We hear of an unusual idea that appeared in the 1970s: that metals can become anions and gain electrons! These are the alkalide compounds, first discovered in 1974. Such compounds are anions of the alkaline metals, often combined with crown ethers. The second, related topic in this episode is that of solvated electrons, where electrons sit in the spaces between molecules. These compounds are the electrides. Finally, we touch on ionic liquids--not water, but liquids that are primarily ionic in nature, at or near room temperature. All of these topics ramped up in research popularity in the 1970s and 1980s.  Become a Patreon supporter, so you may download a supplemental sheet with diagrams of some of the molecules I discuss in this episode.Support the show Support my podcast at https://www.patreon.com/thehistoryofchemistry Tell me how your life relates to chemistry! E-mail me at [email protected] Get my book, O Mg! How Chemistry Came to Be, from World Scientific Publishing, https://www.worldscientific.com/worldscibooks/10.1142/12670#t=aboutBook

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