779976-14-6

Basic information

• Product Name: durosemiquinone anion radical
• Synonyms: durosemiquinone anion radical
• CAS NO: 779976-14-6
• Molecular Weight: 164.204
• Mol File: 779976-14-6.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: durosemiquinone anion radical(CAS DataBase Reference)
• NIST Chemistry Reference: durosemiquinone anion radical(779976-14-6)
• EPA Substance Registry System: durosemiquinone anion radical(779976-14-6)

Safety Data

• Hazardous Substances Data: 779976-14-6(Hazardous Substances Data)

Upstream product

• 527-17-3 Duroquinone 
• 121-44-8 triethylamine 
• 582-16-1 2,7-dimethylnaphthalene 
• 31366-25-3 tetrathiafulvalene 

Downstream Products

• 527-17-3 Duroquinone 
• 75877-78-0 (4-chlorophenyl)diazenyl radical 
• 70128-24-4 C₁₀H₁₂O₂^(2-) 

Relevant articles and documents

EOSIN Y SENSITIZED REDUCTION OF QUINONES TO THEIR PERSISTENT RADICAL ANIONS

Eosin Y sensitized efficiently the reduction of duroquinone and anthraquinone-2-sulfonate to their persistent radical anions in aqueous 2-propanol in the presence of triethanolamine.

Structure and function of quinones in biological solar energy transduction: A high-frequency d-band EPR spectroscopy study of model benzoquinones

Quinones are utilized as charge-transfer cofactors in a wide variety of reactions that are crucial for photosynthesis and respiration. In photosynthetic protein complexes, both Type I and Type II, including oxygenic and anoxygenic reaction centers contain quinone cofactors that are known to participate in electron- and proton-transfer processes. Type II reaction centers, purple bacterial reaction centers, and photosystem II utilize benzoquinone molecules, ubiquinone, and plastoquinone, respectively, to facilitate proton-coupled electron transfer reactions. Here, we report a systematic study of the principal components of the g-tensor of an extensive library of model benzosemiquinone anion radicals in both protic (2-isopropanol) and aprotic (dimethyl sulfoxide) solvents using high-frequency EPR spectroscopy. A detailed comparison of the experimental g-values of the benzosemiquinone models at D-band EPR frequency allows for the discrimination of substituent effects and solvent hydrogen bonds on the principal components of the g-tensor. Further, we compare the primary plastosemiquinone, QA-, of photosystem II with the substituent and solvent hydrogen bond effects of benzosemiquinone models in vitro. This study significantly extends the experimental basis for elucidating the role of both molecular structure and interactions with environment on the functional tuning of quinone cofactors in biological solar energy transduction.

Wide-Band, Time-Resolved Photoacoustic Study of Electron-Transfer Reactions: Photoexcited Magnesium Porphyrin and Quinones

Wide-band, time-resolved, pulsed photoacoustics has been employed to study the electron-transfer reaction between a triplet magnesium porphyrin and various quinones in polar and nonpolar solvents.The reaction rate constants are near encounter limited.The yield of triplet state is 70percent in both solvents.The yield of ions is 85percent in the former and zero in the latter, in agreement with spin dephasing time and escape times from the Coulomb wells in the two solvents.In methanol the plot of measured heat output versus quinone redox potential is linear.This implies that the entropy of electron transfer is constant through the series, but it may not be negligible.