Citation: Qi ZUO, Long-Fei MA. Synthesis and crystal structure of the charge transfer complexes of arylthiotetrathiafulvalenes and iodine[J]. Chinese Journal of Inorganic Chemistry, ;2023, 39(10): 1869-1876. doi: 10.11862/CJIC.2023.156 shu

Synthesis and crystal structure of the charge transfer complexes of arylthiotetrathiafulvalenes and iodine

Qi ZUO ,
Long-Fei MA ^,

Department of Criminal Science and Technology, Henan Police College, Zhengzhou 450046, China

Corresponding author: Long-Fei MA, malongfei@hnp.edu.cn
Received Date: 2 May 2023
Revised Date: 13 June 2023

Figures(5)

Three charge-transfer (CT) complexes (1^+·)(I₃)·I₂, (2^+·)(I₅)·I₂, and (3²⁺)(I₃)₂ have been prepared via solvent evaporation method comprising arylthio - substituted tetrathiafulvalene derivatives (Ar-S-TTF) and iodine. Single crystal X-ray diffraction, UV-Vis spectrum, and cyclic voltammetry were used to characterize the complexes. Complex (1^+·)(I₃)·I₂ crystallizes in the C2/c space group. 1^+· takes the chair configuration. The asymmetric unit contains half of 1^+· ions, half of I₃^- ions, and half of I₂ molecules. The charge transfer between compound 1 with iodine is consistent in the complex in solution. Complex (2^+·)(I₅)·I₂ crystallizes in the P1 space group, and 2^+· takes the chair conformation. The asymmetric unit contains one 2^+· ion, one I₅^- ion, and one I₂ molecule. Complex (3²⁺)(I₃)₂ crystallizes in the Pbca space group, and 3²⁺ takes the unique planar configuration. The asymmetric unit contains one 3²⁺ ion and two I₃^- ions. Compounds 2 and 3 exhibit different charge transfers with iodine in solution and the complex. The iodine components in the complexes show various structures including the 1D chain of I₃^- or I₅^-/I₂, and 2D iodine networks comprised of I₂ and I₃^-.
- tetrathiafulvalene,
- iodine,
- crystal structure,
- charge transfer complexes
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