Summary
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1.
In the reaction of organolithium compounds with acetylene and other 1-alkynes in hexane, benzene, and ether, crystalline 1-alkynyllithiums are formed.
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2.
Ethynyllithium is stable for storage, probably as a result of the formation of stable complexes between its molecules.
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3.
Ethynyllithium is able to form crystalline ternary complexes with lithium bromide and ether.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 1607–1613, September, 1965