A Cationic, Macrocyclic, Six-Coordinate Phosphorus(V) Compound Containing a Mixed Valence P^III -P^V -P^III Linear Chain

Area of Science:

• Organophosphorus Chemistry
• Inorganic Chemistry

Background:

• The study investigates the structural and bonding characteristics of novel phosphorus compounds.
• Understanding P-P bonding is crucial in organophosphorus chemistry.

Purpose of the Study:

• To synthesize and characterize a new phosphorus-containing cation, [P{P(o-C6 H4 O)2 Ph}2 ]+.
• To analyze the P-P bond lengths within this novel structure.

Main Methods:

• Synthesis of compound 1 via the reaction of phosphorus pentachloride (PCl5) with [(o-OSiMe3 )C6 H4 ]2 PPh.
• Crystallographic analysis to determine bond lengths and molecular geometry.

Main Results:

• Compound 1 was successfully synthesized and characterized.
• The P^V-P^III bonds in the cation of compound 1 were found to be relatively short (2.2023(10) Å).

Conclusions:

• The synthesized compound exhibits unique bonding features with notably short P-P bonds.
• This finding contributes to the knowledge of bonding in highly symmetrical phosphorus environments.