Carboxylate Ligand-supported Ag n (n=21 and 24) Alkynyl Clusters Induced by Single/Double Carbonate Ions.

Structural transformation is important for the study of silver cluster compounds, in which controlled synthesis of their shapes and sizes via anion template-driven is one key scientific question. In this work, the CO anion templates were captured by the [ BuC≡CAg] system under the stimulation induced by carboxylate ligand CF COO /PhCOO , and two silver alkynyl clusters [(CO )@Ag ( BuC≡C) (CF COO) (H O)]⋅DMF⋅2CH Cl (1) and [(CO ) @Ag ( BuC≡C) (PhCOO) ]⋅CH OH⋅4DMF (2) have been successfully isolated and charactered. With the increase of the number of CO templates from single to double, the outer silver atoms from twenty-one to twenty-four, accompanied by the growth of the cluster skeleton from 9.8 Å ×6.9 Å of the (CO )@Ag unit to 10.5 Å ×7.3 Å of the (CO ) @Ag unit. In addition, the syntheses, structures, photocurrent responses, cyclic voltammetry characteristics, luminescence, and photodegradation of compounds 1 and 2 have been studied.