Metal‐Dependent Coordination Modes Displayed by Macrocyclic Polycarbene Ligands

Abstract

Carbene–metal molecular box: Two imidazolium macrocycles, H2-1(X)2 and H4-2(PF6)4, act as precursors for the formation of poly(NHC) ligands. The carbene ligands display metal-dependent conformations in forming organometallic complexes. In particular, they are capable of stabilizing boxlike structures such as syn-[Ag2(1)2]2+ and [Ag4(2)2]4+ when exposed to linearly coordinated silver cations. In contrast, a monomeric species featuring a C-Pd-C angle of about 90° is formed between 1 and PdII. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.