Activated Complex vs Transition State | Transition Complex vs Activation Complex
Thaum ib lossis ntau cov reactants hloov mus rau cov khoom, lawv yuav dhau los ntawm kev hloov pauv thiab hloov lub zog. Cov ntawv cog lus tshuaj nyob rau hauv cov reactants tau tawg, thiab cov ntawv cog lus tshiab tau tsim los tsim cov khoom, uas txawv kiag li ntawm cov reactants. Kev hloov kho tshuaj lom neeg no hu ua tshuaj lom neeg. Muaj ntau qhov sib txawv uas tswj cov kev tshwm sim. Rau qhov kev tshwm sim tshwm sim, yuav tsum muaj lub zog xav tau. Reactant molecules mus los ntawm kev hloov pauv thoob plaws hauv cov tshuaj tiv thaiv piv txwv tias muaj ntau yam atomic configurations. Kev ua haujlwm nyuaj thiab hloov pauv lub xeev yog ob lub ntsiab lus siv los txheeb xyuas cov kev sib tshuam nruab nrab thiab feem ntau ntawm cov sij hawm ob nqe lus no tau siv sib hloov.
Dab tsi yog Activated complex?
Ib lub molecule yuav tsum tau qhib ua ntej lawv tuaj yeem raug cov tshuaj tiv thaiv. Molecules ib txwm tsis muaj zog ntau nrog lawv, tsuas yog qee zaus qee cov molecules nyob rau hauv lub zog lub xeev kom muaj kev cuam tshuam. Qhov twg muaj ob lub reactants, kom cov tshuaj tiv thaiv tshwm sim, cov reactants yuav tsum sib tsoo nrog ib leeg nyob rau hauv kev taw qhia kom raug. Txawm hais tias reactants tsuas yog ntsib ib leeg, feem ntau ntsib tsis ua rau muaj kev cuam tshuam. Cov kev soj ntsuam no tau muab lub tswv yim ntawm muaj lub zog thaiv kev cuam tshuam. Cov reactants nrog lub zog siab dua nyob rau hauv cov tshuaj tiv thaiv sib tov tuaj yeem suav tias yog cov tshuab ua kom muaj zog. Tsis yog tag nrho cov activated complexes yuav mus rau cov khoom, lawv tuaj yeem poob rov qab rau cov reactants yog tias lawv tsis muaj zog txaus.
Lub Xeev Hloov Pauv yog dab tsi?
Lub xeev hloov pauv tau xav txog ib qho uas cov tshuaj tiv thaiv kab mob yog strained los yog distorted los yog muaj qhov tsis zoo ntawm hluav taws xob configuration. Lub molecule yuav tsum dhau los ntawm lub zog hloov pauv siab ua ntej yuav tshwm sim. Lub zog sib txawv yog hu ua lub zog ua kom muaj zog. Qhov no yog lub zog siab tshaj plaws thaiv kev cuam tshuam rau qhov tshwm sim. Yog tias qhov kev ua kom muaj kev cuam tshuam ntau dhau, tsuas yog ib feem me me ntawm cov molecules yuav muaj lub zog txaus los hla nws, yog li cov khoom xav tau concentration yuav tsis tau. Lub atomic kev npaj ntawm tag nrho cov molecules nyob rau hauv cov tshuaj tiv thaiv, uas muaj lub activation zog, yog hu ua kev hloov complex. Transition complex muaj cov khoom siv nrog cov nyiaj poob haujlwm ib nrab thiab ib nrab ua cov ntawv cog lus tshiab. Yog li ntawd, nws muaj ib feem tsis zoo thiab zoo nqi. Lub xeev hloov pauv tau pom nrog ob lub dagger kos npe (‡). Yog tias qhov hloov pauv lub xeev lub zog ntawm cov tshuaj tiv thaiv tuaj yeem txo qis, tom qab ntawd cov tshuaj tiv thaiv yuav tsum tau nrawm dua thiab yuav xav tau lub zog qis dua mus ntxiv. Rau cov tshuaj tiv thaiv exothermic, hauv qab no yog lub zog nkhaus.
Nws yog ib qho tseem ceeb kom paub txog cov kev hloov pauv hauv lub xeev tshwj xeeb tshaj yog thaum tsim cov tshuaj rau enzyme inhibition.
Dab tsi yog qhov txawv ntawm qhov qhib ua haujlwm thiab lub xeev hloov pauv?
• Kev hloov pauv hauv lub xeev yog qhov kev npaj atomic nrog lub zog siab tshaj plaws thaum cov reactants mus rau cov khoom. Activated complexes yog tag nrho lwm cov kev teeb tsa hauv txoj kev tshuaj tiv thaiv, uas muaj zog ntau dua li cov molecules ib txwm.
• Muaj qhov ua tau zoo ntawm kev hloov pauv hauv xeev mus rau cov khoom lag luam. Txawm li cas los xij, kev ua kom cov complexes tuaj yeem poob rov qab los ua cov reactants dua li mus rau cov khoom.
