A polyyne is any organic compound with alternating single and triple bonds; that is, a series of consecutive alkynes, (−C≡C−)n with n greater than 1. These compounds are also called polyacetylenes, especially in the natural products and chemical ecology literature, even though this nomenclature more properly refers to acetylene polymers composed of alternating single and double bonds (−CR=CR′−)n with n greater than 1. They are also sometimes referred to as oligoynes, or carbinoids after \"carbyne\" (−C≡C−)∞, the hypothetical allotrope of carbon that would be the ultimate member of the series. The synthesis of this substance has been claimed several times since the 1960s, but those reports have been disputed. Indeed, the substances identified as short chains of \"carbyne\" in many early organic synthesis attempts would be called polyynes today.
"}{"fact":"The strongest climber among the big cats, a leopard can carry prey twice its weight up a tree.","length":94}
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{"fact":"After humans, mountain lions have the largest range of any mammal in the Western Hemisphere.","length":92}
{"type":"standard","title":"Hari Shankar Vyas","displaytitle":"Hari Shankar Vyas","namespace":{"id":0,"text":""},"wikibase_item":"Q23304469","titles":{"canonical":"Hari_Shankar_Vyas","normalized":"Hari Shankar Vyas","display":"Hari Shankar Vyas"},"pageid":48872877,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Hari-shankar-vyas.jpg/330px-Hari-shankar-vyas.jpg","width":320,"height":316},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/e/e1/Hari-shankar-vyas.jpg","width":500,"height":493},"lang":"en","dir":"ltr","revision":"1259318749","tid":"77847814-aa70-11ef-97ea-80f794d1e4b9","timestamp":"2024-11-24T14:29:09Z","description":"Indian journalist and newspaper editor","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Hari_Shankar_Vyas","revisions":"https://en.wikipedia.org/wiki/Hari_Shankar_Vyas?action=history","edit":"https://en.wikipedia.org/wiki/Hari_Shankar_Vyas?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Hari_Shankar_Vyas"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Hari_Shankar_Vyas","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Hari_Shankar_Vyas","edit":"https://en.m.wikipedia.org/wiki/Hari_Shankar_Vyas?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Hari_Shankar_Vyas"}},"extract":"Hari Shankar Vyas is an Indian journalist, and the Chief-editor and publisher of Naya India, a daily national Hindi newspaper. He is also the consultant for ETV's Hindi channels since 2009. He started anchoring-producing five-day weekly programme for ETV Network Hindi Channels since Feb 2009. He writes a daily column \"Apen to Kahege\" for Naya India and weekly column Gupshup. which appears every Sunday in different Hindi newspaper. as well as English newspaper, the Sunday Pioneer. \nPrior, he served 13 years as editor, news of the Jansatta. Since the times of Jansatta, he has been writing a Sunday column titled GUPSHUP, both in Hindi and in English. The 35-year-old column has in the past graced the pages of many regional newspapers. His columns bring forward to the readers the ringside view of the contemporary Indian Politics.","extract_html":"
Hari Shankar Vyas is an Indian journalist, and the Chief-editor and publisher of Naya India, a daily national Hindi newspaper. He is also the consultant for ETV's Hindi channels since 2009. He started anchoring-producing five-day weekly programme for ETV Network Hindi Channels since Feb 2009. He writes a daily column \"Apen to Kahege\" for Naya India and weekly column Gupshup. which appears every