Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.014 Å; R factor = 0.045; wR factor = 0.080; data-to-parameter ratio = 14.5.The title Ag I coordination polymer, [Ag(C 15 H 14 NS 2 )] n , was synthesized by a solvothermal reaction of AgNO 3 with sodium N,N-dibenzyldithiocarbamate in a methanol solution. The compound displays a helical structure and each Ag I ion is fourcoordinated by four S atoms from two dithiocarbamate ligands and can be described as a distorted tetrahedral configuration. While the Ag I ions are bridged by both S atoms of the dithocarbamate group to form the polymeric structure, the AgÁ Á ÁAg distance of 3.0633 (11) Å suggests weaker metal bonding between Ag I ions.