Qhov txawv ntawm borazine thiab benzene yog tias borazine muaj peb boron atoms thiab peb nitrogen atoms nyob rau hauv lub nplhaib qauv whereas lub benzene muaj rau carbon atoms nyob rau hauv lub nplhaib qauv..
Ob leeg borazine thiab benzene muaj cov qauv zoo sib xws nrog rau lub nplhaib rau-tus tswv cuab, thiab ob lub tebchaw no yog isoelectronic. Qhov ntawd txhais tau tias, ob qho tib si borazine thiab benzene muaj tib tus lej ntawm cov hluav taws xob lossis cov qauv hluav taws xob tib yam. Txawm li cas los xij, lawv muaj cov tshuaj lom neeg thiab lub cev sib txawv kiag li vim tias cov nplhaib ntawm cov tshuaj no muaj cov atom sib txawv.
Borazine yog dab tsi?
Borazine yog ib qho inorganic compound uas muaj cov tshuaj formula B3H6N3Nws yog ib tug cyclic compound nrog ib tug rau-tus tswv cuab lub nplhaib qauv. Ntawd yog, nws muaj peb chav B-H thiab peb N-H chav nyob hauv kev hloov pauv. Yog li, peb tuaj yeem sau nws cov qauv tshuaj raws li (BH3)(NH3). Tsis tas li ntawd, cov qauv no yog isoelectronic nrog lub nplhaib benzene. Raws li zoo li benzene, qhov no kuj yog cov kua tsis muaj xim ntawm chav tsev kub. Yog li ntawd, qee zaum peb hu nws ua "inorganic benzene".
Daim duab 01: Cov Qauv Tshuaj ntawm Borazine
Tsis tas li ntawd, cov molar loj ntawm borazine yog 80.50 g / mol. Lub melting point thiab boiling point yog -58 ° C thiab 53 ° C feem. Tsis tas li ntawd, nws muaj ntxhiab tsw ntxhiab. Ntxiv mus, qhov no yog ib qho khoom siv hluavtaws uas peb tuaj yeem tsim los ntawm diborane thiab ammonia ntawm 1: 2 ratio.
Cov tshuaj tiv thaiv kev cuam tshuam hauv cov txheej txheem no yog raws li hauv qab no:
3 B2H6 + 6 NH3 → 2 B 3H6N3 + 122
Qhov tseem ceeb tshaj, yog tias peb ntxiv borazine rau hauv dej, nws yuav hydrolyze muab boric acid, ammonia thiab hydrogen gas. Tsis tas li ntawd, qhov sib xyaw no yog thermally ruaj khov vim nws cov qauv qis enthalpy hloov ntawm kev tsim; -531 kJ/mol. Tsis tas li ntawd, piv rau benzene, borazine muaj ntau dua reactive. Piv txwv li, nws tuaj yeem cuam tshuam nrog hydrogen chloride thaum benzene tsis tuaj yeem.
Raws li kev txiav txim siab X-ray crystallographic, cov ntawv cog lus ntev hauv lub nplhaib qauv ntawm borazine yog sib npaug. Txawm li cas los xij, nws tsis tuaj yeem tsim lub hexagon zoo meej vim tias cov qauv hloov pauv ntawm nitrogen thiab boron muab cov kab sib txawv sib txawv thiab yog li, qhov sib txawv molecular symmetry.
Benzene yog dab tsi?
Benzene yog cov organic compound uas muaj cov tshuaj formula C6H6 Nws muaj rau lub nplhaib sib koom nrog txhua tus tswv cuab yog carbon atoms. Ntawm no, txhua yam ntawm cov pa roj carbon atom txuas nrog hydrogen atom. Txij li cov compound no tsuas muaj carbon thiab hydrogen atoms, nws yog hydrocarbon. Qhov tseem ceeb tshaj, qhov sib xyaw ua ke no tshwm sim raws li cov khoom siv roj av.
Daim duab 02: Ntau Cov Lus Qhia ntawm Benzene
Saib ntawm lawv cov khoom, cov molar loj ntawm benzene yog 78.11 g / mol. Lub melting point thiab boiling point yog 5.53 ° C thiab 80.1 ° C feem. Tsis tas li ntawd, nws yog cov kua xim tsis muaj xim ntawm chav tsev kub. Tsis tas li ntawd, nws yog ib qho aromatic hydrocarbon. Yog li ntawd, nws muaj ib tug aromatic tsw. Ntxiv mus, raws li kev txiav txim siab X-ray diffraction, tag nrho cov kev sib cog lus ntawm 6 carbon atoms muaj qhov ntev zoo sib xws. Yog li ntawd, nws muaj cov qauv nruab nrab. Peb hu nws ua "hybrid qauv" vim hais tias raws li daim ntawv cog lus tsim, yuav tsum muaj kev sib hloov ib daim ntawv cog lus thiab ob daim ntawv cog lus ntawm cov pa roj carbon atoms. Tom qab ntawd, cov qauv benzene tiag tiag yog tshwm sim los ntawm ntau cov qauv resonance ntawm benzene molecule.
Dab tsi yog qhov Zoo sib xws ntawm Borazine thiab Benzene?
- Ob leeg yog cov qauv kev sib tw.
- Kuj, ob qho tib si, borazine thiab benzene, muaj rau lub nplhaib sib koom ua ke.
- Ntxiv mus, ob qho tib si muaj qhov sib npaug ntawm qhov sib npaug ntawm cov atoms ntawm lub nplhaib.
- Tsis tas li ntawd, ob qho tib si yog cov kua tsis muaj xim ntawm chav tsev kub.
- Ob leeg yog isoelectronic ib yam nkaus.
Qhov txawv ntawm Borazine thiab Benzene yog dab tsi?
Borazine yog ib qho inorganic compound uas muaj cov tshuaj formula B3H6N3 whereas Benzene yog cov organic compound uas muaj cov tshuaj formula C6H6 Yog li, qhov sib txawv tseem ceeb ntawm borazine thiab benzene yog tias borazine muaj peb boron atoms thiab peb nitrogen atoms nyob rau hauv lub nplhaib qauv whereas benzene muaj rau carbon atoms nyob rau hauv lub nplhaib qauv. Hauv borazine, boron thiab nitrogen atoms nyob rau hauv ib qho kev sib hloov. Yog li ntawd, borazine molecule tsis yog ib tug zoo meej hexagon, tab sis benzene tsuas muaj carbon atoms nyob rau hauv lub nplhaib. Yog li, nws tuaj yeem tsim ib lub hexagon zoo meej. Li no, peb tuaj yeem xav txog qhov no yog lwm qhov sib txawv ntawm borazine thiab benzene.
Qhov tseem ceeb tshaj plaws, qhov sib txawv tseem ceeb ntawm borazine thiab benzene yog tias borazine yog cov khoom siv hluavtaws thaum lub benzene ib txwm tshwm sim hauv cov roj crude ua cov khoom tseem ceeb. Tsis tas li ntawd, peb tuaj yeem txheeb xyuas qhov sib txawv ntawm borazine thiab benzene raws li lawv cov reactivity thiab. Piv txwv li, borazine yog reactive dua li benzene.
Summary – Borazine vs Benzene
Borazine thiab benzene yog isoelectronic; txhais tau hais tias lawv muaj tib tus lej ntawm electrons lossis tib lub qauv hluav taws xob. Tab sis, lawv yog ob qhov sib txawv. Thiab, qhov sib txawv tseem ceeb ntawm borazine thiab benzene yog tias borazine muaj peb boron atoms thiab peb nitrogen atoms nyob rau hauv lub nplhaib qauv whereas lub benzene muaj rau carbon atoms nyob rau hauv lub nplhaib qauv.
