Ferrocenium tetrafluoroborate is an organometallic compound with the formula [Fe(C5H5)2]BF4. This salt is composed of the cation [Fe(C5H5)2]+ and the tetrafluoroborate anion (BF−
4). The related hexafluorophosphate is also a popular reagent with similar properties. The ferrocenium cation is often abbreviated Fc+ or Cp2Fe+. The salt is deep blue in color and paramagnetic.\nFerrocenium salts are sometimes used as one-electron oxidizing agents, and the reduced product, ferrocene, is inert and readily separated from ionic products. The ferrocene–ferrocenium couple is often used as a reference in electrochemistry. The standard potential of ferrocene-ferrocenium is dependent on specific electrochemical conditions.
{"type":"standard","title":"Ulandra Nature Reserve","displaytitle":"Ulandra Nature Reserve","namespace":{"id":0,"text":""},"wikibase_item":"Q7878725","titles":{"canonical":"Ulandra_Nature_Reserve","normalized":"Ulandra Nature Reserve","display":"Ulandra Nature Reserve"},"pageid":13135659,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/d/da/Tower_Road_entrance_into_Ulandra_Nature_Reserve.jpg/330px-Tower_Road_entrance_into_Ulandra_Nature_Reserve.jpg","width":320,"height":213},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/d/da/Tower_Road_entrance_into_Ulandra_Nature_Reserve.jpg","width":2000,"height":1333},"lang":"en","dir":"ltr","revision":"1202406793","tid":"c584693e-c1f5-11ee-9245-41ac020d0242","timestamp":"2024-02-02T18:06:22Z","description":"Protected area in New South Wales, Australia","description_source":"local","coordinates":{"lat":-34.81638889,"lon":147.91861111},"content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Ulandra_Nature_Reserve","revisions":"https://en.wikipedia.org/wiki/Ulandra_Nature_Reserve?action=history","edit":"https://en.wikipedia.org/wiki/Ulandra_Nature_Reserve?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Ulandra_Nature_Reserve"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Ulandra_Nature_Reserve","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Ulandra_Nature_Reserve","edit":"https://en.m.wikipedia.org/wiki/Ulandra_Nature_Reserve?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Ulandra_Nature_Reserve"}},"extract":"The Ulandra Nature Reserve is a protected nature reserve that is located in the west hills of the Southern Tablelands and eastern Riverina regions of New South Wales in eastern Australia. The 3,930-hectare (9,700-acre) reserve is situated approximately 25 kilometres (16 mi) south-west of Cootamundra and 4 kilometres (2.5 mi) south-east of the village of Bethungra.","extract_html":"
The Ulandra Nature Reserve is a protected nature reserve that is located in the west hills of the Southern Tablelands and eastern Riverina regions of New South Wales in eastern Australia. The 3,930-hectare (9,700-acre) reserve is situated approximately 25 kilometres (16 mi) south-west of Cootamundra and 4 kilometres (2.5 mi) south-east of the village of Bethungra.
"}{"slip": { "id": 39, "advice": "Never run a marathon in Crocs."}}
{"type":"standard","title":"First Lutheran Church (St. Ansgar, Iowa)","displaytitle":"First Lutheran Church (St. Ansgar, Iowa)","namespace":{"id":0,"text":""},"wikibase_item":"Q5453238","titles":{"canonical":"First_Lutheran_Church_(St._Ansgar,_Iowa)","normalized":"First Lutheran Church (St. Ansgar, Iowa)","display":"First Lutheran Church (St. Ansgar, Iowa)"},"pageid":38403386,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/First_Lutheran_Church_NRHP_76000795_Mitchell_County%2C_IA.jpg/330px-First_Lutheran_Church_NRHP_76000795_Mitchell_County%2C_IA.jpg","width":320,"height":240},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/5/5d/First_Lutheran_Church_NRHP_76000795_Mitchell_County%2C_IA.jpg","width":1344,"height":1008},"lang":"en","dir":"ltr","revision":"1286933343","tid":"ad9b39cf-1fc9-11f0-affc-eaa55aafdfba","timestamp":"2025-04-22T22:32:31Z","description":"United States historic place","description_source":"local","coordinates":{"lat":43.38,"lon":-92.92555556},"content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/First_Lutheran_Church_(St._Ansgar%2C_Iowa)","revisions":"https://en.wikipedia.org/wiki/First_Lutheran_Church_(St._Ansgar%2C_Iowa)?action=history","edit":"https://en.wikipedia.org/wiki/First_Lutheran_Church_(St._Ansgar%2C_Iowa)?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:First_Lutheran_Church_(St._Ansgar%2C_Iowa)"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/First_Lutheran_Church_(St._Ansgar%2C_Iowa)","revisions":"https://en.m.wikipedia.org/wiki/Special:History/First_Lutheran_Church_(St._Ansgar%2C_Iowa)","edit":"https://en.m.wikipedia.org/wiki/First_Lutheran_Church_(St._Ansgar%2C_Iowa)?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:First_Lutheran_Church_(St._Ansgar%2C_Iowa)"}},"extract":"First Lutheran Church of St. Ansgar is a historic church located at 212 N. Main Street in St. Ansgar, Iowa, United States. It was added to the National Register in 1976.","extract_html":"
First Lutheran Church of St. Ansgar is a historic church located at 212 N. Main Street in St. Ansgar, Iowa, United States. It was added to the National Register in 1976.
"}