The crude product of this trial was likewise characterized via 1 H NMR spectrometry (Figure ). The integration of a prominent pair of peaks in the 8.0-10.0 ppm range with <1.0 ppm peak separation at 9.02 ppm and 8.36 ppm indicates the presence of a ~56% to ~44% ratio of monomeric to dimeric silicon phthalocyanine. This is reinforced by the presence of two distinct pairs of signals corresponding to the triethylgermoxy axial groups in the -1.0 to -3.0 ppm region, indicating the presence of significant quantities of both monomeric and dimeric species.