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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. A variety of complexes are known with bidentate ligands. [4]
Chemical formula CAS number Melting point Boiling point P–X ax bond length P–X eq bond length X eq –P–X eq bond angle X ax –P–X eq bond angle PF 5 Phosphorus pentafluoride [7647-19-0] -93.7°C -84.5°C 153 pm 158 pm 120° 90° PCl 5 Phosphorus pentachloride [10026-13-8] 160°C 167°C 214 pm 202 pm 120° 90° PBr 5 Phosphorus ...
Phosphorus fluoride may refer to any of the following: Phosphorus trifluoride, PF 3; Phosphorus pentafluoride, PF 5; Diphosphorus tetrafluoride, [1] P 2 F 4; See phosphorus halides for a complete list of phosphorus halides.
The pentafluorides of phosphorus [85] and arsenic [86] are much more reactive than their trifluorides; antimony pentafluoride is such a strong acid that it holds the title of the strongest Lewis acid. [86] Nitrogen is not known to form a pentafluoride, although the tetrafluoroammonium cation (NF +
Hexafluorophosphoric acid refers to a family of salts produced by combining phosphorus pentafluoride and hydrofluoric acid. The idealized chemical formula for hexafluorophosphoric acid is HPF 6, which also is written H[PF] 6. [3] Hexafluorophosphoric acid is only stable in solution, decomposing to HF and PF 5 when dry. [4]
Phosphoryl fluoride (commonly called phosphorus oxyfluoride) is a compound with the chemical formula P O F 3. It is a colorless gas that hydrolyzes rapidly. It has a critical temperature of 73 °C and a critical pressure of 4.25 bars. [1]
For example, in phosphorus pentafluoride (PF 5), 5 resonance structures can be generated each with four covalent bonds and one ionic bond with greater weight in the structures placing ionic character in the axial bonds, thus satisfying the octet rule and explaining both the observed trigonal bipyramidal molecular geometry and the fact that the ...
This decomposes to yet another gas PF 3 •BH 3 and a polymer with formula PF. [6] Diphosphorus tetrafluoride reacts with oxygen or water to yield diphosphorus tetrafluoride oxide, which has one oxygen atom inserted between the two phosphorus atoms: [2] [7] 2 P 2 F 4 + H 2 O → 2 PHF 2 + F 2 POPF 2. The latter compound is a gas with boiling ...