The synthesis and characterization of a tris(alkyne) ligand, tris[2-(trimethylsilyl)ethynyl-4--butylbenzyl]amine (), and its silver(I) hexafluorophosphate complex, , are reported. The solid-state structure and luminescence properties of indicate relatively strong silver(I)-alkyne interactions between the metal cation and . No significant changes in the bond angles or lengths were observed upon metalation of with Ag, indicating a relatively unstrained ligand-metal motif. The luminescence properties of and are also disclosed, showing attenuation in the luminescence intensity upon Ag metalation, with Stokes shifts of ∼3700 and ∼3200 cm for and , respectively. The lifetimes of (τ = 8.383 ± 0.053 ns and τ = 4.665 ± 0.061 ns) were longer than those of (τ = 6.708 ± 0.085 ns and τ = 3.689 ± 0.025 ns), possibly indicating multiple conformers of in solution. This new silver alkyne platform has potential applications in studies of catalysis, luminescent compounds, and sensing.
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