{"type":"standard","title":"Diphosphagermylene","displaytitle":"Diphosphagermylene","namespace":{"id":0,"text":""},"wikibase_item":"Q48999639","titles":{"canonical":"Diphosphagermylene","normalized":"Diphosphagermylene","display":"Diphosphagermylene"},"pageid":56024584,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/9/90/Diphosphagermylene.png/330px-Diphosphagermylene.png","width":320,"height":157},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/9/90/Diphosphagermylene.png","width":650,"height":318},"lang":"en","dir":"ltr","revision":"1223673994","tid":"235710fa-1148-11ef-8993-7794d117b138","timestamp":"2024-05-13T16:45:00Z","description":"Class of compounds","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Diphosphagermylene","revisions":"https://en.wikipedia.org/wiki/Diphosphagermylene?action=history","edit":"https://en.wikipedia.org/wiki/Diphosphagermylene?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Diphosphagermylene"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Diphosphagermylene","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Diphosphagermylene","edit":"https://en.m.wikipedia.org/wiki/Diphosphagermylene?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Diphosphagermylene"}},"extract":"Diphosphagermylenes are a class of compounds containing a divalent germanium atom bound to two phosphorus atoms. While these compounds resemble diamidocarbenes, such as N-heterocyclic carbenes (NHC), diphosphagermylenes display bonding characteristics distinct from those of diamidocarbenes. In contrast to NHC compounds, in which there is effective N-C p(π)-p(π) overlap between the lone pairs of planar nitrogens and an empty p-orbital of a carbene, systems containing P-Ge p(π)-p(π) overlap are rare. Until 2014, the geometry of phosphorus atoms in all previously reported diphosphatetrylenes are pyramidal, with minimal P-Ge p(π)-p(π) interaction. It has been suggested that the lack of p(π)-p(π) in Ge-P bonds is due to the high energetic barrier associated with achieving a planar configuration at phosphorus, which would allow for efficient p(π)-p(π) overlap between the phosphorus lone pair and the empty P orbital of Ge. The resulting lack of π stabilization contributes to the difficulty associated with isolating diphosphagermylene and the Ge-P double bonds. However, utilization of sterically encumbering phosphorus centers has allowed for the isolation of diphosphagermylenes with a planar phosphorus center with a significant P-Ge p(π)-p(π) interaction.","extract_html":"
Diphosphagermylenes are a class of compounds containing a divalent germanium atom bound to two phosphorus atoms. While these compounds resemble diamidocarbenes, such as N-heterocyclic carbenes (NHC), diphosphagermylenes display bonding characteristics distinct from those of diamidocarbenes. In contrast to NHC compounds, in which there is effective N-C p(π)-p(π) overlap between the lone pairs of planar nitrogens and an empty p-orbital of a carbene, systems containing P-Ge p(π)-p(π) overlap are rare. Until 2014, the geometry of phosphorus atoms in all previously reported diphosphatetrylenes are pyramidal, with minimal P-Ge p(π)-p(π) interaction. It has been suggested that the lack of p(π)-p(π) in Ge-P bonds is due to the high energetic barrier associated with achieving a planar configuration at phosphorus, which would allow for efficient p(π)-p(π) overlap between the phosphorus lone pair and the empty P orbital of Ge. The resulting lack of π stabilization contributes to the difficulty associated with isolating diphosphagermylene and the Ge-P double bonds. However, utilization of sterically encumbering phosphorus centers has allowed for the isolation of diphosphagermylenes with a planar phosphorus center with a significant P-Ge p(π)-p(π) interaction.
"}{"fact":"A cat uses its whiskers for measuring distances. The whiskers of a cat are capable of registering very small changes in air pressure.","length":134}
{"fact":"Cats that live together sometimes rub each others heads to show that they have no intention of fighting. Young cats do this more often, especially when they are excited.","length":169}
{"type":"standard","title":"Plectrophenax","displaytitle":"Plectrophenax","namespace":{"id":0,"text":""},"wikibase_item":"Q1073197","titles":{"canonical":"Plectrophenax","normalized":"Plectrophenax","display":"Plectrophenax"},"pageid":7898084,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/5/57/Snow_Bunting_Cairngorm.jpg","width":319,"height":283},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/5/57/Snow_Bunting_Cairngorm.jpg","width":319,"height":283},"lang":"en","dir":"ltr","revision":"1225662887","tid":"4985921d-1ae8-11ef-a1b0-993f13eed957","timestamp":"2024-05-25T22:44:04Z","description":"Genus of birds","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Plectrophenax","revisions":"https://en.wikipedia.org/wiki/Plectrophenax?action=history","edit":"https://en.wikipedia.org/wiki/Plectrophenax?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Plectrophenax"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Plectrophenax","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Plectrophenax","edit":"https://en.m.wikipedia.org/wiki/Plectrophenax?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Plectrophenax"}},"extract":"Plectrophenax is a small genus of passerine birds of the longspur family Calcariidae.","extract_html":"
Plectrophenax is a small genus of passerine birds of the longspur family Calcariidae.
"}