2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
qis tetraazoles, RCN4H, zoo li qis carboxylic acids, RCO2H, yog s soluble hauv dej thiab tsis tuaj yeem yooj yim crystalized los ntawm nws. tetrazoles qis dua yog crystallized zoo tshaj plaws los ntawm cov kuab tshuaj xws li ethyl acetate los yog toluene-pentane sib tov.
YPuas yog 1H tetrazole aromatic compound?
Structure and bonding
The 1H- and 2H- isomers yog tautomers, nrog rau qhov sib npaug ntawm 1H-tetrazole nyob rau theem khoom..
Puas yog tetrazole yooj yim?
Tsib Neeg Heterocycles
Nws yog a lub hauv paus tsis muaj zog heev nrog pKa ntawm -3.0 thiab protonation tshwm sim ntawm lub C4- txoj hauj lwm. Muaj tsis muaj zog nqus nyob rau hauv UV spectrum ntawm 5-hloov tetrazole hauv ethanol nyob ib ncig ntawm 200-220 nm. H NMR (D2O), δ (ppm): C5H, 9.5.
Vim li cas tetraazole yog cov kua qaub?
1.1.
Tetrazole qhia qhov kub ntawm qhov kub ntawm 155-157 ° C. … Qhov muaj N-H dawb ua rau cov kua qaub ntawm tetraazoles thiab tsim cov aliphatic thiab aromatic heterocyclic compounds. Heterocycles ntawm tetraazoles tuaj yeem tswj cov nqi tsis zoo los ntawm delocalization thiab qhia cov carboxylic acid pKa qhov tseem ceeb.
Cov tshuaj hauv qab no twg muaj tetrazole nucleus?
Qee cov tshuaj tetrazole xws li losartan, valsartan, irbesartanthiab candesartantwb tau siv rau kev kho mob ntshav siab hauv kev kho mob, ua kom pom lub peev xwm ntawm tetrazole derivatives li putative antihypertensive tshuaj [17].
Pom zoo:
Puas yog amphoteric oxide soluble hauv dej?
Amphoteric Oxides muaj cov yam ntxwv ntawm cov kua qaub thiab cov oxides yooj yim oxides Ib qho yooj yim oxide yog an oxide uas thaum ua ke nrog dej muab tawm lub hauv paus. Thaum ib yam tshuaj reacts chemically, ob qho tib si raws li lub hauv paus los yog acid nws hu ua amphoteric tov.
Puas yog sodium acetate soluble hauv dej?
Sodium acetate, NaCH₃COO, kuj hu ua NaOAc, yog sodium ntsev ntawm acetic acid. Cov ntsev tsis muaj xim tsis muaj xim no muaj ntau yam kev siv. YPuas yog sodium acetate soluble lossis insoluble? Comment on solubility: Soluble in water thiab ethanol.
Puas yog alkane soluble hauv dej?
Alkanes tsis soluble hauv dej, uas yog polar heev. Ob yam khoom tsis ua raws li cov txheej txheem ntawm solubility, uas yog, uas "zoo li dissolves nyiam." Cov dej molecules muaj zog heev attracted rau ib leeg los ntawm hydrogen bonds kom cia nonpolar alkanes plam ntawm lawv thiab yaj.
Puas yog farnesol soluble hauv dej?
Cov ntsiab lus ntawm ntau lub paj absolutes [CCD] Farnesol yog lub ntuj tsim cov organic uas yog acyclic sesquiterpene cawv pom ua kua tsis muaj xim. Nws is insoluble hauv dej, tab sis miscible nrog roj. YPuas Farnesol yog Terpenoid?
Puas yog anhydrides soluble hauv dej?
Acetic anhydride dissolves hauv dej rau kwv yees li 2.6% los ntawm qhov hnyav . Aqueous kev daws teeb meem tsis muaj kev ruaj ntseg vim hais tias, zoo li feem ntau cov kua qaub anhydrides, acetic anhydride hydrolyses muab carboxylic acids. Nyob rau hauv cov ntaub ntawv no, acetic acid yog tsim, cov tshuaj tiv thaiv cov khoom no yog tag nrho cov dej miscible:
