Triphenylene-based tris-N-heterocyclic stannylenes

Abstract

Two planar tridentate N-heterocyclic stannylenes are synthesized from the corresponding 2,3,6,7,10,11-hexaamino-triphenylene and Sn[N(TMS)2]2. Multinuclear NMR and absorption spectra of these tris-stannylenes are reported. Molecular structure of the N-benzhydryl-substituted tris-stannylene is also realized.

Recent advances in the chemistry of isolable carbene analogues with group 13–15 elements

“…(4) Recent decades have witnessed the identification of a plethora of bis-or poly-metallylenes, [84][85][86][87][88][89][90][91] stabilized by groups such as naphthyridine diamine (NDI), 92 triphenylene, 93 and ferrocenyl backbone. 94 However, owing to the limited scope of this account, a detailed exploration of these examples will not be undertaken here.…”

Synthesis of Trinuclear Tin(II), Germanium(II), and Aluminum(III) Cyclophane Complexes

“…These compounds are not designed a priori but synthesized from self-assembly reactions, and their nuclearity and metal–metal separation are controlled by the steric demands of the supporting ligands. The latter class comprises multitopic tetrylenes (e.g., N -heterocyclic carbenoids), of which many are used as ligands for transition or other p-block metals . We note that trinuclear species have been isolated as reaction products of di- or monometallic complexes with substrates such as CO 2 and CS 2 , demonstrating the potential for cooperative activation of substrates .…”

Multinuclear Alkali Metal Complexes of a Triphenylene-Based Hexamine and the Transmetalation to Tris(N-heterocyclic tetrylenes) (Ge, Sn, Pb)

“…More recently, a series of NHEs and their transition metal complexes have been reported. − Besides the monocarbenes and tetrylenes, their multiple analogues are also known. For instance, the triphenylene was used as the backbone for tris­(N-heterocyclic carbenes) and corresponding multinuclear metal complexes, − while two examples of tris­(N-heterocyclic stannylene) based on triphenylene were also reported . Nonetheless, tris-NHEs are yet far less explored.…”