136849-65-5

Basic information

• Product Name: pyridine-2-azo-p-phenyltetramethylguanidine
• CAS NO: 136849-65-5
• Molecular Weight: 296.375
• Mol File: 136849-65-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: pyridine-2-azo-p-phenyltetramethylguanidine(CAS DataBase Reference)
• NIST Chemistry Reference: pyridine-2-azo-p-phenyltetramethylguanidine(136849-65-5)
• EPA Substance Registry System: pyridine-2-azo-p-phenyltetramethylguanidine(136849-65-5)

Safety Data

• Hazardous Substances Data: 136849-65-5(Hazardous Substances Data)

Upstream product

• 504-29-0 2-aminopyridine 
• 17951-14-3 2-(4'-nitrophenyl)-1,1,3,3-tetramethylguanidine 

Downstream Products

• 153051-38-8 C₅H₄N(N₂)C₆H₄NHC(N(CH₃)2)2⁽¹⁺⁾*AuCl₄^(1-)={C₅H₄N(N₂)C₆H₄NHC(N(CH₃)2)2}{AuCl₄} 
• 153051-40-2 C₅H₄N(N₂)C₆H₄NLiC(N(CH₃)2)2⁽¹⁺⁾*AuCl₄^(1-)={C₅H₄N(N₂)C₆H₄NLiC(N(CH₃)2)2}{AuCl₄} 

Relevant articles and documents

Study of the properties of pyridine-2-azo-p-phenyltetramethylguanidine as a metal ion complexing agent

Pyridine-2-azo-p-phenyltetramethylguanidine (PAPT) was synthesized and the properties of this compound examined.The dissociation contants of the conjugate acids in H2O are pK'a H20 = 10.41 +/- 0.06, and pK"a H2O = 2.62 +/- 0.02 at 25 deg C at I = 0.1, and in acetonitrile are pK'a = 18.0 +/- 0.2 and pK"a = 10.4 +/- 0.2.The properties of metal-ligand chelates in acetonitrile have been examined and the stability constants for Ni2+, Co2+, and Zn2+ complexes measured.The rates of reaction of PAPT with Ni2+, Co2+, and Zn2+ in acetonitrile have been determined and the activation parameters measured for the complex formation of LNi2+.The stability constants for both complexing centres of PAPT have been calculated.The 13C NMR spectra for PAPT and LNi2+ are quoted.The expected enhancement of the metal ion complexing ability of PAPT due to the strongly electron-releasing nature of the tetramethylguanidinyl group was not found. Key words: metal ion complexes, pyridine-2-azo-p-phenyltetramethylguanidine, stability constants, pKa.