Coordination Assembling And Molecular Recognition Of Sulfur-Rich Compounds

Tetrathiafulvalene (TTF) and its numerous derivatives have been studied intensively in the field of supramolecular and macromolecular chemistry as well as the area of molecular solids. In this paper, [(CuI)(C12H12O4S6)]2 (1) was synthesized and characterized by using single crystal X-ray diffraction method. Two Cu(I) ions were double bridged by two iodine atoms and coordinated by dithioether of the sulful-rich ligand. A 3D structure was formed through S ... S ,H ... O,H ... I contacts between the dimmers. Complexes (CuX)(C7H6O4S3)] - (X=I(2), Br(3), Cl(4)), in which the ligand coordinating via thiocarbonyl group, were synthesized and the structure of 2 was also decided by single crystal X-ray diffraction. 1-D polymeric ladder-chains of CuI were found in 2 and these chains are further assembled by S...S ,H...0 contacts. In addition, all these complexes were characterized by elemental analysis, IR, UV spectra and electrochemistry. Moreover, A new type of redox switchable ligand system, C10H6O4S6Na2, was studied by electrochemistry. The responsibility of the salt to Zn2+, La3+ and H+ cations and electro-chemical mechanism has been discussed. This complex system may have an applied foreground as chemical sensor.