Thaum muaj qhov tshwm sim yog tias ntxiv rau ntawm ib qho ntawm π daim ntawv cog lus ntawm ib qho allene (muaj cov lej ntawm π daim ntawv cog lus zoo li H2C=C=CH2) tshwm sim tom qab ntawd qhov carbocation yog tsim. Txhawm rau txiav txim siab txoj haujlwm ntawm tus nqi zoo, peb saib kev ruaj ntseg ntawm carbocation.
Puas muaj resonance hauv allene?
No, resonance tsis tshwm sim hauv Allenes. Vim hais tias resonance ua qhov twg yog Ob daim ntawv cog lus thiab Ob daim ntawv cog lus yuav tsum nyob ntawm txoj haujlwm sib txuas.
Is allene chiral?
Our disubstituted allene has a chiral axis - zoo li tus ntsia hlau.
Puas allenes reactive?
Allenes yog ib qho tsis siv moiety hauv cov organic synthesis, vim tias cov pab pawg feem ntau xav tias yuav ua rau muaj zog heev. Txawm li cas los xij, ntau lub tebchaw uas muaj cov pab pawg allene, suav nrog cov khoom siv ntuj tsim thiab tshuaj, yog qhov ruaj khov. … Ntau cov allenes uas hloov pauv tau yooj yim muaj los ntawm cov cawv propargylic.
Puas yog kev sib cog lus hauv allene delocalized?
Txoj kev sib raug zoo hauv allene yuav tsis piav raws li delocalized. … Lub tshuab rau delocalization ntawm T electrons yog kev sib tshooj ntawm qhov sib npaug ntawm cov atomic orbitals ntawm cov atoms uas nyob ib sab.
