Two novel extended metallohelical complex structures based on the bis(benzimidazole) ligand L1, (L1 = 1,2-bis((1H-benzo[d]imidazol-2-yl)methyl)benzene), namely {[L1Cd2(SCN)2(CH2)4(COO)2(CH3OH)2]·2CH3OH} (1), {[L1Cd(CH2)4(COO)2]·CH3CH2OH}n (2) have been synthesized and characterized by IR spectroscopy, X-ray Powder Diffraction (PXRD), UV-vis diffuse reflectance spectra, single-crystal X-ray diffraction and fluorescence in the solid state. Binuclear structure for 1, Crystal data: triclinic P-1, a = 9.5222(3), b = 10.9280(4), c = 14.2859(6), α= 108.528(4)°, β= 95.878(3)°, γ= 96.875(3)°, V = 1383.72(9) Å3, Z = 2, Dcalc = 1.548 g cm-3; 1D chain structure for 2, Crystal data: triclinic Pbc21, a = 11.6609(7), b = 14.9534(11), c = 16.2444(9), α= 90°, β= 90°, γ= 90 °, V = 2832.5(3) Å3, Z = 4, Dcalc = 1.503 g cm-3. In addition, the optical band gap, photocatalytic and adsorption of compounds 1-2 were also investigated.
