YLub cycloheptatrienyl anion muaj 8 electrons nyob rau hauv nws pi system. Qhov no ua rau nws antiaromatic thiab tsis ruaj khov heev. Lub cycloheptatrienyl (tropylium) cation yog aromatic
vim nws kuj muaj 6 electronics nyob rau hauv nws pi system.
Vim li cas Tropylium ion thiaj li muaj ntxhiab tsw?
Tus naj npawb ntawm π electrons hauv lub nplhaib yog 6, yog li ntawd, tropylium cation kuj ua raws Huckel Txoj Cai ntawm (4n + 2) π electrons, qhov twg n=1. Yog li, tropylium cation txaus siab rau txhua tus. tej yam kev mob rau aromaticity thiab yog li ntawd, aromatic nyob rau hauv xwm.
Vim li cas Tropylium anion tsis muaj ntxhiab?
thiab koj tsis tuaj yeem sau 4n + 2=8 tshwj tsis yog n tsis yog tus lej. Yog li ntawd, tropylium anion yog antiaromatic. Txawm li cas los xij, yog tias nws tsis yog qhov tseeb (uas yog, yog tias tus khub ib leeg txaus los thawb cov hydrogen tawm ntawm lub dav hlau), ces nws tsis muaj ntxhiab.
Vim li cas Tropylium ion ruaj khov?
Lub Tropylium cation kuj yog raws li qhia hauv qab no, Nws tau txais qhov ntxiv kev ruaj ntseg vim yog kev sib txuas ntawm cov nqi zoo nrog cov ntawv cog lus pi Nws muaj xya lub suab nrov. Tus naj npawb ntau ntawm cov qauv resonating ua rau nws ruaj khov txog benzylic cation.
Yuav ua li cas Tropylium ion tsim?
Cov tropylium ion tshwm sim los ntawm niam txiv ion ntawm 1 (2) los ntawm ib qho txheej txheem, mle 148 (152) + mle 91 (93)rau qhov uas metastable ion (m) tshwm sim ntawm 55.9 (56.9) lossis los ntawm cov txheej txheem ob kauj ruam uas CH, O ploj ntawm niam txiv ion, muab mle 118 (120) ua raws li kev tshem tawm ntawm BO radial.
