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Phosphorus trifluoride (formula P F 3), is a colorless and odorless gas.It is highly toxic and reacts slowly with water. Its main use is as a ligand in metal complexes.As a ligand, it parallels carbon monoxide in metal carbonyls, [1] and indeed its toxicity is due to its binding with the iron in blood hemoglobin in a similar way to carbon monoxide.
The Pittsburgh Post-Gazette, also known simply as the PG, is the largest newspaper serving metropolitan Pittsburgh in the U.S. state of Pennsylvania.Descended from the Pittsburgh Gazette, established in 1786 as the first newspaper published west of the Allegheny Mountains, the paper formed under its present title in 1927 from the consolidation of the Pittsburgh Gazette Times and The Pittsburgh ...
In early work, phosphine ligands were thought to utilize 3d orbitals to form M-P pi-bonding, but it is now accepted that d-orbitals on phosphorus are not involved in bonding. [9] The energy of the σ* orbitals is lower for phosphines with electronegative substituents , and for this reason phosphorus trifluoride is a particularly good π-acceptor.
PGE Boiler #16 in 1988. The utility was founded in 1888 by Parker F. Morey and Edward L. Eastham as Willamette Falls Electric Company. On June 3, 1889, it sent power generated by one of four brush arc light dynamos at Willamette Falls over a 14-mile (23 km) electric power transmission line to Portland, the first US power plant to do so.
Pittsburgh is home to the first commercial radio station in the United States, KDKA 1020AM, the first community-sponsored television station in the United States, WQED 13, the first "networked" television station and the first station in the country to broadcast 24 hours a day, 7 days a week, KDKA 2, and the first newspaper published west of the Allegheny Mountains, the Pittsburgh Post-Gazette.
The first car to use the PF3 platform was the 2001 Citroën C5. PSA PF3 was a global mid-size platform used by various models produced by Citroën and Peugeot . PSA began to use the new EMP2 platform (instead of the PF3 platform) for all future models in 2013, starting with the new Peugeot 308 , except for collaborations with its partner ...
Country/region Name (native) Name (translation) Notes Website Afghanistan رسمي جرېده (Pashto) جريدۀ رسمی (Dari) : Official Gazette: Gazette has two official native languages.
Phosphorus pentafluoride is a Lewis acid.This property is relevant to its ready hydrolysis. A well studied adduct is PF 5 with pyridine.With primary and secondary amines, the adducts convert readily to dimeric amido-bridged derivatives with the formula [PF 4 (NR 2)] 2.