| 摘要 |
<p>A compound represented by formula (I), or a salt thereof (therein, R1 represents a substituent group on a benzene ring; R2 represents a monovalent substituent group; R3 and R4 represent a hydrogen atom or an alkyl group; R5 and R6 represent an alkyl group or an aryl group; R7 and R8 represent a hydrogen atom or an alkyl group; R9 and R10 represent a hydrogen atom or a monovalent substituent group; and X represents a silicon atom, a germanium atom or a tin atom).</p> |
