Tautomers yog cov qauv isomers ntawm cov tshuaj sib txuas uas nkag tau yooj yim. Cov tshuaj tiv thaiv no feem ntau ua rau kev hloov chaw ntawm hydrogen atom. Tautomerism yog piv txwv cuam tshuam rau tus cwj pwm ntawm cov amino acids thiab nucleic acids, ob ntawm lub hauv paus tsev thaiv ntawm lub neej.
Tautomerism nrog piv txwv yog dab tsi?
Tautomerism yog ib qho tshwm sim uas ib qho tshuaj lom neeg muaj nyob rau hauvhauv ob lossis ntau qhov kev hloov pauv uas sib txawv ntawm cov txheeb ze ntawm ib qho atomic nucleus uas feem ntau yog hydrogen. … Thaum cov tshuaj tiv thaiv tshwm sim ntawm cov tebchaw no tsuas yog hloov ntawm protons xwb.
Tautomerism txhais li cas hauv chemistry?
tautomerism, qhov muaj nyob ntawm ob lossis ntau dua cov tshuaj lom neeg uas muaj peev xwm ua tau yooj yim hloov pauv, ntau zaus tsuas yog pauv cov hydrogen atom ntawm ob lub atoms, rau ib qho ntawm nws. tsim ib daim ntawv cog lus covalent.
Puas yog khub niam txiv?
Cov khub tautomeric feem ntau suav nrog:
- ketone – enol: H−O−C=C ⇌ O=C–C–H, see keto–enol tautomerism.
- enamine – imine: H−N–C=C ⇌ N=C–C–H. …
- amide – imidic acid: H−N−C=O ⇌ N=C−O–H (piv txwv li, tom kawg yog ntsib thaum lub sij hawm nitrile hydrolysis tshua) …
- imine - imine, piv txwv li, thaum lub sij hawm pyridoxal phosphate catalyzed enzymatic cov tshuaj tiv thaiv.
Tus tautomer hauv organic chemistry yog dab tsi?
Tautomer: Ib yam molecule nyob rau hauv ib pawg ntawm kev cai lij choj isomers uas muaj kev xav cuam tshuam los ntawm kev hloov pauv ntawm hydrogen atom thiab ib lossis ntau dua pi bonds.
