catena-Poly[[bis-(dimethyl-ammonium) [cadmate(II)-bis-(μ-1,1':4',1''-terphenyl-3,3''-dicarboxyl-ato)]] dimethyl-formamide disolvate].

In the title compound, {(C(2)H(8)N)(2)[Cd(C(20)H(12)O(4))(2)]·2C(3)H(7)NO}(n), the Cd(II) ion lies on a twofold rotation axis and is in a distorted octa-hedral CdO(6) environment, defined by four O atoms of two μ(2)-coordinated 1,1':4',1''-terphenyl-3,3''-dicarboxyl-ate (DCT) ligands and two O atoms of two μ(1)-coordinated DCT ligands. Both types of DCT ligands act as bridging, forming a one-dimensional polymeric structure propagating parallel to [10].