tautomer, and all forms of 3 exist as either the syn,anti or anti,anti isomers of the diimino tautomer. The 3Tric and 3Mono polymorphs represent a rare example in which the phenomena of conformational polymorphism and conformational isomorphism occur for the same substance. Compound 4 crystallizes as the anti isomer of the keto form. Differential scanning calorimetry and thermogravimetric analysis were
(a)第1亚
氨基-3- phenyliminoisoindoline(的晶体和分子结构2),(B)两种多晶型(3Mono和3Tric)和己烷溶剂化物(3Hex的1,3-双(苯基亚
氨基)
异吲哚啉()3) (c)3-苯基亚
氨基异
吲哚满酮(4)通过单晶X射线衍射测定。通过从己烷中结晶获得两种多晶型物和3的溶剂化物。在固体状态,2被发现为反
氨基互变异构体的异构体,和所有形式的3既可以是在顺式,反或反,反二亚
氨基互变异构体的异构体。的3Tric和3Mono多晶型物代表其中构象多态性和构象同构的现象发生的相同物质的罕见例子。化合物4结晶为酮形式的反异构体。进行差示扫描量热法和热重分析以表征2 – 4样品的热性质。上的X射线粉末衍射研究2,3和4表明,而试样2是单相,没有一个样品3和4在实验条件下结晶为单相。版权所有©2004 John Wiley&Sons,Ltd.