- Perchloro-2,5,8-triazaphenalenyl radical
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(Chemical Equation Presented) The unusually stable perchloro-2,5,8- triazaphenalenyl radical 1 and its twisted dechlorinated dimer 2 were synthesized and characterized by ESR spectroscopy and X-ray crystallography. The X-ray structure of dimer 2 shows that the double bond connecting the two triazaphenalene systems is strongly twisted. Dimer 2 has a dramatic color shift from the solid state to solution, which may be due to a change of the twisting angle between both states.
- Zheng, Shijun,Thompson, Joe D.,Tontcheva, Ana,Khan, Saeed I.,Rubin, Yves
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p. 1861 - 1863
(2007/10/03)
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- Pyrazolo-pyridine derivatives as ligands for GABA receptors
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Pyrazolo[4,3-c]pyridin-3-one derivatives substituted at the 2-position by an optionally substituted aryl or heteroaryl moiety, and having pendant substituents at the 7-position and optionally also at the 6-position, are selective ligands for GABAAreceptors, particularly having high affinity for the α2 and/or α3 subunit, and are useful in the treatment and/or prevention of disorders of the central nervous system, including anxiety and convulsions.
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