6181-20-0

Upstream product

• 22702-72-3 1,1,2,2-tetramethyl-1,2-diphenyldigermane 
• 56-23-5 tetrachloromethane 
• 4506-69-8 dodecamethylcyclohexagermane 

Relevant academic research and scientific papers

Photochemical Reactions of Aryl-Substituted Digermanes through a Pair of Organogermyl Radicals

The photochemical reactions of aryl-substituted digermanes were investigated by trapping experiments and a laser flash photolysis technique.The photolysis of phenylated digermanes resulted in germanium-germanium bond homolysis to give a pair of two germyl radicals.The germyl radicals abstracted a chlorine atom from carbon tetrachloride to give chlorogermanes.The pair of germyl radicals also underwent ipso-substitution, which was a precursor of the germylenes.The mechanism for the photochemistry of phenylated digermenes is discussed.

Reactivity, absorption and emission of dimethylgermylene photo-generated from dodecamethylcyclohexagermane

The UV photolysis of dodecamethylcyclohexagermane (1) in cyclohexane at room temperature proceeds readily with loss of dimethylgermylene species to give two of the lower homologs, decamethylcyclopentagermane (2) and octamethylcyclotetragermane (3).The photochemically generated dimethylgermylene species reacts with 2,3-dimethylbuta-1.3-diene or CCl4 to give 1,1,3,4,-tetramethyl-1-germacyclopent-3-ene or trichloromethyldimethylchlorogermane, respectiively.The transient absorption of 1 in cyclohexane at 450 nm obtained by laser flash-photolysis is due to dimethylgermylene.The reaction rates of dimethylgermylene with some substances are examined.In 3-methylpentane glass dimethylgermylene shows an absorption band at 430 nm and a fluorescence peak at 650 nm.The photo-generated germylene appears to be the singlet ground state.

Laser photolysis of aryl-substituted digermanes. Generation of germyl radicals and germylenes

Laser flash photolysis of the phenyl-substituted digermanes (PhnMe3-nGe)2 results in Ge-Ge bond homolysis to give germyl radicals and probably a germylene.