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本文以一种水溶性的冠醚环化四硫富瓦烯羧酸为配体,成功合成并表征了结构新颖的含四硫富瓦烯衍生物的二价钴一维配位聚合物[{Co2(trioTTF)2(H2O)6}·5H2O]n(1).X射线单晶衍射结构分析表明,在配位聚合物1中Co2+离子之间通过羧酸桥联形成一维链状结构,相邻链的四硫富瓦烯羧酸配体之间存在较短的S····S相互作用.尽管配位聚合物1的室温电导率很小,但其电阻-温度特性曲线显示具有半导体性质.同时,磁性研究表明,低温下由羧酸桥联的Co2+离子存在弱的铁磁相互作用.本研究为分子磁性半导体的进一步设计合成提供了思路.
In this paper, a novel water-soluble crown ether tetrafluoroborate carboxylic acid was synthesized and characterized as a novel bivalent cobalt coordination polymer with tetrathiafulvalene derivatives [ Co2 (trioTTF) 2 (H2O) 6} · 5H2O] n (1). X-ray single crystal diffraction structure analysis showed that the Co2 + ions in coordination polymer 1 form a one- There is a short S · S interaction between the adjacent chain tetrathiafulvalene carboxylic acid ligands Although the room temperature conductivity of the coordination polymer 1 is small, the resistance-temperature characteristic curve shows that there is a Semiconductor properties.At the same time, magnetic studies show that there is a weak ferromagnetic interaction between carboxylic acid-bridged Co2 + ions at low temperature.This study provides the idea for the further design and synthesis of molecular magnetic semiconductors.