N-heterocyclic carbene complexes of platinum and palladium under basic conditions

Beilstein J Org Chem. 2016 Jun 28:12:1334-9. doi: 10.3762/bjoc.12.126. eCollection 2016.

Authors

David C Marelius¹, Curtis E Moore², Arnold L Rheingold², Douglas B Grotjahn¹

Affiliations

¹ Department of Chemistry and Biochemistry, San Diego State University, San Diego, CA 92182-1030, USA.
² Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093-0358, USA.

Abstract

Bis-protic N-heterocyclic carbene complexes of platinum and palladium (4) yield dimeric structures 6 when treated with sodium tert-butoxide in CH2Cl2. The use of a more polar solvent (THF) and a strong base (LiN(iPr)2) gave the lithium chloride adducts monobasic complex 7 or analogous dibasic complex 8.

Keywords: 15N NMR spectroscopy; NHC; palladium; platinum; protic N-heterocyclic carbene.