2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Phenanthrene ib polycyclic aromatic hydrocarbon (PAH) nrog formula C14H10, muaj peb lub nplhaib benzene. … Phenanthrene tshwm sim lawm thiab kuj yog ib tug neeg tsim tshuaj. Feem ntau, tib neeg raug rau phenanthrene los ntawm kev nqus cov pa luam yeeb tab sis muaj ntau txoj kev raug.
Vim li cas phenanthrene thiaj li muaj ntxhiab?
Phenanthrene yog ruaj khov dua li anthracene vim qhov ruaj khov loj dua ntawm π-system ntawm lub qub, uas muaj ntxhiab ntau dua.
YPuas yog naphthalene ib qho tshuaj tsw qab?
Naphthalene, nrog ob lub nplhaib sib txuas, yog qhov yooj yim tshaj plaws polycyclic aromatic molecule. Nco ntsoov tias tag nrho cov pa roj carbon atom tshwj tsis yog cov ntawm cov ntsiab lus ntawm fusion muaj ib daim ntawv cog lus rau hydrogen atom. Naphthalene, uas muaj 10 π electrons, txaus siab rau Hückel txoj cai rau aromaticity.
Vim li cas phenanthrene thiaj li muaj ntxhiab ntau dua li anthracene?
Siv resonance txoj kev xav los piav qhia lub zog resonance ntau dua ntawm phenanthrene txheeb ze rau anthracene. Hauv lwm lo lus yog vim li cas phenanthrene "ntau dua" dua li anthracene? Anthracene Tsis-bonding theem Tag nrho cov kev sib cog lus orbitals puv thiab tsis muaj electrons nyob rau hauv non-bonding los yog antibonding orbitals. Yog li ntawd: Aromatic!
Qhov uas muaj ntxhiab tshaj plaws?
Furan yog ib qho heterocyclic organic compound, suav nrog tsib lub nplhaib uas muaj ntxhiab nrog plaub carbon atoms thiab ib qho oxygen. Chemical compounds uas muaj xws licov nplhaib tseem raug hu ua furans.
Pom zoo:
Yuav ua li cas sau ntawv thiab yuav ua li cas?
Tab sis tiag tiag, sau ntawv tsuas yog txhais tau tias tso tseg me ntsis nyob ntsiag to, tsis muaj sijhawm los zaum thiab xav txog koj lub neej. Nws tuaj yeem yog los ntawm kev sau cov ntaub ntawv ntawm qhov koj tau ua hnub ntawd; los ntawm venting txog ib yam uas koj tsis tuaj yeem tawm ntawm koj lub siab;
Puas yog quasi aromatic compound?
Quasi aromatic compounds yog cov nyob rau hauv uas cov nqi tam sim no ntawm cov molecule yog ib feem ntawm aromaticity ntawm cov compound thiab khib khub ntawm electrons yuav tsum nyob rau hauv resonance. Yuav ua li cas cov nram qab no quasi aromatic?
Nyob rau hauv diazotization thawj aromatic amine kho nrog?
aryl halides … diazonium ions tau npaj los ntawm diazotization, txheej txheem uas cov tshuaj tsw qab amine (ArNH 2 ) tau kho nrog qhov chaw ntawm nitrous acid Nitrous acid Nitrous acid , (HNO 2), ib qho tsis ruaj khov, tsis muaj zog acidic compound uas tau npaj tsuas yog hauv daim ntawv txias, dilute daws.
Puas yog heterocyclic compounds aromatic?
Ib heterocyclic compound yog ib qho organic compoundnyob rau hauv uas ib los yog ntau tshaj ntawm cov pa roj carbon atoms nyob rau hauv lub qaum ntawm lub molecule tau hloov los ntawm ib tug atom uas tsis yog carbon. Vim tias cov tebchaw no yog cov tshuaj tsw qab monocyclic, lawv yuav tsum ua raws li Hückel Txoj Cai.
Hom twg sawv cev rau electrophile hauv aromatic nitration?
Nitration thiab sulfonation ntawm benzene yog ob qho piv txwv ntawm electrophilic aromatic hloov. Nitronium ion (NO 2+ ) thiab sulfur trioxide (SO 3 ) yog cov electrophiles thiab tus kheej hnov mob nrog benzene muab nitrobenzene thiab benzenesulfonic acid feem.
