Qhov sib txawv tseem ceeb ntawm kev sib ntxiv oxidative thiab txo qis yog tias oxidative ntxiv yog hais txog qhov sib ntxiv ntawm ob lub anionic ligands rau cov hlau complex, whereas reductive tshem tawm hais txog kev tshem tawm ntawm ob anionic ligands los ntawm ib tug hlau complex.
Oxidative ntxiv thiab tshem tawm txo qis yog tshuaj lom neeg cov tshuaj tiv thaiv uas cuam tshuam rau ib leeg. Cov txheej txheem ob no muaj feem xyuam nrog kev sib koom ua ke uas muaj cov hlau hloov pauv thiab ligands txuas rau nws.
Dab tsi yog Oxidative Ntxiv
Oxidative ntxiv yog ib hom tshuaj tiv thaiv inorganic nyob rau hauv uas ob lub anionic ligands txuas rau kev sib koom ua ke. Peb tuaj yeem pom cov txheej txheem no ua OA. Ntawm no, cov anionic ligands feem ntau tsim los ntawm A-B hom molecules. Cov txheej txheem thim rov qab tiag tiag ntawm cov tshuaj tiv thaiv no - qhov twg ob lub anionic ligands tawm ntawm kev sib koom ua ke ua ib hom A-B hom molecule - yog hu ua reductive tshem tawm. Txij li thaum cov tshuaj tiv thaiv no suav nrog kev nce ntawm cov ligands hauv kev sib koom ua ke, tus lej sib koom kuj nce ntxiv nrog oxidative ntxiv. Yog li ntawd, lub valence electron suav ntawm lub complex kuj nce los ntawm ob units. Rau hom kev tshwm sim no tshwm sim, kev sib koom ua ke yuav tsum tsis muaj zog lossis tsis muaj hluav taws xob.
Daim duab 01: Daim duab dav dav rau Oxidative Ntxiv
Feem ntau, oxidative ntxiv hloov pauv 16-valence electron kev sib koom ua ke rau hauv 18-valence electron complex. Tsis tas li ntawd, oxidative ntxiv tuaj yeem tshwm sim raws li qhov sib ntxiv ntawm binuclear oxidative. Ntawm no, ob lub chaw hlau tau hloov pauv lub xeev oxidation, thiab lawv cov oxidation xeev nce los ntawm ib chav tsev, uas muab tag nrho ob-unit increment.
Kev tshem tawm txo qis yog dab tsi?
Kev tshem tawm yog qhov tshem tawm ntawm ob lub anionic ligands los ntawm cov hlau complex, uas yog qhov ua tiav ntawm cov tshuaj tiv thaiv oxidative ntxiv. Cov txheej txheem no txo cov txheej txheem oxidation ntawm cov hlau ntawm kev sib koom ua ke, thiab tus lej sib koom txo qis los ntawm ob chav.
Daim duab 02: Daim duab dav dav rau Kev Tshem Tawm Tshem Tawm
Peb tuaj yeem soj ntsuam hom kev cuam tshuam no hauv kev sib koom ua ke uas muaj cov hlau uas muaj d 6 thiab d8 electron systems. Cov tshuaj tiv thaiv no tuaj yeem tshwm sim los ntawm kev hloov pauv ntawm 18-valence electron complexes rau hauv 16-valence electron complexes thiab ntawm binuclear tshem tawm cov tshuaj tiv thaiv. Nyob rau hauv cov tshuaj tiv thaiv binuclear tshem tawm, ob lub hlau complexes txo lawv cov kev oxidation xeev los ntawm ib chav tsev thiab muab ib tug ob-unit txo ntawm oxidation lub xeev thiab valence electron suav.
Qhov txawv ntawm Oxidative Ntxiv thiab Txo Kev Tshem Tawm yog dab tsi?
Oxidative ntxiv thiab tshem tawm txo qis yog cov tshuaj tiv thaiv ib leeg. Qhov sib txawv tseem ceeb ntawm oxidative ntxiv thiab kev tshem tawm txo qis yog tias oxidative ntxiv yog hais txog qhov sib ntxiv ntawm ob lub anionic ligands rau cov hlau complex, whereas reductive tshem tawm hais txog kev tshem tawm ntawm ob anionic ligands los ntawm ib tug hlau complex. Ntxiv mus, nyob rau hauv oxidative ntxiv, lub valence electron suav thiab lub formal oxidation xeev nce los ntawm ob units, tab sis nyob rau hauv reductive tshem tawm cov tshuaj tiv thaiv, lub formal oxidation xeev thiab valence electron suav txo los ntawm ob units.
Hauv qab no yog cov lus piav qhia ntxaws txog qhov sib txawv ntawm oxidative ntxiv thiab txo qis kev tshem tawm.
Summary – Oxidative Addition vs Reductive Elimination
Oxidative ntxiv thiab tshem tawm txo qis yog tshuaj lom neeg cov tshuaj tiv thaiv uas cuam tshuam rau ib leeg. Qhov sib txawv tseem ceeb ntawm oxidative ntxiv thiab tshem tawm txo qis yog tias oxidative ntxiv hais txog qhov sib ntxiv ntawm ob lub anionic ligands rau cov hlau complex, whereas reductive tshem tawm hais txog kev tshem tawm ntawm ob lub anionic ligands los ntawm ib tug hlau complex.
