练习(书后P276题15) (μ叫 910111213141516 100 3030 ve=c(芳)15881494和1471 %oM图 2925 6a,1442m V-1303,1268 y=H748cm(单 vwH3430,330(双 4030323202o00oM2162015014010012100306d o cm练习 (书后P276题15) −H 3030 C=(芳) C 1588 ,1494和1471 (单) 1 748 − − H cm NH 3430 ,3300(双) 1622 −NH2 1303,1268 C−N 2925 3 as CH 1442 3 as CH 1380 3 s CH