Cov txheej txheem:
Video: Bridged nplhaib system yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv txuas hniav bicyclic compounds, ob nplhaib qhia peb los yog ntau dua atoms, cais ob lub taub hau atoms los ntawm a tus choj muaj tsawg kawg yog ib lub atom. Piv txwv li, norbornane, tseem hu ua bicyclo [2.2. 1] heptane, tuaj yeem pom raws li ib khub ntawm cyclopentane nplhaib txhua qhov sib koom peb ntawm lawv tsib carbon atoms.
Ntawm no, dab tsi yog fused nplhaib system?
A qhov system qhov twg txhua daim ntawv cog lus yog ib feem ntawm a nplhaib ; qhov twg txhua tus nplhaib yog ortho- ua fused (FR-1.1. 1), ortho- thiab peri- ua fused (FR-1.1. 2), rau yam tsawg kawg yog ib qho nplhaib ; thiab qhov twg tsis muaj daim ntawv cog lus feem ntau rau ntau tshaj ob nplhaib npe a fused nplhaib system.
Ib tug kuj yuav nug, dab tsi yog lub choj taub hau atom? Bridgehead : Ib atom uas yog ib feem ntawm ob los yog ntau lub nplhaib nyob rau hauv ib tug polycyclic molecule. Bridgehead carbons nyob rau hauv naphthalene. Bridgehead carbons nyob rau hauv 2-chlorobicyclo [2.21] heptane. Tag nrho yim carbons ntawm cubane yog choj taub hau atoms . Cov ntsiab lus tseem ceeb: Bicyclic, tricyclic, Bredt txoj cai.
Ib yam li ntawd ib tug yuav nug, koj npe li cas koj lub tsheb kauj vab?
Txhawm rau hu ua bicyclic alkanes, koj ua raws li peb kauj ruam no:
- Suav tag nrho cov carbons nyob rau hauv tag nrho cov molecule. Qhov no yog niam txiv lub npe (eg.
- Suav tus naj npawb ntawm cov pa roj carbon monoxide ntawm tus choj taub hau, tom qab ntawd muab tso rau hauv cov hlua khi hauv nqes mus. (eg.
- Muab lo lus bicyclo rau ntawm qhov pib ntawm lub npe.
Ob lub nplhaib benzene ua ke hu ua dab tsi?
Polycyclic aromatic hydrocarbons muaj xws li ob los yog ntau dua benzene rings fused ua ke . Naphthalene muaj xws li ob lub nplhaib benzene uas yog fused ua ke ; qhov tshwm sim molecule yog tseem aromatic , thiab undergoes cov tshuaj tiv thaiv uas yog ib yam ntawm tshuaj benzene nws tus kheej.
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