Pyrazolate phenylethynide: direct exchange of the anionic bridging ligand in a cyclic trinuclear silver complex

Cyclic trinuclear Ag( i ) pyrazolate interacts with phenylacetylene forming a mix-ligand complex in which one pyrazolate ligand is changed to phenylethynide. The C&z.tbd;C − fragment coordinates only to two silver( i ) atoms via one carbon atom demonstrating unique μ 2 -η 1 σ-coordination with c...

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Published in:Chemical communications (Cambridge, England) England), 2024-01, Vol.6 (7), p.847-85
Main Authors: Titov, Aleksei A, Smol'yakov, Alexander F, Chernyadyev, Andrey Yu, Godovikov, Ivan A, Filippov, Oleg A, Shubina, Elena S
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Summary:Cyclic trinuclear Ag( i ) pyrazolate interacts with phenylacetylene forming a mix-ligand complex in which one pyrazolate ligand is changed to phenylethynide. The C&z.tbd;C − fragment coordinates only to two silver( i ) atoms via one carbon atom demonstrating unique μ 2 -η 1 σ-coordination with close Ag-C bond lengths and Ag-C-C angles. The complex exhibits blue emission under UV irradiation. Cyclic trinuclear silver complex interacts with phenylacetylene in the absence of proton abstractors via a formal anionic bridging ligand exchange reaction, forming unique μ 2 -η 1 σ-coordination of a terminal carbon atom with two Ag ions.
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc05659g