Synthesis of acetylene bridged germanium phthalocyanines.

The octaalkyl- or octaalkoxysubstituted phthalocyaninatogermanium dichlorides 10b,d,e and 10a-c were reacted with bisbromomagnesiumacetylene 16 and bisbromomagnesium-p-diethynylbenzene 18, respectively with formation of the corresponding acetylene bridged oligomers 17a-c and 19a-c, respectively.