Tris(3,6-dioxaheptyl)amine alkali-metal cation complexes. A fast atom bombardment mass spectrometry, infrared, and nuclear magnetic resonance study

Abstract

Tris(3,6-dioxaheptyl)amine (tdoha, industrial name TDA-1) is shown to complex with a series of alkali-metal cations in solution, complexation being observed by fast atom bombardment mass spectrometry (f.a.b.m.s.; observation of a metal–tdoha cation), i.r., and ¹⁹F n.m.r. Approximate values of the relative concentrations of the tdoha and crown ether complexes are obtained by f.a.b.m.s. by competitive complexation experiments with a range of cations.