Qhov sib txawv tseem ceeb ntawm cyclobutane thiab cyclopropane yog tias cyclobutane yog cov qauv cyclic muaj plaub carbon atoms nyob rau hauv lub nplhaib qauv whereas cyclopropane yog ib tug cyclic qauv uas muaj peb carbon atoms nyob rau hauv ib lub nplhaib qauv.
Cyclobutane thiab cyclopropane yog ob lub tebchaw organic uas muaj lub nplhaib nrog cov pa roj carbon atoms teem rau hauv ib lub voj voog. Qhov txawv ntawm cyclobutane thiab cyclopropane nyob ntawm seb muaj pes tsawg tus carbon atoms hauv lub nplhaib.
YCyclobutane yog dab tsi?
Cyclobutane yog cov organic cyclic compound uas muaj cov tshuaj formula (CH2)4Nws tshwm sim raws li cov roj tsis muaj xim, uas yog muag raws li cov roj liquefied. Cov molar loj ntawm cov tshuaj no yog 56 g / mol. Lub melting point ntawm no compound yog -91 ° C thaum lub boiling point 12.5 ° C. Thaum txiav txim siab qhov sib npaug ntawm qhov sib txuas ntawm qhov sib xyaw no, muaj qhov sib txawv tseem ceeb ntawm cov pa roj carbon atoms. Vim lub nplhaib no, cov qauv cyclobutane muaj qis zog zog piv rau nws cov qauv linear lossis cov qauv tsis muaj zog. Txawm li cas los xij, cov molecule cyclobutane tsis ruaj khov ntawm qhov kub siab tshaj 500 ° C.
Daim duab 01: Kev hloov pauv ntawm cov qauv Puckered
Muaj plaub cov pa roj carbon atom hauv cov qauv cyclic; Feem ntau, cov plaub carbon atoms no tsis tsim cov qauv coplanar. Nws tshwm sim raws li folded, "puckered" conformation. Hauv qhov kev sib piv no, qee qhov kev sib cuam tshuam dab tsi raug txo. Muaj ntau ntau txoj hauv kev los npaj cyclobutene, tab sis qhov ntxov tshaj plaws thiab cov txiaj ntsig zoo tshaj plaws yog hydrogenation ntawm cyclobutene nyob rau hauv lub xub ntiag ntawm npib tsib xee raws li catalyst.
YCyclopropane yog dab tsi?
Cyclopropane yog cov organic cyclic compound uas muaj cov tshuaj formula (CH2)3 Nws muaj peb carbon atoms txuas rau ib leeg., tsim ib lub nplhaib qauv, thiab txhua carbon atoms nyob rau hauv lub nplhaib no dais ob hydrogen atoms. Lub molecular symmetry ntawm no molecule yuav txhais tau tias D3h symmetry. Tsis tas li ntawd, muaj lub nplhaib siab vim yog lub nplhaib me me.
Cyclopropane tshwm sim raws li cov roj tsis muaj xim uas muaj ntxhiab tsw qab. Cov molar mass ntawm no compound yog 42 g / mol. Lub melting point ntawm no compound yog -128 ° C thaum lub boiling point -33 ° C. Ntxiv mus, cyclopropane tuaj yeem ua tshuaj loog thaum nqus tau.
Daim duab 02: Ib Cyclopropane
Apart from lub nplhaib strain, uas tshwm sim vim qhov txo qis cov ces kaum, kuj muaj torsional strain vim yog eclipsed conformation. Yog li ntawd, cov tshuaj bonds nyob rau hauv cov qauv no yog comparatively tsis muaj zog tshaj cov coj alkane. Txoj kev ntxov tshaj plaws ntawm kev tsim cov cyclopropane yog los ntawm Wurtz coupling.
Qhov txawv ntawm Cyclobutane thiab Cyclopropane yog dab tsi?
Cyclobutane thiab cyclopropane yog cov organic tebchaw uas muaj carbon atoms teem rau hauv ib lub voj voog. Qhov sib txawv tseem ceeb ntawm cyclobutane thiab cyclopropane yog tias cyclobutane yog cov qauv cyclic uas muaj plaub carbon atoms nyob rau hauv lub nplhaib qauv whereas cyclopropane yog ib tug cyclic qauv uas muaj peb carbon atoms nyob rau hauv lub nplhaib qauv.
Ntxiv mus, ob qho tib si cov qauv no qhia lub nplhaib vim qhov txo qis ntawm cov ces kaum, tab sis lub nplhaib strain hauv cyclopropane ntau dua li ntawm cyclobutane vim yog lub kaum sab xis qis. Tsis tas li ntawd, muaj qhov torsional strain nyob rau hauv cyclopropane vim eclipsed conformation ntawm hydrogen atoms. Yog li, qhov no yog lwm qhov sib txawv ntawm cyclobutane thiab cyclopropane. Thaum xav txog txoj kev npaj, qhov ntxov tshaj plaws thiab cov txiaj ntsig zoo tshaj plaws ntawm kev tsim cyclobutane yog hydrogenation ntawm cyclobutene nyob rau hauv lub xub ntiag ntawm npib tsib xee raws li catalyst, thaum ntxov tshaj txoj kev ntawm zus tau tej cov cyclopropane yog los ntawm Wurtz coupling.
Hauv qab infographic qhia ntau qhov sib piv ntawm qhov sib txawv ntawm cyclobutane thiab cyclopropane.
Summary – Cyclobutane vs Cyclopropane
Cyclobutane thiab cyclopropane yog cov organic tebchaw uas muaj cov qauv nplhaib nrog carbon atoms teem rau hauv ib lub voj voog. Qhov sib txawv tseem ceeb ntawm cyclobutane thiab cyclopropane yog tias cyclobutane yog cov qauv cyclic muaj plaub carbon atoms nyob rau hauv lub nplhaib qauv whereas cyclopropane yog ib tug cyclic qauv uas muaj peb carbon atoms nyob rau hauv lub nplhaib qauv.
