23487-42-5

Upstream product

• 501-65-5 diphenyl acetylene 
• 195721-65-4 1,1,2,2-tetraethyl-3,4,5,6-tetraphenyl-1-germa-2-silylcyclohexa-3,5-diene 
• 195721-64-3 1,1,2,2-tetraethyl-3,4,5,6-tetraphenyl-1,2-disilacyclohexa-3,5-diene 

Relevant academic research and scientific papers

Photoinduced Electron Transfer from Tetraphenyl-Substituted 1,2-Digermacyclohexa-3,5-dienes and Related Compounds to C60

The irradiation of benzene-benzonitrile solutions of 3,4,5,6-tetraphenyl-substituted l,2-digermacyclohexa-3,5-dienes and related compounds in the presence of C60 afforded the corresponding ring-contracted products, namely 1-germacyclopenta-2,4-dienes, with the extrusion of germylene and ring-expanded oxadigerma compounds, namely l-oxa-2,7digermacyclohepta-3,5-dienes. The laser flash photolysis of a benzene-benzonitrile solution of 1,2-digermacyclohexa-3,5-dienes in the presence of C60 showed that the transient absorption band of the C60 triplet state (TC60*) appeared immediately at 730 nm. With the decay of TC60*, the absorption bands of the radical anion of C60· - appeared at 1060 nm, showing that an electron transfer takes place from 1,2-digermacyclohexa-3,5-dienes to TC60*. The formation of cyclic oxadigerma compounds was explained by processes of both the photooxidation of 1,2-digermacyclohexa-3,5-dienes in the absence of C60 with singlet oxygen and oxidation of the cation radical of 1,2-digermacyclohexa-3,5-dienes with triplet oxygen.