期刊
CHEMICAL SCIENCE
卷 13, 期 1, 页码 149-158出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1sc04248c
关键词
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资金
- EPSRC
- University of Kent
- University of Cambridge
- Homerton College
A series of substituted 1,2,4-benzothiadiazine 1-chlorides have been synthesized by treating N-arylamidines in neat thionyl chloride, with the S(iv) 1-chlorides easily reduced to persistent benzothiadiazinyl radicals characterized by EPR spectroscopy and cyclic voltammetry. Crystallographic studies on isolated radicals show dimerization via pancake bonding in the solid-state, resulting in spin-pairing and net diamagnetism.
A family of substituted 1,2,4-benzothiadiazine 1-chlorides have been prepared by treatment of N-arylamidines in neat thionyl chloride at reflux. The S(iv) 1-chlorides are readily reduced under mild conditions to persistent 1,2,4-benzothiadiazinyl radicals which have been characterised by EPR spectroscopy and cyclic voltammetry. Crystallographic studies on isolated radicals indicate that the radicals dimerise via pancake bonding in the solid-state, resulting in spin-pairing and net diamagnetism.
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