R. Bonnett et al., THE IDENTIFICATION OF DEUTEROETIOHAEM-IX IN COLORADO COAL, Journal of the Chemical Society, Chemical Communications, (20), 1993, pp. 1564-1566
Using paramagnetically-shifted H-1 NMR spectroscopy of the dicyano-iro
n(III) complexes at 600 MHz as the principal tool, the identification
of etiohaem III in Colorado coal is confirmed (1.63 mug g-1), and deut
eroetiohaem IX (0.52 mug g-1) is identified for the first time, by com
parison with samples made by total synthesis.