Qhov Tseem Ceeb Qhov txawv - Kev Koom Tes Sib Koom Tes vs Kev Sib Koom Tes
Qhov sib txawv tseem ceeb ntawm kev sib koom tes thiab kev sib koom ua ke yog qhov chaw sib koom ua ke yog kev sau ntawm lub hauv paus atom thiab cov ligands nyob ib puag ncig lub atom whereas kev sib koom tes yog kev sib koom ua ke muab nrog hluav taws xob nqi ntawm kev sib koom ua ke.
Kev sib koom ua ke yog cov tshuaj sib xyaw ua ke ntawm lub hauv paus atom (feem ntau yog meta-atom lossis hlau ion) ncig los ntawm cov molecules lossis ions hu ua ligands. Cov ligands yog khi rau hauv nruab nrab hlau atom ntawm kev sib koom tes covalent bonds. Cov ntawv cog lus no tau tsim thaum cov khoom siv hluav taws xob nplua nuj lossis cov ions pub rau lawv cov khoom siv hluav taws xob ib leeg rau cov hlau atom (lossis ion).
Kev Koom Tes Sib Koom Tes yog dab tsi?
Kev sib koom ua ke yog qhov sib sau ntawm cov khoom sib koom ua ke nrog rau lub hauv paus atom thiab cov ligands nyob ib puag ncig lub hauv paus atom. Cov ligands raug khi rau hauv nruab nrab atom ntawm kev sib koom tes covalent bonds. Ib qho kev sib koom ua ke covalent daim ntawv cog lus yog tsim thaum lub electron-nplua nuj molecule los yog ion pub nws ib leeg electron khub rau ib tug electron-deficient atom.
Lub hauv paus atom yog feem ntau ntawm lub sij hawm ib tug hlau atom nyob rau hauv d-block. Qhov ntawd yog vim hais tias d-block ntsiab muaj ntau qhov khoob d orbitals (qhov chaw txaus rau cov khoom siv hluav taws xob tuaj). Piv txwv li, lub koom haum koom tes ntawm [CoCl2(NH3)4 + is CoCl2(NH3)4 Lub hauv paus hlau atom yog cob alt (Co).
Kev sib koom tes yog dab tsi?
Kev sib koom ua ke yog qhov sib sau ntawm cov khoom sib koom ua ke uas suav nrog lub hauv paus atom thiab cov ligands nyob ib puag ncig lub hauv paus atom muab nrog rau cov nqi hluav taws xob ntawm cov khoom sib txuas. Lub hauv paus hlau atom yog feem ntau ntawm lub sij hawm ib tug zoo nqi tivthaiv (a cation). Qee cov ligands raug them nruab nrab (thiab muaj ib leeg electron khub uas tuaj yeem pub dawb) thaum lwm cov ligands raug them tsis zoo (anions). Yog li ntawd, tus nqi ntawm kev sib koom ua ke yog txiav txim los ntawm ob qho tib si hauv nruab nrab hlau ion thiab tus nqi ntawm ligands.
Daim duab 01: Thawj Kev Sib Koom Tes ntawm Trans-dichlorotetraamminecob alt(III)
Qhov kev sib koom tes tuaj yeem pom nyob rau hauv ob hom ua thawj zaug kev sib koom tes thiab thib ob kev sib koom tes. Thawj qhov kev sib koom ua ke suav nrog cov ligands uas txuas ncaj qha rau cov hlau ion whereas thib ob kev sib koom tes muaj xws li cov khoom sib txuas ncaj qha thiab cov ions thiab. Piv txwv li, thawj qhov kev sib koom tes ntawm [CoCl2(NH3)4]Cl yog ntawm [CoCl2(NH3)4+ whereas lub thib ob coordination sphere yog Cl– ion.
Dab tsi yog qhov txawv ntawm Kev Sib Koom Tes thiab Kev Sib Koom Tes?
Kev Koom Tes Sib Koom Tes vs Kev Sib Koom Tes |
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| Kev sib koom ua ke yog cov khoom ntawm kev sib koom ua ke uas suav nrog lub hauv paus atom thiab cov ligands nyob ib puag ncig lub hauv paus atom. | Kev sib koom ua ke yog qhov sib sau ntawm cov khoom sib koom ua ke uas suav nrog lub hauv paus atom thiab cov ligands nyob ib puag ncig lub hauv paus atom muab nrog rau cov nqi hluav taws xob ntawm cov khoom sib xyaw. |
| khoom | |
| Kev sib koom ua ke suav nrog cov atoms thiab ions tam sim no hauv kev sib koom tes. | Kev sib koom ua ke suav nrog cov atoms thiab ions tam sim no hauv kev sib koom ua ke nrog rau lawv cov nqi hluav taws xob. |
| nqi hluav taws xob | |
| Tus nqi hluav taws xob ntawm kev sib koom ua ke tsis tau hais txog hauv kev sib koom tes. | Tus nqi hluav taws xob ntawm kev sib koom ua ke tau hais hauv kev sib koom tes. |
Summary – Coordination Entity vs Coordination Sphere
Cov kev sib koom ua ke muaj cov hlau hauv nruab nrab lossis ion ncig los ntawm cov molecules lossis ions hu ua ligands. Cov ligands yog cov khoom siv hluav taws xob nplua nuj uas tuaj yeem pub cov khoom siv hluav taws xob rau cov hlau atom. lub koom haum kev sib koom tes thiab kev sib koom ua ke yog ob nqe lus uas tau tham txog kev sib koom ua ke. Qhov sib txawv ntawm qhov chaw sib koom ua ke thiab kev sib koom ua ke yog qhov chaw sib koom ua ke yog qhov sib sau ntawm lub hauv paus atom thiab cov ligands nyob ib puag ncig cov atom no whereas kev sib koom tes yog kev sib koom tes muab nrog hluav taws xob nqi ntawm kev sib koom ua ke.
