515880-95-2

Basic information

• Product Name: 2-(pentamethyldisilanyl)-5-bromo-1,4-benzoquinone
• Synonyms: 2-(pentamethyldisilanyl)-5-bromo-1,4-benzoquinone
• CAS NO: 515880-95-2
• Molecular Weight: 317.33
• Mol File: 515880-95-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2-(pentamethyldisilanyl)-5-bromo-1,4-benzoquinone(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(pentamethyldisilanyl)-5-bromo-1,4-benzoquinone(515880-95-2)
• EPA Substance Registry System: 2-(pentamethyldisilanyl)-5-bromo-1,4-benzoquinone(515880-95-2)

Safety Data

• Hazardous Substances Data: 515880-95-2(Hazardous Substances Data)

Upstream product

• 131904-59-1 2,5-dibromo-1,4-bis<(pentamethyldisilanyl)oxy>benzene 
• 1560-28-7 pentamethylchlorodisilane 

Relevant articles and documents

Preparation, structure, and photochemistry of 2-disilanyl-1,4-benzoquinones

We synthesized 5-chloro- and 5-bromo-substituted 2-(pentamethyldisilanyl)-1,4-benzoquinones 1a and 1b, respectively. Their electronic absorption spectra showed significant intramolecular charge-transfer interaction between disilane and 1,4-benzoquinone moieties. The intramolecular σ(SiSi)-π* transition energies of 1a and 1b were lower than that of 2-(pentamethyldisilanyl)-5-t-butyl-1,4-benzoquinone (1c). X-ray crystallographic analysis of chloro- substituted derivative 1a revealed that the angle between the Si-Si bond and the quinone ring was 74° and also that the structure of 1a in the solid state was also advantageous for CT interaction. Photoreaction of 1a and 1b gave α-sila-m-quinonemethide derivatives 3a and 3b, respectively, which were trapped by acetone. Matrix isolation of 3a, 3b, and their 2-methyltetrahydrofuran-complexes were accomplished in glass matrixes.