Qhov sib txawv tseem ceeb ntawm lub zog siv hluav taws xob ruaj khov thiab lub zog sib cais yog lub zog siv hluav taws xob ua kom ruaj khov yog hais txog lub zog sib txawv ntawm lub zog ntawm lub teeb tsa hluav taws xob ntawm ligand thiab lub zog ntawm hluav taws xob teeb tsa ntawm thaj chaw isotropic. Meanwhile, crystal field splitting zog hais txog lub zog sib txawv ntawm d orbitals ntawm ligands.
Cov ntsiab lus siv lead ua teb ruaj khov zog thiab lub zog sib cais tuaj raws li kev tshawb xav siv lead ua teb. Cov siv lead ua teb txoj kev xav los yog CFT yog ib lub tswv yim tshuaj uas piav qhia txog kev tawg ntawm cov degeneracies ntawm cov hluav taws xob orbitals vim yog ib qho kev faib tawm hauv ib puag ncig. Qhov kev xav no muaj txiaj ntsig zoo hauv kev piav qhia cov khoom ntawm cov hlau hloov pauv.
Crystal Field Stabilization Zog yog dab tsi?
Crystal teb stabilization zog los yog CFSE hais txog lub zog sib txawv ntawm lub zog ntawm cov hluav taws xob teeb tsa ntawm ligand thiab lub zog ntawm electron configuration ntawm isotropic teb. Thaum lub ligand los ze zog mus rau lub chaw hlau, muaj ib tug repulsion ntawm lub electrons ntawm lub ligand thiab cov electrons ntawm cov hlau atom. Raws li qhov tshwm sim, lub d orbitals ntawm cov hlau atom nyiam sib cais ua ob pawg thaum lub ligand ze rau cov hlau atom. Ob pawg ntawm cov qib orbital muaj npe eg thiab t2g Lub zog sib txawv ntawm ob lub zog qib no yog sib npaug rau lub zog siv lead ua stabilization zog. Yog li, tus nqi zog no piav qhia lub zog ntawm lub zog ntawm lub zog ntawm cov hluav taws xob ntawm ligand thiab cov hluav taws xob ntawm cov hlau atom.
Daim duab 01: Ob Txheej ntawm Orbital Spliting
Muaj ob peb yam uas tuaj yeem cuam tshuam rau lub zog siv lead ua kom ruaj khov:
- Nature of the ligand
- Xwm ntawm lub hauv paus hlau atom
- geometry ntawm kev sib koom ua ke
- Quantum tus lej ntawm lub hauv paus hlau atom
Crystal Field Splitting Zog yog dab tsi?
Crystal teb splitting zog hais txog lub zog sib txawv ntawm d orbitals ntawm ligands. Lwm lub npe rau lo lus no yog ligand field splitting zog. Peb siv cov Greek tsab ntawv Δ los qhia txog crystal field splitting.
Daim duab 02: Peb Txheej ntawm Orbital Spliting
Hauv cov khoom siv lead ua teb sib cais, d orbitals ntawm lub hauv paus hlau atom zoo li faib ua ob lossis ntau lub zog kom tso cai rau cov ligands khi nrog cov hlau atom ntawm kev sib koom ua ke. Lub zog sib txawv ntawm d orbital splitting theem yog hu ua lub crystal field splitting zog.
Qhov txawv ntawm Crystal Field Stabilization Zog thiab Spliting Zog yog dab tsi?
Cov ntsiab lus siv lead ua teb ruaj khov zog thiab tawg lub zog poob rau hauv txoj kev xav siv lead ua teb. Qhov sib txawv tseem ceeb ntawm crystal field stabilization thiab splitting zog yog hais tias siv lead ua teb stabilization zog yog hais txog lub zog sib txawv ntawm lub zog ntawm cov hluav taws xob configuration ntawm ligand thiab lub zog ntawm electron configuration ntawm isotropic teb. Txawm li cas los xij, lub zog siv hluav taws xob sib cais yog hais txog lub zog sib txawv ntawm d orbitals ntawm ligands.
Hauv qab infographic qhia txog qhov sib txawv ntawm cov khoom siv lead ua stabilization thiab splitting zog.
Summary – Crystal Field Stabilization Zog vs Splitting Zog
Cov ntsiab lus siv lead ua teb ruaj khov zog thiab tawg lub zog poob rau hauv txoj kev xav siv lead ua teb. Qhov sib txawv tseem ceeb ntawm crystal field stabilization thiab splitting zog yog hais tias cov siv lead ua teb stabilization zog yog hais txog lub zog sib txawv ntawm lub zog ntawm electron configuration ntawm ligand thiab isotropic teb. Tab sis, crystal field splitting zog hais txog lub zog sib txawv ntawm d orbitals ntawm ligands.
