76874-24-3

Basic information

• Product Name: N,N,N',N'-tetraphenylbenzidine
• Synonyms: N,N,N',N'-tetraphenylbenzidine
• CAS NO: 76874-24-3
• Molecular Weight: 488.632
• Mol File: 76874-24-3.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: N,N,N',N'-tetraphenylbenzidine(CAS DataBase Reference)
• NIST Chemistry Reference: N,N,N',N'-tetraphenylbenzidine(76874-24-3)
• EPA Substance Registry System: N,N,N',N'-tetraphenylbenzidine(76874-24-3)

Safety Data

• Hazardous Substances Data: 76874-24-3(Hazardous Substances Data)

Upstream product

• 603-34-9 N,N-diphenylaminobenzene 
• 603-34-9 2,4,6-tri-tert-butylanilino radical 
• 15546-43-7 N,N,N',N'-tetraphenyl-4,4'-diaminobiphenyl 

Relevant articles and documents

Identification of Fleeting Electrochemical Reaction Intermediates Using Desorption Electrospray Ionization Mass Spectrometry

We report a new method for the mass spectrometric detection of fleeting reaction intermediates in electrochemical reactions utilizing a "waterwheel" working electrode setup. This setup takes inspiration from desorption electrospray ionization (DESI) mass spectrometry, where the sampling time is on the order of milliseconds, to sample directly from the surface of a working electrode for mass spectrometric analysis. We present data that show the formation of a diimine intermediate of the electrochemical oxidation of uric acid that has a lifetime in solution of 23 ms as well as data that provide evidence for the formation of a similar diimine species from the electrooxidation of xanthine, which has not been previously observed.

Oxidation von Triphenylamin in Acetonitril an rotierenden Scheibenelektroden

The standard potential for the oxidation of triphenylamine to the radical cation in acetonitrile containing 0.1 M lithium perchlorate is U0/= 601 mV vs. the silver electrode in 0.1 M silver nitrate, the standard rate constant ks= 3.1*10-2 cm s-1, and the transfer coefficient α=0.58.The radical cation dimerizes at a rate constant k2 =2.2(+/-0.2)*103M-1s-1 yielding the N,N,N',N',-tetraphenylbenzidinium dication.The dimerization is followed by a rapid deprotonization and a rapid homogeneous oxidation of the benzidine by the triphenylamine radical cationyielding the semiquinoneimine and the quinonediimine at the ratio 2:3.The rate constant for the synproportionation of the quinonediimine and the benzidine yielding the semiquinoneimine was determined at k2 =4.1*106M-1s-1.The semiquinoneimine reacts with 2,6-lutidine in a reaction with rate constant k2 =137 M-1s-1 and with other bases.The kinetic data result from electrochemical and spectrophotometric measurements at the rotating disc electrode with optically transparent ring and at the rotating ring-disc electrode.Spectra of the extinction coefficients were determined for stable and transient reaction products. - Keywords: Organic electrochemistry / Reaction kinetics / Rotating disc / Spectrophotochemistry