N-Heterocyclic Carbene-Pnictogen Adducts and Their Use as Ligands in Transition Metal Chemistry
29/05/2023
Seminar room
11:30
Prof. Matthias Tamm Technische Universität Braunschweig
The Laboratory for Organic and Inorganic Chemistry
N-Heterocyclic Carbene-Pnictogen Adducts and Their Use as Ligands in
Transition Metal Chemistry
Matthias TAMM
Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig,
Germany; m.tamm@tu-bs.de, https://www.tu-braunschweig.de/iaac
Soon after the advent of stable N-heterocyclic carbenes (NHC),1 pnictinidene adducts such
as (NHC)ER (E = P, As; R = Ph, CF3, C6F5) were among the first carbene complexes of p-block
elements to be prepared directly from free carbenes and suitable main-group compounds.2
Our group has contributed to this field by preparation of NHC-supported phosphinidenes
and arsinidenes (NHC)ER (E = P, As; R = SiMe3, H) through reaction of 2,2-difluoroimidazolines
(NHC)F2 (NHC = IDipp, IMes) with E(SiMe3)3 (E = P, As; Scheme 1).3,4 These complexes were
used for the preparation of transition metal complexes of the type [(NHC)EMLn]3,5–7 and for
the preparation of heteroleptic dicarbene-dielement species of the type[(NHC)EE’(NHC)] (E,
E’ = P, As).8–10 Along these lines, recent applications of the novel (NHC)E-transfer reagents in
transition metal and main-group element chemistry and potential applications in
homogeneous catalysis will be discussed.11,12
References