Supramolecular Assembly of Luminescent Gold(I) Alkynylcalix[4]crown‐6 Complexes with Planar η²,η²‐Coordinated Gold(I) Centers

Abstract

Au⋅⋅⋅Au interactions between the gold(I) centers arranged in a planar rhomboidal array in a novel class of luminescent tetranuclear gold(I) alkynylcalix[4]crown‐6 complexes (see picture) give rise to rich luminescence behavior, with long‐lived excited states and relatively high luminescence quantum yields.

Synthesis and structural characterization of isolable phosphine coinage metal π-complexes

“…5). In agreement with previous calculations, the Au(I)-alkene bond is longer than the (10), several trigonal planar Au(I) complexes coordinated to organometallic 1,4-diynes (11,12), two trigonal planar strained cycloheptyne-Au(I) complexes (13), and a supramolecular complex containing a linear ( 2 -alkyne)-Au-( 2 -alkyne) moiety (14). For a linear N-heterocyclic carbene-Au-( 2 -alkyne) that has been characterized by NMR and IR spectroscopy, see ref.…”

Homo‐ and Heteropolynuclear Platinum Complexes Stabilized by Dimethylpyrazolato and Alkynyl Bridging Ligands: Synthesis, Structures, and Luminescence

“…This fact concerning the structure, that is in line with the lower (C C) vibration observed in the IR spectra (ñ = 1948 in complex 4 as opposed to 2039 cm À1 in complex 3), clearly points to a stronger Au-h 2 (acetylenic) bonding interaction, contrasting with the relatively low number of reported complexes of type bis(h 2 -alkynyl)Au. [103] The PtÀC, [67][68][69][70][71][72][79][80][81] PtÀN, [52,53,[73][74][75][76][77][78] and MÀN bond lengths [37, 38, 43-50, 52, 54, 55, 64, 92, 105-111] are similar to those observed in related pyrazolate complexes.…”

Remarkable Luminescence Behaviors and Structural Variations of Two-Coordinate Gold(I) Complexes

“…Interesting polymeric gold(I) complexes prepared by Puddephatt and coworkers have also not received their share of attention here [77][78][79]. Likewise, significant work on luminescent gold-alkynyl complexes of Yam and coworkers has not fallen into the purview of the work covered in this review [80,81]. Nor have we been able to review the remarkable mixed-metal Au(I) complexes prepared by Catalano and others [82,83].…”