Use of selective 1H relaxation in a 13C nuclear magnetic resonance study of (trans-cyclohexane-1,2-diamine-NNN′N′-tetra-acetato)hydroxothallium(I)

Abstract

A ¹³C n.m.r. study at 270 K indicates the formation of [Tl^I(cdta)OH]^4–, cdta =(cyclohexane-1,2-diamine-NNN′N′-tetra-acetate)^4– from [Tl^I(cdta)]^3– at high pH, and the addition of small amounts of paramagnetic [Mn^II(cdta)]^2– aids in the assignment of an axial structure by selectively broadening the two axial of the four observed resonances from the acetate CH₂ groups.