| 摘要 |
PURPOSE:To provide a titled material which exhibits a high nonlinear optical effect in a crystal state by forming said material of a specific compd. CONSTITUTION:The compd. expressed by the formula (I) is used. In the formula (I), R<1> and R<2> denote a hydrogen atom and alkyl group which may be substd., may form a ring by R<1> and R<2>, and R<1> and R<2> may be the same. R<3> denotes a hydrogen atom, alkyl group which may be substd. and aryl group which may be substd. The embodiment of the compd. expressed by the formula (I) is expressed by the formula 1. |
