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Home > Encyclopedia > Lithium acetylide-ethylenediamine complex

Lithium acetylide-ethylenediamine complex

Lithium acetylide-ethylenediamine complex structure

Lithium acetylide-ethylenediamine complex 

structure
  • CAS No:

    6867-30-7

  • Formula:

    C4H9LiN2

  • Chemical Name:

    Lithium acetylide-ethylenediamine complex

  • Synonyms:

    Lithium,(1,2-ethanediamine-κN1,κN2)ethynyl-;Ethylenediamine,compd. with lithium acetylide (Li(HC2)) (1:1);Lithium,(1,2-ethanediamine-N,N′)ethynyl-;Lithium,(1,2-ethanediamine-κN,κN′)ethynyl-;Lithium acetylide (Li(HC2)),compd. with ethylenediamine (1:1);(1,2-Ethanediamine-κN1,κN2)ethynyllithium;Ethynyllithium complex with 1,2-ethanediamine (1:1);(1,2-Ethanediamine-N,N′)ethynyllithium;Ethylenediamine compd. with Li acetylide;Lithium acetylide-ethylenediamine (1:1);(Acetylido)(ethylenediamine)lithium;(1,2-Diaminoethane)(ethynyl)lithium;Lithium acetylide-ethylenediamine complex;Ethynyl lithium-ethylene diamine complex;50475-76-8;183200-84-2;879635-77-5;915126-09-9;1040443-42-2;1202864-96-7;1216963-74-4;1262769-73-2;1377876-14-6;1435934-10-3;1694664-78-2;2106794-65-2

  • Categories:

    Organic Chemistry  >  Organometallic Compounds

Description

Lithium Acetylide Ethylenediamine Complex is a slightly yellow to light brown crystals, Lithium acetylide is an unstable solid which disproportionates to form lithium carbide (dilithium acetylide) and acetylene. It is soluble in liquid ammonia at its boiling point to the extent of just over one mole per liter. It is not sensitive to shock and presents a hazard due only to possible caustic burns and the hazards presented by ammonia and acetylene, which form when the material contacts the air.

Lithium acetylide-ethylenediamine complex Basic Attributes

92.07

92.092575

3593824

229-967-9

38249095

Characteristics

52

0.43080

Slightly yellow to light brownor Crystals or Crystalline Powder

1,04 g/cm3

76 °C (dec.)

110.6 °C(lit.)

7 °F

soluble in ethylene diamine, n-propyl amine, n-butyl amine, pyridine, dimethyl formamaide, diglyme, dioxan and dimethylsulfoxide.

2-8°C

Safety Information

III

4.3

UN 3399 4.3/PG 1

3

15-34-67-65-63-48/20-11-35-14/15-20/21/22-14

26-43-45-62-36/37/39-43B-16-6A-7/8-3/7/9

F,C

P210-P223-P231 + P232-P261-P370 + P378-P422

H225-H260-H304-H314-H336-H361d-H373

|Danger|H260 (38.57%): In contact with water releases flammable gases which may ignite spontaneously [Danger Substances and mixtures which in contact with water, emit flammable gases]|P223, P231+P232, P260, P264, P270, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P335+P334, P363, P370+P378, P402+P404, P405, and P501|Aggregated GHS information provided by 70 companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Lithium acetylide-ethylenediamine complex Use and Manufacturing

Uses

The largest industrial use of lithium acetylide is in the production of vitamin A. It is used to ethynylate methyl vinyl ketone to produce a tertiary carbinol, an intermediate in the multistep synthesis.
A second industrial use is in the production of Placidyl®, a tranquilizer . In this case it is used to ethynylate methyl beta-chloro vinyl ketone. Lithium acetylide is used extensively in the laboratory, mostly for the ethynylation of ketones.
Lithium acetylide is not an article of commerce since it is unstable and cannot be shipped.

1,2-Ethanediamine, compd. with lithium acetylide (Li(C2H)) (1:?): ACTIVE

Computed Properties

Molecular Weight:92.1
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:3
Rotatable Bond Count:1
Exact Mass:92.09257673
Monoisotopic Mass:92.09257673
Topological Polar Surface Area:52
Heavy Atom Count:7
Complexity:16.8
Covalently-Bonded Unit Count:3
Compound Is Canonicalized:Yes

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