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Properties of substance:

monolithium acetylide - ethylenediamine (1/1)

Group of substances:

elementorganic

Physical appearance:

white crystals

Empirical formula (Hill's system for organic substances):

C4H9LiN2

Structural formula as text:

HC≡CLi * H2NCH2CH2NH2

Decomposition temperature (°C):

45

Solubility (g/100 g of solvent):

1,4-dioxane: 0.6 (25°C) [Ref.]
1,4-dioxane: 1.6 (40°C) [Ref.]
1-propylamine: 17 (25°C) [Ref.]
1-propylamine: 19.5 (40°C) [Ref.]
benzene: 0.08 (25°C) [Ref.]
benzene: 0.2 (40°C) [Ref.]
dibutylamine: 0.03 (25°C) [Ref.]
dibutylamine: 0.03 (40°C) [Ref.]
diethyl ether: 0.05 (25°C) [Ref.]
dimethylacetamide: reaction [Ref.]
dimethylformamide: reaction [Ref.]
dimethylsulfoxide: 50 (25°C) [Ref.]
dimethylsulfoxide: 49 (40°C) [Ref.]
ethylenediamine: 130 (25°C) [Ref.]
ethylenediamine: 32 (40°C) [Ref.]
heptane: insoluble (25°C) [Ref.]
hexane: insoluble (25°C) [Ref.]
n-butylamine: 12.1 (25°C) [Ref.]
n-butylamine: 14.3 (40°C) [Ref.]
pyridine: 5.4 (25°C) [Ref.]
pyridine: 9.2 (40°C) [Ref.]
tetrahydrofuran: 0.4 (25°C) [Ref.]
tetrahydrofuran: 0.4 (40°C) [Ref.]
toluene: 0.02 (25°C) [Ref.]
toluene: 0.06 (40°C) [Ref.]
tributylamine: 0.6 (25°C) [Ref.]
tributylamine: 0.4 (40°C) [Ref.]
xylene: 0.04 (25°C) [Ref.]
xylene: 0.04 (40°C) [Ref.]

Reactions:

  1. Above 45 C monolithium acetylide - ethylenediamine decomposes slowly to dilithium acetylide, acetylene, and ethylenediamine. [Ref.1]
    2HC≡CLi * H2NCH2CH2NH2 → Li2C2 + C2H2 + 2H2NCH2CH2NH2

References:

  1. Journal of Organic Chemistry. - 1963. - Vol. 28, No. 10. - pp. 2775-2779 [DOI: 10.1021/jo01045a069]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru