Magnetic double resonance studies of silylaminodifluorophosphine and some related amines

Abstract

Homonuclear and heteronuclear double resonance techniques have been used to determine the relative signs of coupling constants involving ¹H, ¹⁶N, ¹⁹F, ²⁹Si, and ³¹P in ¹⁶N-enriched aminodifluorophosphine. Silylaminodifluorophosphine, disilylamine, and trisilylamine. The magnitudes of coupling constants not observable in ¹H or ¹⁹F spectra, and ¹⁵N, ²⁹Si, and ³¹P chemical shifts, have also been determined in these experiments. Assuming ¹K(NH) and ¹K(SiH) to be positive, and ¹K(PF) to be negative, the absolute signs of the coupling constants have been deduced.