Two novel 3D network coordination polymers [Mn(H2O)(ina){M(CN)(2)}]center dot H2O (ina = isonicotinato, M = Ag (1) or Au (2)) have been synthesized and characterized crystallographically and magnetically. In both complexes, the coordination geometries of the Mn-II atoms have MnN3O3 octahedral coordination built up by one tridentate ina ligand, one H2O molecule, and two mu-[M(CN)(2)](-) units. SQUID data show weak anti-ferromagnetic interactions among the Mn atoms bridged by the ina ligands in 1 and 2.