Qhov txawv ntawm borazine thiab diborane yog tias borazine muaj peb boron atoms ib molecule, whereas diborane muaj ob boron atoms ib molecule.
Borazine thiab diborane yog boron-muaj tshuaj lom neeg. Ob qho no yog cov sib txuas sib txuas nrog cov lej sib txawv ntawm cov tswv cuab lub nplhaib.
Borazine yog dab tsi?
Borazine yog cyclic, inorganic compound uas muaj cov tshuaj formula B3H6N3Nws yog lub voj voog sib txuas nrog rau lub nplhaib sib koom ua ke. Ntawd yog, nws muaj peb chav B-H thiab peb N-H chav nyob hauv kev hloov pauv. Yog li ntawd, peb tuaj yeem sau nws cov qauv tshuaj raws li (BH 3)(NH3). Tsis tas li ntawd, cov qauv no yog isoelectronic nrog lub nplhaib benzene. Zoo li benzene, qhov no kuj yog cov kua tsis muaj xim ntawm chav tsev kub. Yog li ntawd, qee zaum peb hu nws "inorganic benzene".
Daim duab 01: Cov qauv 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. Nws kuj muaj qhov tsw ntxhiab tsw. Ntxiv mus, qhov no yog cov khoom sib xyaw 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 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. Piv nrog 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.
Diborane yog dab tsi?
Diborane yog ib qho inorganic compound uas muaj cov tshuaj formula B2H6 Cov tshuaj no muaj boron thiab hydrogen atoms hauv cov qauv cyclic. Nws tshwm sim raws li cov pa tsis muaj xim thiab pyrophoric. Nws muaj ib tug repulsive qab zib tsw thiab. Cov molar loj ntawm diborane yog 27.67 g / mol.
Daim duab 02: Tus Qauv ntawm Diborane
Diborane raug suav tias yog ib qho hluav taws xob tsis muaj hluav taws xob. Qhov no yog vim hais tias nws tsis muaj valence electrons txaus los tsim ib qho kev sib cais ob-electron daim ntawv cog lus ntawm txhua khub ntawm atoms bonded. Ntxiv mus, nws yog vim li cas rau lub cyclic los yog bridged qauv ntawm diborane molecule.
Thaum xav txog cov khoom ntawm diborane, nws yog cov roj tsis muaj xim thiab nplaim taws kub ntawm chav tsev. Nws kuj yog ib qho pa phem. Thaum hlawv nyob rau hauv lub xub ntiag ntawm oxygen nyob rau hauv cov huab cua, diborane tuaj yeem tso tawm ntau lub zog. Thaum cov roj no tov nrog dej, nws sai sai hydrolyzes, muab boric acid thiab hydrogen gas.
Qhov txawv ntawm Borazine thiab Diborane yog dab tsi?
Qhov txawv ntawm borazine thiab diborane yog tias borazine muaj peb boron atoms ib molecule, whereas diborane muaj ob boron atoms ib molecule. Ntxiv mus, lwm qhov sib txawv ntawm borazine thiab diborane yog tias borazine yog cov kua tsis muaj xim, thaum diborane yog cov roj tsis muaj xim thiab nplaim taws. Tsis tas li ntawd, borazine yog tsim los ntawm cov tshuaj tiv thaiv ntawm diborane thiab ammonia thaum diborane yog tsim los ntawm cov tshuaj tiv thaiv ntawm hlau hydrides thiab boron.
Hauv qab no yog ib daim ntawv teev qhov sib txawv ntawm borazine thiab diborane.
Summary – Borazine vs Diborane
Borazine thiab diborane yog cov qauv kev sib tw. Qhov sib txawv tseem ceeb ntawm borazine thiab diborane yog tias borazine muaj peb boron atoms ib molecule, whereas diborane muaj ob boron atoms ib molecule.
