Display omitted •Silver (I) complexes with derivatives of closo-borate anions were synthesized.•The interaction of Ag(Ph3P)3NO3 with derivatives of closo-borate anions was studied.•Methods for obtaining boron-containing silver (I) complexes have been developed. In this work, we synthesized silver(I) complexes with monosubstituted derivatives of the decahydro-closo-decaborate and dodecahydro-closo-dodecaborate anions of the composition Ag(PPh3)4B10H9OC5H10 (1), Ag(PPh3)4B10H9O2C4H8 (2), (Ph3P)2Agμ–B12H11ClAg(Ph3P)2 (3), and (Ph3P)2Agμ–B10H9COOMeAg(Ph3P)2 (4). These compounds were obtained by the interaction between the tetrabutylammonium salts of the corresponding anions B10H9OC5H10−, B10H9O2C4H8−, B10H9Cl2−, and B10H9COOCH32− with tris(triphenylphosphine)silver (I) nitrate in the presence of triphenylphosphine. The complexes synthesized were investigated using elemental analysis, IR, 1H and 13C NMR spectroscopies, and X-ray diffraction.