The microwave spectrum, structure, and dipole moment of nitryl fluoride

Abstract

The microwave spectra of the following isotopic species of nitryl fluoride have been investigated and assigned: ¹⁴N¹⁶O₂F,¹⁴N¹⁸O¹⁶OF, and ¹⁵N¹⁶O₂F. Rotational constants from the three species have been used to determine the structure in several ways. The following structure is reported: ∠ ONO = 136°± 1·5°, r_N–O= 1·1798 ± 0·0035 Å, r_N–P= 1·467 ± 0·015 Å, and r_O–O= 2·1878 ± 0·003 Å.

The Stark effect of the 1₀₁â†� 0₀₀ transition of the ¹⁵N species has been studied and yields a dipole moment of 0·466 ± 0·005 D.

A new method of preparing nitryl fluoride, which proved particularly convenient for the preparation of isotopically enriched species, has been developed.