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Conditions | Yield |
---|---|
92.6% | |
92.6% | |
In diethylene glycol | 46% |
Conditions | Yield |
---|---|
aluminium trichloride In further solvent(s) (N2), powder of (NH4)2SO4 treated with soln. of NaBH4 in tetraglyme, stirred for 6 h at 140°C catalized by AlCl3; | 67% |
In further solvent(s) byproducts: Na2SO4, H2; absence of air and moisture; heating in tetraglyme to 135°C (over 1 h), then 1 h at 135°C, continuous distn. off of borazine and H2 at 2-5 Torr; condensation in trap at liquid-N2 temp., fractional low-temp. distn. (collection at -78°C); | 59.9% |
In further solvent(s) byproducts: Na2SO4, H2; absence of air and moisture; stepwise addn. of solid mixt. of educt into tetraglyme at 135°C, heating to 135°C for 2 h; condensation in trap at liquid-N2 temp., fractional low-temp. distn. (collection at -78°C); | 53.8% |
ammonia borane complex
borazine
Conditions | Yield |
---|---|
In further solvent(s) byproducts: H2; absence of air and moisture; slow addn. of solid H3NBH3 into tetraglymeat 140-160°C (over 3 h), distn. off of H2 and product (2-5 Torr); condensation in trap at liquid-N2 temp., fractional low-temp. distn. (collection at -78°C); | 67% |
With nickel at 80℃; under 30 Torr; for 6h; Inert atmosphere; | 53% |
In 1,2-dimethoxyethane |
Conditions | Yield |
---|---|
65% | |
65% | |
In dibutyl ether under N2; exclusion of moisture (drybox); B-trichloroborazine was suspended in the dry solvent; soln. of LiBH4 was added to the slurry over 2 h; crude borazine was distilled into a dry-ice condenser; several line transfers; fractional distillation; identified by IR; (1)H-NMR; boiling point;; |
borazine
Conditions | Yield |
---|---|
[Re(NO)(η(2)-H2)Br2(PiPr3)2] In 1,4-dioxane byproducts: H2; at 45°C for 24 h, or at 85°C for 1 h; | 65% |
chloro(1,5-cyclooctadiene)rhodium(I) dimer In further solvent(s) byproducts: H2; at 45°C for 72 h in tetraglime; NMR; | 10% |
chloro(1,5-cyclooctadiene)rhodium(I) dimer In diethylene glycol dimethyl ether byproducts: H2; at 45°C for 72 h; NMR; | 10% |
diborane
borazine
Conditions | Yield |
---|---|
With ammonia byproducts: H2; quickly heating at 250-300°C; | 47% |
With NH3 byproducts: H2; quickly heating at 250-300°C; | 47% |
With ammonia byproducts: H2; heating at 200°C and 11 atm; 15 min; | 41.5% |
borazine
Conditions | Yield |
---|---|
heating at 200°C 5 min; | 45% |
heating at 200°C 5 min; | 45% |
byproducts: H2; at 200°C 5 min; | >99 |
Conditions | Yield |
---|---|
40% | |
40% |
Conditions | Yield |
---|---|
In solid byproducts: H2; heated in Schlenk vessel up to 470 K; held at this temp. for 6 h before slowly cooled down; monitored by NMR spectroscopy; | A n/a B 40% |
borazine
Conditions | Yield |
---|---|
With ammonia heating at 200°C; | 40% |
With NH3 heating at 200°C; | 40% |
at 200°C in sealed tube; | |
at 200°C in sealed tube; |
Borazine ,its CAS register number is 6569-51-3,it's called for 1,3,5,2,4,6-Triazatriborine, hexahydro- ; Borazole ; Borazyne, cyclic trimer ; Hexahydro-s-triazaborine ; s-Triazaborane ; s-Triazatriborine, hexahydro- ; Hexahydro-s-triazaborine ; 1,3,5,2,4,6-triazatriborinane ; CHEBI:33119 ; CID138768 ,and so on.
IUPAC Name: 1,3,5,2,4,6-triazatriborinane
CAS: 6569-51-3
Molecular Formula: B3H6N3
Molecular Weight: 80.5
Molecular structure:
Storage temp.: below 5° C
H bond acceptors: 3
H bond donors: 3
Freely Rotating Bonds: 0
Enthalpy of Vaporization: 29.62 kJ/mol
Boiling Point: 53 °C at 760 mmHg
Vapour Pressure: 259 mmHg at 25°C
Borazine (CAS No.6569-51-3) can be used for organic synthesis.
Borazine (CAS No.6569-51-3) can be synthesized by one-step reaction methods:
1. 3 B2H6 + 6 NH3 → 2 B3H6N3 + 12 H2
2. 3 LiBH4 + 3 NH4Cl → B3H6N3 + 3 LiCl + 9 H2
Borazine (CAS No.6569-51-3) also can be synthesized by two-step reaction method:
3 BCl3 + 3 NH4Cl → Cl3B3H3N3 + 9 HCl
2 Cl3B3H3N3 + 6 NaBH4 → 2 B3H6N3 + 3 B2H6 + 6 NaCl
A powerful irritant to skin, eyes, and mucous membranes. May explode spontaneously when stored in the light. Reacts with water to form toxic and flammable boron hydrides. A dangerous fire hazard. When heated to decomposition it emits toxic fumes of NOx.
Risk Statements: 15-34 (R15:Contact with water liberates extremely flammable gases. R34:Causes burns.)
Safety Statements: 7-23-26-36-43 (S7:Keep container tightly closed. S23:Do not breathe vapour. S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36:Wear suitable protective clothing. S43:In case of fire use ... (there follows the type of fire-fighting equipment to be used.))
RIDADR: 1992
TSCA: No
HazardClass: 3.1
PackingGroup: II
Removal in wastewater treatment of Borazine (CAS No.6569-51-3) can be stated as follows:
Total removal:1.85 percent
Total biodegradation:0.09 percent
Total sludge adsorption:1.75 percent
Total to Air:0.00 percent
(using 10000 hr Bio P,A,S)