A series of organometallic complexes containing an alkynylphosphinegold­(I) fragment and a phenylene–terpyridine moiety connected together by flexible linker have been prepared using the specially designed terpyridine ligands. The compounds were studied crystallographically to reveal that all of them contain a linearly coordinated Au­(I) atom and a free terpyridine moiety. The different orientations of the molecules relative to each other in the solid state determine the multiple noncovalent interactions such as antiparallel ππ stacking, CH−π, and CH–Au, but no aurophilic interactions are realized. The organometallic Au­(I) complexes obtained show fluorescence in the solution and dual singlet–triplet emission in the solid state. This means that their photophysical behavior is determined by both intermolecular lattice-defined interactions and Au­(I) atom introduction. Density functional theory computational analysis supported the assignment of emission to intraligand electronic transitions only inside the phenylene–terpyridine part with no Au­(I) involved. In addition, a study of the nature of the excited states for the “dimer” with an antiparallel orientation of the terpyridine fragment showed that this orientation leads to the generation of abstracted singlet and triplet states, lowering their energy in comparison with the monomer complex. Thus, the complexes obtained can be qualified as examples of Au­(I)-containing organometallic aggregation-induced-emission luminogens.

Two families of hetero- and homoleptic mononuclear Au(I) complexes with alkynyl ligands containing azo (XN) or stilbene (XC) group have been prepared and characterized by spectroscopic methods and single crystal...

CuAAC (Cu catalyzed azide-alkyne cycloaddition) click-reaction is a simple and powerful method for the post-synthetic modification of organometallic complexes of transition metals. This approach allows the selective introduction of additional donor sites or functional groups to the periphery of the ligand environment. This is especially important if a metalloligand with free donor sites, which are of the same nature as the primary site for the coordination of the primary metal, has to be created. The concept of post-synthetic modification of organometallic complexes by click-reaction is relatively recent and the currently available experimental material does not yet allow us to identify trends and formulate recommendations to address specific problems. In the present study, we have applied the CuAAC reaction for the post-synthetic modification of diimine mononuclear complexes Re(I), Pt(II) and Ir(III) with C≡C bonds at the periphery of the ligand environment and demonstrated that click-chemistry is a powerful tool for the tunable chemical post-synthetic modification of coordination compounds.