用前沿π电荷密度估算直链共轭烯烃电子光谱波长的经验公式

AN EMPIRICAL FORMULA FOR ESTIMATING THE MAXIMUM ABSDRPTION WAVELENGTH OF THE STRAIGHT CHAIN CONJUGATED ALKENES WITH THE FRONTAL π-CHARGE DENSITY

提出一个可用来估算直链共轭烯烃的最大吸收波长的经验公式,方法简便.物理竟义明确.

An empirical double parameters formula is proposed.It isλ_(max)=ρ_m-A[4/(n+1)sin^2 jn/(n+1))π]It can be used to estimate the maximum absorption wavelength of the straight chain con-jugated alkenes.The method is convenient,and the physical meaning is clear.