Vim li cas cyclooctatetraene tsis yog hom phiaj?

Cov txheej txheem:

Vim li cas cyclooctatetraene tsis yog hom phiaj?
Vim li cas cyclooctatetraene tsis yog hom phiaj?

Video: Vim li cas cyclooctatetraene tsis yog hom phiaj?

Video: Vim li cas cyclooctatetraene tsis yog hom phiaj?
Video: VIM LI CAS NYIAJ NPLOG THIAJ TSIS MUAJ NQIS 03.19.23 2024, Kaum ib hlis
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Yog vim li cas qhov tsis muaj qhov sib txawv yog qhov octagon tsis tu ncua muaj cov kaum sab hauv ntawm 135 degrees, thaum sp2 lub kaum sab xis feem ntau ruaj khov ntawm 120 degrees. Txhawm rau kom tsis txhob muaj cov kab mob ntawm cov molecule yog li no, siv cov duab tsis muaj txheej txheem.

YPuas yog cyclooctatetraene yog cov qauv qauv piav qhia?

Cyclooctatetraene assumes ib tub (piv txwv li, nkoj zoo li) conformation. Raws li nws tsis yog hom phiaj, txawm tias nws muaj 4n π-electrons, cov electrons no tsis delocalized thiab conjugated. Cov molecule yog li nonaromatic.

Vim li cas cyclooctatetraene Dianion planar?

Cyclooctatetraene nyob rau hauv nws daim ntawv dianionic (COT(2-)) yog suav tias yog ib feem los yog tag nrho aromatic vim qhov tseeb hais tias, tsis zoo li nws nruab nrab counterpart, nws txais cov qauv qauv nrog CC daim ntawv cog lus sib npaug.

Vim li cas cyclooctatetraene tsis antiaromatic?

Raws li cov qauv aromaticity tau piav qhia ua ntej, cyclooctatetraene yog tsis muaj ntxhiab vim nws tsis ua raws li 4n + 2 π electron Huckel txoj cai(piv txwv li nws tsis muaj qhov khib. tus lej ntawm π electron khub). … Yog li, yog tias cyclooctatetrene yog cov phiaj xwm nws yuav ua rau muaj ntxhiab tsw, qhov xwm txheej tsis ruaj khov.

YPuas yog cyclooctatetraene antiaromatic lossis tsis muaj ntxhiab?

Vim hais tias cyclooctatetraene ua txhaum ib qho ntawm thawj peb yam aromaticity (nws tsis yog planar), nws yog qhov zoo tshaj plaws piav raws li non-aromatic.

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