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CAS No.: | 1070-75-3 |
---|---|
Name: | dilithium acetylide |
Article Data: | 12 |
Molecular Structure: | |
Formula: | C2Li2 |
Molecular Weight: | 37.904 |
Synonyms: | Dilithioacetylene;Dilithium acetylide; Dilithium carbide; Lithium acetylide; Lithium carbide(Li2(C2)) |
Density: | g/cm3 |
Boiling Point: | °Cat760mmHg |
Flash Point: | °C |
Safety: | Ignites and burns vigorously in fluorine, chlorine, phosphorus, selenium, or sulfur vapors. Ignites when heated in bromine or iodine vapors. When heated to decomposition it emits acrid smoke and fumes. See also LITHIUM COMPOUNDS and ACETYLIDES. |
PSA: | 0.00000 |
LogP: | 0.38760 |
n-butyllithium
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
A
N-(α-methylbenzyl)pentylamine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: n-butyllithium; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine at 20℃; Stage #2: With methanol | A 80% B n/a |
thiophene
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: thiophene; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine With lithium diisopropyl amide In diethyl ether at 0 - 20℃; Stage #2: With methanol | A 78% B n/a |
2-Methylthiophene
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: 2-Methylthiophene; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine With lithium diisopropyl amide In diethyl ether at 0 - 20℃; Stage #2: With methanol | A 77% B n/a |
n-butyllithium
A
N-(α-methylbenzyl)pentylamine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: n-butyllithium; N-(α-methylbenzyl)-3-(trimethylsilyl)-2-propynylamine at 20℃; Stage #2: With methanol | A 71% B n/a |
n-butyllithium
N-(prop-2-yn-1-yl)cyclohexanamine
A
N,N-cyclohexyl-n-pentylamine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: n-butyllithium; N-(prop-2-yn-1-yl)cyclohexanamine at 20℃; Stage #2: With methanol | A 70% B n/a |
tetrachloromethane
lithium
B
ethenetetrayl-tetrakis-lithium
C
dilithium acetylide
Conditions | Yield |
---|---|
In neat (no solvent) reaction of an excess of gaseous Li with gaseous CCl4 at 800-1000°C (high vac.);; | A 10-18 B 61% C 20% |
Conditions | Yield |
---|---|
Stage #1: furan; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine With lithium diisopropyl amide In diethyl ether at 0 - 20℃; Stage #2: With methanol | A 58% B n/a |
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
tert.-butyl lithium
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine; tert.-butyl lithium at 20℃; Stage #2: With methanol | A 50% B n/a |
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
phenyllithium
A
N-benzyl-1-phenylethylamine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine; phenyllithium at 20℃; Stage #2: With methanol | A 39% B n/a |
2-thienyl lithium
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine
B
dilithium acetylide
Conditions | Yield |
---|---|
Stage #1: 2-thienyl lithium; N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine at 20℃; Stage #2: With methanol | A 38% B n/a |
IUPAC: Dilithium acetylide
Lithium acetylide with CAS NO.of 1070-75-3 is also called for EINECS 213-980-1 ; CID66115 ; 1070-75-3 ; 1,2-Dilithioacetylene ; Dilithioacetylene ; Ethyne-1,2-diylbislithium ; Ethynylenebislithium and so on.
CAS: 1070-75-3
Molecular Formula: C2Li2
Molecular Weight: 37.9034
EINECS: 213-980-1
ACD/LogP: 0.37
ACD/LogD (pH 5.5): 0.37
ACD/LogD (pH 7.4): 0.37
ACD/BCF (pH 5.5): 1.13
ACD/BCF (pH 7.4): 1.13
ACD/KOC (pH 5.5): 37.87
ACD/KOC (pH 7.4): 37.87
H bond acceptors: 0
H bond donors: 0
Freely Rotating Bonds: 0
Heavy Atom Count: 4
Formal Charge: 0
Complexity: 12
Isotope Atom Count: 0
Defined Atom StereoCenter Count: 0
Undefined Atom StereoCenter Count: 0
Defined Bond StereoCenter Count: 0
Undefined Bond StereoCenter Count: 0
Covalently-Bonded Unit Count: 3
Enthalpy of Vaporization: 21.12 kJ/mol
Vapour Pressure: 69700 mmHg at 25°C
Density: 1.3 g/cm3
Melting Point: > 550°C
The molecular structure of Lithium acetylide with CAS NO.of 1070-75-3:
Lithium acetylide (CAS NO.1070-75-3) can be used in radiocarbon dating.
Lithium acetylide (CAS NO.1070-75-3) can be prepared from the following two ways:
1.molten lithium + graphite are reacted at high temperature
2.carbon dioxide + molten lithium
Ignites and burns vigorously in fluorine, chlorine, phosphorus, selenium, or sulfur vapors. Ignites when heated in bromine or iodine vapors. When heated to decomposition it emits acrid smoke and fumes. See also LITHIUM COMPOUNDS and ACETYLIDES.
Lithium acetylide with CAS NO.of 1070-75-3 is an ionic salt, it will transform reversibly to a cubic anti-fluorite structure at high temperatures.