A tetranuclear silver(I) cluster, [Ag(2-Hmba)(PPh3)](4)(.)5CHCl(3)-0.5C(2)H(5)OH 1 (2-H(2)mba = 2-mercaptobenzoic acid), was prepared using the silver(I)-oxygen bonding precursor [Ag-2(R-Hpyrrld)(S-Hpyrrld)] (H(2)pyrrld = 2-pyrrolidone-5-carboxylic acid), PPh3 and 2-H(2)mba in an organic solvent. The crystal structure of 1 was composed of a racemic mixture of a propeller cluster having three "leaves" constructed with three Ag(mu(3)-S)(mu(2)-S)P units and one A,G(mu(2)-S)(3)P unit. The Hpyrrld(-) ligand in the precursor plays an important role in the formation of 1, although this ligand disappeared from the product.