Crystal Structure and Electrochemical and Charge Transfer Properties in Redox-Active Coordination Polymers Based on a Truncated Tetrathiafulvalene Linker

Two new tetrathiafulvalene-based coordination polymers (CPs), Zn-m-TTFTB ([Zn­(m-TTFTB)0.5(CH2CH3OH)­(H2O)] n ) and Cd-m-TTFTB ({[Cd4(m-H2TTFTB)4(CH2CH3OH)2(H2O)10]­(DMF)2(CH2CH3OH)} n ) (m-H4TTFTB = m-tetrathiafulvalene tetrabenzoate), were synthesized and characterized. Zn-m-TTFTB shows a two-dime...

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Published in:Crystal growth & design 2022-08, Vol.22 (8), p.4941-4947
Main Authors: Yang, Zhi-Mei, Li, Yu-Yang, Zhou, Xiao-Cheng, Liu, Yi-Fan, Li, Jia-Qian, Su, Jian, Zuo, Jing-Lin
Format: Article
Language:English
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Summary:Two new tetrathiafulvalene-based coordination polymers (CPs), Zn-m-TTFTB ([Zn­(m-TTFTB)0.5(CH2CH3OH)­(H2O)] n ) and Cd-m-TTFTB ({[Cd4(m-H2TTFTB)4(CH2CH3OH)2(H2O)10]­(DMF)2(CH2CH3OH)} n ) (m-H4TTFTB = m-tetrathiafulvalene tetrabenzoate), were synthesized and characterized. Zn-m-TTFTB shows a two-dimensional network, while Cd-m-TTFTB has a one-dimensional structure. Compared with the previously reported three-dimensional TTFTB-CPs (H4TTFTB = tetrathiafulvalene tetrabenzoate), Zn/Cd-m-TTFTB-CPs, with a truncated linker, have more compact structures with abundant weak interactions including hydrogen bonds and S···S interactions. The electrical conductivity and solid-state electrochemical properties of Zn/Cd-m-TTFTB were investigated. Furthermore, solid-state adsorption and electron paramagnetic resonance spectra revealed the intramolecular charge transfer in these CPs.
ISSN:1528-7483
1528-7505
DOI:10.1021/acs.cgd.2c00490