Lithium acetylide supplier | CasNO.1070-75-3

Name
dilithium acetylide
EINECS
CAS No. 1070-75-3
Article Data12
CAS DataBase
Density g/cm³
Solubility
Melting Point
Formula C2Li2
Boiling Point °Cat760mmHg
Molecular Weight 37.904
Flash Point °C
Transport Information
Appearance
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.
Risk Codes
Molecular Structure
Hazard Symbols
Synonyms Dilithioacetylene;Dilithium acetylide; Dilithium carbide; Lithium acetylide; Lithium carbide(Li2(C2))
PSA 0.00000
LogP 0.38760

Synthetic route

: 109-72-8, 29786-93-4
n-butyllithium

: 56862-34-1
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine

A: 149529-74-8
N-(α-methylbenzyl)pentylamine

B: 1070-75-3
dilithium acetylide

Conditions

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

...Expand

: 188290-36-0
thiophene

: 56862-34-1
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine

A: N,N'-(thiophene-2,5-diylbis(methylene))bis(α-methylbenzylamine)

B: 1070-75-3
dilithium acetylide

Conditions

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

...Expand

: 554-14-3
2-Methylthiophene

: 56862-34-1
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine

A: N-(α-methylbenzyl)(5-methylthiophen-2-yl)methylamine

B: 1070-75-3
dilithium acetylide

Conditions

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

...Expand

: 109-72-8, 29786-93-4
n-butyllithium

: N-(α-methylbenzyl)-3-(trimethylsilyl)-2-propynylamine

A: 149529-74-8
N-(α-methylbenzyl)pentylamine

B: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
Stage #1: n-butyllithium; N-(α-methylbenzyl)-3-(trimethylsilyl)-2-propynylamine at 20℃; Stage #2: With methanol	A 71% B n/a

...Expand

: 109-72-8, 29786-93-4
n-butyllithium

: 18292-76-7
N-(prop-2-yn-1-yl)cyclohexanamine

A: 35152-42-2
N,N-cyclohexyl-n-pentylamine

B: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
Stage #1: n-butyllithium; N-(prop-2-yn-1-yl)cyclohexanamine at 20℃; Stage #2: With methanol	A 70% B n/a

...Expand

: 56-23-5
tetrachloromethane

: 7439-93-2
lithium

A: CLi4

B: 38827-81-5
ethenetetrayl-tetrakis-lithium

C: 1070-75-3
dilithium acetylide

Conditions

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%

...Expand

: 110-00-9
furan

: 56862-34-1
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine

A: N,N'-(furan-2,5-diylbis(methylene))bis(α-methylbenzylamine)

B: 1070-75-3
dilithium acetylide

Conditions

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

...Expand

: 56862-34-1
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine

: 594-19-4
tert.-butyl lithium

A: N-(α-methylbenzyl)-2,2-dimethylpropylamine

B: 1070-75-3
dilithium acetylide

Conditions

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

...Expand

: 56862-34-1
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine

: 591-51-5
phenyllithium

A: 3193-62-2, 17480-69-2, 19302-20-6, 38235-77-7
N-benzyl-1-phenylethylamine

B: 1070-75-3
dilithium acetylide

Conditions

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

...Expand

: 2786-07-4
2-thienyl lithium

: 56862-34-1
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine

A: (RS)-N-(thiophen-2-ylmethyl)-N-(α-methylbenzyl)amine

B: 1070-75-3
dilithium acetylide

Conditions

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

...Expand

: 2786-02-9
2-lithiofuran

: 56862-34-1
N-(1-phenylethyl)-N-(prop-2-yn-1-yl)amine

A: 161119-98-8
(RS)-N-(furan-2-ylmethyl)-N-(α-methylbenzyl)amine

B: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
Stage #1: 2-lithiofuran; 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 29% B n/a

...Expand

: 917-54-4
methyllithium

A: 34557-54-5
methane

B: 21473-62-1
dilithiomethane

C: 69815-14-1
propadienetetrayl-tetrakis-lithium

D: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
at 223 - 226℃; Yield given. Yields of byproduct given;

...Expand

: 65801-58-3, 75620-60-9, 171562-29-1
cis-1,2-Dilithioethylen

A: 917-57-7
vinyllithium

B: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
Title compound not separated from byproducts;

: 65801-58-3, 75620-60-9, 171562-29-1
trans-1,2-Dilithioethylen

A: 917-57-7
vinyllithium

B: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
Title compound not separated from byproducts;

: 70277-75-7
lithium acetylide

A: 917-57-7
vinyllithium

B: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
With dilithiumethylene Title compound not separated from byproducts;

: 79-01-6
Trichloroethylene

: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran; diethyl ether for 2h; Ambient temperature;
With n-butyllithium In tetrahydrofuran

: 74-86-2
acetylene

: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
With n-butyllithium In hexane at -10℃; for 0.75h; Yield given;

: graphite

: lithium chloride

: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
In melt Electrolysis; graphite electrodes, graphite dissoln. in molten Li (temp.>600°C);

: graphite

: 7439-93-2
lithium

: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
In neat (no solvent, solid phase) heated at 900°C for 12 h in Nb ampoule;

: 109-72-8, 29786-93-4
n-butyllithium

: 74-86-2
acetylene

: 1070-75-3
dilithium acetylide

Conditions

Conditions	Yield
In hexane inert atmosphere, diln. of soln. of n-BuLi with freshly distilled hexane, cooling to -15°C, passing of HCCH through the soln. at a temp. below -10°C, further bubbling of HCCH through the soln. (0.5 h), warming to room temp., reflux (2 h); filtration, reduction of volume (vacuum), washing (hexane), filtration, drying (60°C, 0.5 Torr), yield 82%;

: niobium

: 10026-12-7
niobium pentachloride

: 1070-75-3
dilithium acetylide

: Li(1+)*Nb6Cl19(1-)=LiNb6Cl19

Conditions

Conditions	Yield
In melt byproducts: LiCl, NbCl4; compds. melted in quartz-glass ampoule at 530°C for 15 h; slowly (36 h) cooled to 300°C, washed with i-PrOH;	90%

...Expand

: 5586-42-5
1,5-dichlorodecamethylpentasilane

: 1070-75-3
dilithium acetylide

: 129415-88-9
3,3,4,4,5,5,6,6,7,7-decamethyl-3,4,5,6,7-pentasilacycloheptyne

Conditions

Conditions	Yield
	80%

: 1070-75-3
dilithium acetylide

: 155166-24-8
(diethylamino)dimethylsilyl-triflat

: Bis<(diethylamino)dimethylsilyl>ethin

Conditions

Conditions	Yield
In diethyl ether for 0.5h; Ambient temperature;	78%

: 1066-45-1
trimethyltin(IV)chloride

: 1070-75-3
dilithium acetylide

: 2117-50-2
bis(trimethyltin)acetylene

Conditions

Conditions	Yield
In pentane byproducts: LiCl; inert atmosphere, addn. of soln. of (CH3)3SnCl to suspension of Li2C2 at-25°C (40 min), warming to room temp., reflux (1 h); filtration from LiCl, concn., recrystn. (pentane, -78°C), drying (40°C, 5 Torr);	76%

: 1070-75-3
dilithium acetylide

: 107175-49-5
6-hepten-1-yl iodide

: 188525-80-6
1,15-hexadecadien-8-yne

Conditions

Conditions	Yield
In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide rt, 16 h; reflux, 2 h;	72%

: 89031-84-5
3-(tert-butyldimethylsilyloxy)propyl bromide

: 1070-75-3
dilithium acetylide

: 61362-77-4
1-(tert-butyldimethylsilyloxy)-4-pentyne

Conditions

Conditions	Yield
In dimethyl sulfoxide at 0℃;	68.5%

: 796-62-3
POC6H2-2,4,6-t-Bu3

: 1070-75-3
dilithium acetylide

: C38H58Cl2O2P2

Conditions

Conditions	Yield
In diethyl ether at 25℃; for 3h;	66%

: 754-75-6
1,4-dichloropermethyltetrasilane

: 1070-75-3
dilithium acetylide

: 138542-16-2
octamethyltetrasilacyclohexyne

Conditions

Conditions	Yield
	65%

: 1066-44-0
trimethyltin bromide

: 1070-75-3
dilithium acetylide

: 2117-50-2
bis(trimethyltin)acetylene

Conditions

Conditions	Yield
In pentane Ar atmosphere, addn. of soln. of (CH3)3SnBr to suspension of Li2C2 at -25°C (40 min), warming to room temp., reflux (1 h); filtration from LiCl, concn., recrystn. (pentane, -78°C), drying (40°C, 5 Torr);	64%

: 1070-75-3
dilithium acetylide

: 172538-40-8
1,2-bis<2-(chlorodimethylsilyl)ethyl>-1,1,2,2-tetramethyldisilane

: 172538-42-0
3,3,6,6,7,7,10,10-octamethyl-3,6,7,10-tetrasilacyclodecyne

Conditions

Conditions	Yield
In tetrahydrofuran Ambient temperature;	62.2%

: tetra(μ-N,N'-2-anilinopyridinate)diruthenium(II,III) chloride

: 1070-75-3
dilithium acetylide

: bis((tetraμ-N,N'-2-anilinopyridinate)diruthenium(II,III))ethynediyl

Conditions

Conditions	Yield
In tetrahydrofuran (Ar), at room temp. for 12 h; washed (brine), evapd., rinzed (CH2Cl2), recrystd.(THF), elem. anal.;	42%

: Ru2(2-anilinopyridinate)4Cl

: 1070-75-3
dilithium acetylide

: bis((tetraμ-N,N'-2-anilinopyridinate)diruthenium(II,III))ethynediyl

Conditions

Conditions	Yield
In tetrahydrofuran under Ar atm. using Schlenk techniques; LiCCLi transferred to THF soln. of Ru complex; stirred at room temp. overnight; to the ice-chilled soln. added satd. aq. soln. of NaCl; org. layer sepd.; washed aq. satd. soln. of NaCl; dried (Na2SO4); solvent removed; ppt. collected by filtration; washed (CH2Cl2); residue dried (vac.) overnight; elem. anal.;	42%

: 172538-41-9
1,2-bis[2-(chlorodimethylgermyl)ethyl]-1,1,2,2-tetramethyldigermane

: 1070-75-3
dilithium acetylide

: 172538-43-1
3,3,6,6,7,7,10,10-octamethyl-3,6,7,10-tetragermacyclodecyne

Conditions

Conditions	Yield
In tetrahydrofuran mixing of solns. of Li salt and Ge compound (room temp., 5 h), stirring (overnight); Kugelrohr distillation;	23%

: 1271-19-8
bis(cyclopentadienyl)titanium dichloride

: 1070-75-3
dilithium acetylide

: 594-09-2
trimethylphosphane

: 142895-81-6
μ-(η1:η1-ethendiylidnene)-bis{bis(η5-cyclopentadienyl)(trimethylphosphane)titanium}

Conditions

Conditions	Yield
With Mg In tetrahydrofuran Ar atmosphere; addn. of Li2C2 in THF to soln. of Ti compd. in THF (20°C), stirring (20°C, 12 h), addn. of PMe3 and Mg, warming (27°C), stirring (24 h); removal of solvent (0.5 Torr), addn. of toluene, filtration, removal of toluene (0.5 Torr), addn. of THF, standing (2 d), sepn., drying (Ar stream); not pure;	20%

...Expand

: V(C6H2(CH3)3)3C4H8O*0.25C4H8O

: 1070-75-3
dilithium acetylide

: Dilithium-μ-ethindiyl-hexamesityl-divanadat-terahydrofuran(1/8)

Conditions

Conditions	Yield
With THF In tetrahydrofuran 30 min stirring, under Ar; concg., pptn. with diethylether, washing with ether, drying in vac.; elem.anal.;	18%

: 1066-45-1
trimethyltin(IV)chloride

: 1070-75-3
dilithium acetylide

: 74-86-2
acetylene

: 2117-50-2
bis(trimethyltin)acetylene

Conditions

Conditions	Yield
In hexane excess of C2H2;	10%

...Expand

: 994-31-0
chlorotriethylstannane

: 1070-75-3
dilithium acetylide

: 74-86-2
acetylene

A: 994-39-8
triethylethynylstannane

B: 994-99-0
bis(triethylstannyl)ethyne

Conditions

Conditions	Yield
In hexane excess of C2H2;	A 10% B n/a

...Expand

: 358-23-6
trifluoromethylsulfonic anhydride

: 1070-75-3
dilithium acetylide

: 542-92-7
cyclopenta-1,3-diene

: C18H12F6O4S2

Conditions

Conditions	Yield
In diethyl ether at -20℃;	1.3%

...Expand

: 1116-61-6
tripropylborane

: 1070-75-3
dilithium acetylide

: 57984-32-4
4,5-dipropyl-4-octene

Conditions

Conditions	Yield
(i) , (ii) BrCN, NaOMe, (iii) EtCO2H; Multistep reaction;

Lithium acetylide Chemical Properties

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 Uses

Lithium acetylide (CAS NO.1070-75-3) can be used in radiocarbon dating.

Lithium acetylide Production

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

Lithium acetylide Safety Profile

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 Specification

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.

Product Name

dilithium acetylide

Synthetic route

Lithium acetylide Chemical Properties

Lithium acetylide Uses

Lithium acetylide Production

Lithium acetylide Safety Profile

Lithium acetylide Specification

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