34938-48-2

Basic information

• Product Name: 1H-Imidazole, 2-[(4-methylphenyl)azo]-
• CAS NO: 34938-48-2
• Molecular Formula: C10H10N4
• Molecular Weight: 186.216
• Mol File: 34938-48-2.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 1H-Imidazole, 2-[(4-methylphenyl)azo]-(CAS DataBase Reference)
• NIST Chemistry Reference: 1H-Imidazole, 2-[(4-methylphenyl)azo]-(34938-48-2)
• EPA Substance Registry System: 1H-Imidazole, 2-[(4-methylphenyl)azo]-(34938-48-2)

Safety Data

• Hazardous Substances Data: 34938-48-2(Hazardous Substances Data)

Upstream product

• 288-32-4 1H-imidazole 
• 106-49-0 p-toluidine 
• 2028-84-4 p-methylbenzenediazonium chloride 

Downstream Products

• 7720-39-0 1H-imidazol-2-amine 
• 7664-41-7 ammonia 
• 106-49-0 p-toluidine 
• 113-00-8 guanidine nitrate 
• 959853-88-4 [(η(5)-pentamethylcyclopentadienyl)RhCl(2-(tolylazo)imidazole)]PF6 
• 959854-08-1 [(η(5)-pentamethylcyclopentadienyl)IrCl(2-(tolylazo)imidazole)]PF6 
• 1233972-45-6 Zn(2-(p-tolylazo)imidazole)2(NCS)2 
• 1233972-47-8 Cd(2-(p-tolylazo)imidazole)2Cl₂ 
• 1352391-67-3 (E)-[N⁽¹⁾-hexyl-2-(p-tolylazo)imidazole] 
• 1352391-63-9 N⁽¹⁾-n-butyl-2-(p-tolylazo)imidazole 
• 1352391-71-9 N⁽¹⁾-n-octyl-2-(p-tolylazo)imidazole 
• 1400923-63-8 Cu(triphenylphosphine)(2-(p-tolylazo)imidazole)Cl 
• 1400923-75-2 Cu(triphenylphosphine)(2-(p-tolylazo)imidazole)I 
• 1400923-69-4 Cu(triphenylphosphine)(2-(p-tolylazo)imidazole)Br 

Relevant articles and documents

Influence of the cavity size of cyclodextrins on the photochromism of azoimidazoles

1-Alkyl-2-(arylazo)imidazole (RaaiR/) exists in trans configuration about the –N[dbnd]N- bond. Upon optical excitation in UV region the trans-configuration isomerises to cis-RaaiR/. The photochromism is very susceptible to internal substituents and external environment like solvent polarity, viscosity and presence of innocent foreign species. In this work, the trans-to-cis photoisomerisation of RaaiR/has been studied in DMF solution of cyclodextrin (α/β/γ-CD). The rate of trans-to-cis isomerisation is decreased in presence of CD compared to native form of RaaiR/. The quantum yield of the photoisomerisation is decreased by 35–55% in inclusion phase, CD@RaaiR/, than free photochrome and follows the rate sequence: free state > γ-cyclodextrin > β-cyclodextrin > α-cyclodextrin. The cis-to-trans isomerisation proceeds slowly in visible light irradiation while it is appreciably fast with increasing temperature. The activation energy (Ea) of cis → trans thermal isomerisation is also diminished compared to free state of photochrome. The absorption spectral studies have been used in case of Pai-C18H37 with β-CD and inclusion constant is Kb ?= ?0. 121 M?1. The 1H NMR spectral measurement also suggests interaction of aryl protons with cavity protons of β-CD. DFT computation is also attempted to examine the inclusion of RaaiR/with CD and the negative values of binding energy show that the process of inclusion is spontaneous and complexes formed are stable.

Synthesis and spectral characterization of lead(II), silver(I), palladium(II) and dioxouranium(VI) azoimidazole complexes

A few complexes of Pb(II), Ag(I), Pd(II) and dioxouraniura(VI) with arylazoimidazoles have been synthesized and characterized by elemental analyses, IR, UV/VIS, 1H NMR and conductance studies. The uranyl complexes are found to be monomeric and ionic in nature whereas Pb(II), Ag(I) and Pd(II) complexes are polymeric.