Li-Alkenes le Li-Alkynes: Matlotlo le Litšebeliso Bophelong ba Letsatsi le Letsatsi
Li-alkene le li-alkyne ke lihlopha tse peli tsa li-hydrocarbon tse sa tlalang tse atisang ho fumanoa k'hemistring ea lintho tse phelang. Ka bobeli li na le litšobotsi tse ikhethang tse li khethollang ho li-hydrocarbon tse sa tlalang tse kang li-alkane. Sehloohong sena, re tla tšohla litlhaloso tsa tsona, meaho, thepa ea 'mele le ea lik'hemik'hale, le ts'ebeliso bophelong ba letsatsi le letsatsi.
Tlhaloso ea Li-Alkenes le Li-Alkynes
Li-alkene ke li-hydrocarbon tse sa tlatsoang tse nang le litlamo tse peli pakeng tsa liathomo tsa khabone. Foromo e akaretsang ea li-alkene ke \(C_nH_{2n}\), moo \(n\) e leng palo ea liathomo tsa khabone. Mohlala, ethene (\(C_2H_4\)) ke alkene e bonolo ka ho fetisisa, e lateloa ke propene (\(C_3H_6\)) le butene (\(C_4H_8\)).
Ka lehlakoreng le leng, li-alkyne ke li-hydrocarbon tse sa tlatsoang tse nang le litlamo tse tharo pakeng tsa liathomo tsa khabone. Foromo ea tsona e akaretsang ke \(C_nH_{2n-2}\). Mehlala e tloaelehileng haholo ke ethyne (\(C_2H_2\)) le propyne (\(C_3H_4\)).
Sebopeho sa limolek'hule
Ha ho tluoa tabeng ea sebopeho, li-alkenes le li-alkynes li na le libopeho tse fapaneng ha li bapisoa le li-alkanes.
Li-Alkenes:
1. Jeometri: Li-alkenes li na le jeometri ea trigonal planar e potolohileng liathomo tsa khabone tse amehang tlamong e habeli. Lebaka ke hobane tlamo e habeli e na le tlamo e le 'ngoe ea sigma (\(\sigma\)) le tlamo e le 'ngoe ea pi (\(\pi\)). Tlamo ea pi e etsa hore lielektrone li hoheloe haholo ke liathomo tsa khabone, e leng se fellang ka sebopeho se tiileng haholoanyane se ke keng sa potoloha joalo ka li-alkanes.
2. Li-isomer: Boteng ba maqhama a mabeli bo lumella ho thehoa ha li-isomer tsa jeometri, tse kang li-isomer tsa cis le trans.
Li-Alkyne:
1. Jeometri: Li-alkyne li na le jeometri e otlolohileng ho potoloha athomo ea khabone e amehang tlamong e meraro. Tlamo e meraro e na le tlamo e le 'ngoe ea sigma le litlamo tse peli tsa pi, e leng se fellang ka molek'hule e otlolohileng haholo.
2. Li-Isomer: Li-alkyne li na le li-isomer tsa sebopeho feela hobane tšehetso e otlolohileng ea tlamo e meraro ha e lumelle isomerization ea geometri.
Thepa ea 'Mele le ea Lik'hemik'hale
Thepa ea 'Mele:
1. Lihlopha tsena ka bobeli li na le lintlha tse tlaase tsa ho belisa le ho qhibiliha ha li bapisoa le li-alkanes tse nang le boima bo tšoanang ba limolek'hule.
2. Li-alkene tse tlase le li-alkyne (C_2 ho isa ho C_4) hangata ke likhase mochesong oa kamore, ha tse phahameng e le metsi kapa lintho tse tiileng.
3. Lihlopha tsena ka bobeli hangata ha li qhibilihe metsing empa li qhibiliha ka har'a metsoako ea lintho tse phelang e kang ether le benzene.
Thepa ea Lik'hemik'hale:
1. Reactivity: Li-alkenes le li-alkynes ka bobeli li arabela haholo ka lebaka la boteng ba litlamo tse habeli le tse tharo, ho bolelang hore lielektrone tse amehang litlamong tsena li fetisetsoa habonolo kapa li hlaseloa ke li-reagent tsa lik'hemik'hale.
2. Ho eketsa: E 'ngoe ea likarabelo tse tloaelehileng haholo ke karabelo ea ho eketsa. Li-alkenes le li-alkynes li ka eketsa limolek'hule tse nyane tse kang H_2, li-halogen (Cl_2, Br_2), le li-halogen acid (HCl, HBr) litlamong tsa tsona tse habeli.
3. Polymerization: Li-alkenes le tsona li ka feta liketsong tsa polymerization, tsa hlahisa li-polymer tse sebelisoang haholo indastering ea polasetiki.
Litšebeliso Bophelong ba Letsatsi le Letsatsi
Li-Alkenes:
1. Polymerization: E 'ngoe ea lits'ebetso tse kholo ka ho fetisisa tsa alkenes ke tlhahisong ea polasetiki ka ts'ebetso ea polymerization. Mohlala, ethene (kapa ethylene) e sebelisoa ho etsa polyethylene, e 'ngoe ea polasetiki e tloaelehileng haholo e sebelisoang bakeng sa mekotla ea polasetiki, libotlolo le lihlahisoa tse fapaneng tsa lapeng.
2. Indasteri ea Lik'hemik'hale: Li-alkene hangata li sebelisoa e le thepa e tala indastering ea lik'hemik'hale bakeng sa ho kopanya metsoako e fapaneng. Mohlala, ethene e sebelisoa ho etsa ethanol, styrene le ethylene glycol.
Li-Alkyne:
1. Acetylene: Ethyne (acetylene) ke e 'ngoe ea li-alkyne tsa bohlokoa ka ho fetisisa le tse sebelisoang haholo indastering. Acetylene e sebelisoa e le mafura ho tjheseletsa le ho seha tšepe hobane e ka hlahisa lelakabe le chesang haholo.
2. Ho kopanya lintho tse phelang: Li-alkyne li boetse li sebelisoa e le majoe a ho hata ka har'a motsoako o rarahaneng oa lintho tse phelang. Sehlopha sa mesebetsi ea alkyne hangata se sebelisoa e le ntlha ea ho kopanya bakeng sa ho eketsa lihlopha tse fapaneng tsa mesebetsi ho limolek'hule tse kholo tsa lintho tse phelang.
Chefo le Tšusumetso ea Tikoloho
Leha ho na le melemo e mengata, tšebeliso ea li-alkenes le li-alkynes le eona e na le likotsi tse itseng.
1. Chefo: Li-alkenes le li-alkynes tse ling li ka ba chefo haeba li hema ka bongata bo phahameng. Ho pepesehela lintho tsena nako e telele ho ka baka ho teneha tsamaisong ea ho hema le letlalong.
2. Tikoloho: Ho lahla lihlahisoa tse entsoeng ka alkene ka tsela e sa lokelang (joalo ka polasetiki) ho ka baka tšilafalo e mpe ea tikoloho. Ka hona, ho sebelisa hape le taolo ea litšila ke tsa bohlokoa haholo.
Ho koala
Li-alkene le li-alkyne ke lihlopha tse peli tsa li-hydrocarbon tse bapalang karolo ea bohlokoa ts'ebelisong ea k'hemistri le indastering. Ho utloisisa sebopeho sa tsona, thepa le ts'ebeliso ho ka re thusa ho sebelisa bokhoni ba tsona ka katleho le ka boikarabello. Leha li ntse li e-na le likotsi tse itseng, ka theknoloji le mekhoa e nepahetseng, melemo ea tsona e feta haholo litlamorao life kapa life tse mpe tse ka bang teng. Ka hona, tsebo ea li-alkene le li-alkyne ke senotlolo sa ho ntlafatsa ts'ebeliso ea tsona bophelong ba letsatsi le letsatsi.
