CAS Number · 110-18-9
Abbreviations TMEDA, TEMED
UN Nr. 2372
Lwm lub npe:
N, N, N', N'-Tetramethylethylenediamine
Tetramethylethylenediamine
N, N, N', N'-tetramethylethane-1, 2-diamine
1, 2-Bis (dimethylamino) ethane
Tetramethyldiaminoethane
Tetrameen
Propamine D
1,2-Ethanediamine, N, N, N', N'-tetramethyl-
N1,N1,N2,N2-Tetramethylethane-1,2-diamine
Tetramethyl ethylene diamine
Khoom Description
Tetramethylethylenediamine (TMEDA lossis TEMED) yog cov tshuaj sib xyaw nrog cov mis (CH3)2NCH2CH2N(CH3)2. Hom no yog muab los ntawm ethylenediamine los ntawm kev hloov ntawm plaub amine hydrogens nrog plaub pawg methyl. Nws yog cov kua uas tsis muaj xim, txawm tias cov qauv qub feem ntau tshwm daj. Nws tsw zoo ib yam li cov ntses rotting.
|
Cov khoom |
Tetramethylethylenediamine |
|
Tshuaj formula |
C6H16N2 |
|
Molar loj |
116.208 g · mol-1 |
|
Qhov tshwm sim |
Cov kua dej tsis muaj xim |
|
tsw |
Fishy, ammoniacal |
|
Qhov ntom |
0.7765 g mL−1 (ntawm 20 degree) |
|
Melting point |
-58.6 degree; -73.6 ° F; 2 14,5k |
|
Boiling point |
121.1 degree; 249.9 degree F; 3 94,2k |
|
Solubility hauv dej |
Miscible |
|
Acidity (pKa) |
8.97 |
|
Basicity (pKb) |
5.85 |
|
Refractive Index (nD) |
1.4179 (20 degree) |
daim ntawv thov
Raws li ib tug reagent nyob rau hauv synthesis
TMEDA yog dav siv raws li ligand rau hlau ions. Nws tsim cov complexes ruaj khov nrog ntau cov hlau halides, xws li zinc chloride thiab tooj liab (I) iodide, muab cov complexes uas yog soluble hauv cov kuab tshuaj organic. Nyob rau hauv xws li complexes, TMEDA ua hauj lwm raws li ib tug bidentate ligand.
Tetramethylethylenediamine muaj affinity rau lithium ions. Thaum sib xyaw nrog n-butyllithium, TMEDA lub nitrogen atoms koom tes rau lub lithium, tsim ib pawg ntawm reactivity ntau dua li cov tetramer los yog hexamer uas n-butyllithium ib txwm siv. BuLi/TMEDA muaj peev xwm metallate los yog ob zaug metallate ntau substrates xws li benzene, furan, thiophene, N-alkylpyrroles, thiab ferrocene.[4] Ntau cov anionic organometallic complexes tau raug cais raws li lawv [Li(tmeda)2]+ complexes.[5] Hauv cov complexes [Li(tmeda)2]+ coj zoo li quaternary ammonium ntsev, xws li [NET4]+.
Tetramethylethylenediamine adduct ntawm lithium bis (trimethylsilyl) amide Daim ntawv ceeb toom tias diamine yog bidentate ligand.
sec-Butyllithium / TMEDA yog ib qho tseem ceeb ua ke hauv cov organic synthesis qhov twg n-butyl analogue ntxiv rau substrate. TMEDA tseem muaj peev xwm tsim cov hlau ua haujlwm nrog Li hauv qhov no raws li tau hais los saum toj no.
siv
Cov complexes (TMEDA)Ni(CH3)2 thiab [(TMEDA)Ni(o-tolyl)Cl] qhia txog kev siv tmeda kom stabilize homogeneous catalysts.
Ntim: 160kg / nruas
Kev xa khoom: Hiav txwv lossis huab cua
N, N, N', N'-Tetramethylethylenediamine (TMEDA) Cia
Tightly kaw kom tsis txhob ntws thiab kov dej. Khaws rau hauv qhov chaw txias, qhov cua thiab qhuav, deb ntawm qhov hluav taws kub thiab cua sov.
peb lub luag haujlwm
Kev txawj ntse thiab kev ruaj ntseg zoo: Peb txoj kev cog lus rau kev xa cov khoom zoo yog rov qab los ntawm ntau tshaj kaum xyoo ntawm kev lag luam kev lag luam, muab cov neeg siv khoom ntseeg siab rau peb cov kev txawj ntse.
Kev xa khoom sai, ruaj ntseg, thiab tsis pom kev: Peb muab cov khoom xa tuaj sai, nyab xeeb, thiab tsis pom kev los xyuas kom cov neeg siv khoom muaj kev thaj yeeb nyab xeeb.
Cov Neeg Siv Khoom Kev Ntseeg thiab Kev Ruaj Ntseg Nyiaj Txiag: Peb qhov kev mob siab rau cov neeg siv khoom ntseeg siab tshaj qhov khoom zoo. Cov neeg siv khoom tuaj yeem tso siab rau peb los tiv thaiv lawv cov txiaj ntsig nyiaj txiag thiab kev lag luam kev sib raug zoo.
Cim npe nrov: Tuam Tshoj tetramethylethylenediamine manufacturers, lwm tus neeg, Hoobkas
