868139-71-3

Basic information

• Product Name: (tetraphenylporphyrin)Fe(II)(4-methylimidazole)2
• Synonyms: (tetraphenylporphyrin)Fe(II)(4-methylimidazole)2
• CAS NO: 868139-71-3
• Molecular Weight: 832.79
• Mol File: 868139-71-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (tetraphenylporphyrin)Fe(II)(4-methylimidazole)2(CAS DataBase Reference)
• NIST Chemistry Reference: (tetraphenylporphyrin)Fe(II)(4-methylimidazole)2(868139-71-3)
• EPA Substance Registry System: (tetraphenylporphyrin)Fe(II)(4-methylimidazole)2(868139-71-3)

Safety Data

• Hazardous Substances Data: 868139-71-3(Hazardous Substances Data)

Upstream product

• 80925-69-5 (tetraphenylporphyrin)Fe(III)(4-methylimidazole)(4-methylimidazolato) 
• 123-31-9 hydroquinone 
• 7031-93-8 2,2,6,6-tetramethylpiperidin-1-ol 
• 1008132-26-0 [(tetraphenylporphyrin)Fe(III)(4-methylimidazole)2]PF₆ 
• 822-36-6 4-methyl-1H-imidazole 
• 16591-56-3 5,10,15,20-tetraphenyl porphyrin iron 

Downstream Products

• 80925-69-5 (tetraphenylporphyrin)Fe(III)(4-methylimidazole)(4-methylimidazolato) 
• 1008132-28-2 (tetraphenylporphyrin)Fe(II)(4-methylimidazole)(4-methylimidazolato)^(1-) 

Relevant articles and documents

Hydrogen atom transfer reactions of iron-porphyrin-imidazole complexes as models for histidine-ligated heme reactivity

Hydrogen atom transfer (HAT) reactions of the bis(histidine) cytochrome active site models (TPP)FeII(ImH)2 (FeIIImH) and (TPP)Fe(Im)(ImH) (FeIIIIm) have been examined in acetonitrile solvent (TPP = tetraphenylporphyrin, ImH = 4-methylimidazole). The ascorbate derivative 5,6-isopropylidine ascorbate, hydroquinone, and the hydroxylamine TEMPOH all rapidly add H? to FeIIIIm to give FeIIImH. Similarly, the phenoxyl radical 2,4,6-tBu3C6H2O? and excess TEMPO? each oxidize FeIIImH to give FeIIIIm. On the basis of redox potential, pKa, and equilibrium measurements, the N-H bond in FeIIImH was found to have a bond dissociation free energy (BDFE) of 70 ± 2 kcal mol-1. A hydrogen atom transfer mechanism (concerted transfer of e- and H+) is indicated based on data for the ascorbate and TEMPO? reactions. Copyright