Microwave spectrum and structure of nitrosyl fluoride

Abstract

The microwave spectra of the isotopic species ¹⁶O¹⁴NF, ¹⁸O¹⁴NF, and ¹⁶O¹⁵NF have been assigned and analyzed to give rotational constants. The constants allow the structure to be severally determined. The following structure is reported : r_N–F= 1.512 ± 0.005 Å, r_N–O= 1.136 ± 0.003 Å, and < ONF = 110°5′± 10′. Analysis of fine structure of ¹⁶O¹⁴NF transitions gives the ¹⁴N-nuclear quadrupole coupling constants as χ_aa= 1.69 ± 0.05, χ_bb=–4.83 ± 0.05, χ_cc= 3.14 ± 0.05 MHz. A new and convenient preparation of nitrosyl fluoride is also reported.