Conclusions

1. The oxidation of lithium phthalocyanine with chloranil, bromanil, tetracyanoquinodimethane, dichlorodicyano-p-benzoquinone, and halogens leads to the formation of the stable lithium phthalocyanine radical. The latter is readily reduced to PcH2 by mineral acids and hydroquinone. The partial oxidation of PcLi. leads to a charge-transfer complex having increased electrical conductivity.
2. On the basis of magnetic susceptibility data it was suggested that PcLi. has antiferromagnetic characteristics.