熱點文獻
Science
[Report] Synthesis and characterization of P2N3?: An aromatic ion composed of phosphorus and nitrogen
Alexandra Velian, Christopher C. Cummins.
Aromaticity is predominantly associated with carbon-rich compounds but can also occur in all-inorganic ones. We report the synthesis of the diphosphatriazolate anion, a rare example of a planar aromatic inorganic species. Treatment of azide (N3?) in tetrahydrofuran solution with P2A2 (A = C14H10), a source of P2, produced P2N3?, which we isolated as its [Na-kryptofix-221]+ salt in 22% yield and characterized by single-crystal x-ray diffraction. Salts [Na-kryptofix-221] [P2N3] and [Na-kryptofix-221] [P215NN2] were analyzed by infrared and Raman spectroscopy, 15N and 31P nuclear magnetic resonance spectroscopy, and mass spectrometry. The formation of the P2N3? anion was investigated using density functional theory, and its aromatic character was confirmed by NICS (nucleus-independent chemical shift) and QTAIM (quantum theory of atoms in molecules) methods.