72282-44-1

Basic information

• Product Name: cobalt(II) meso-5,10,15,20-(tetraphenyl-4-sulfonato)porphyrinato
• Synonyms: cobalt(II) meso-5,10,15,20-(tetraphenyl-4-sulfonato)porphyrinato
• CAS NO: 72282-44-1
• Molecular Weight: 991.983
• Mol File: 72282-44-1.mol

Chemical Properties

• CAS DataBase Reference: cobalt(II) meso-5,10,15,20-(tetraphenyl-4-sulfonato)porphyrinato(CAS DataBase Reference)
• NIST Chemistry Reference: cobalt(II) meso-5,10,15,20-(tetraphenyl-4-sulfonato)porphyrinato(72282-44-1)
• EPA Substance Registry System: cobalt(II) meso-5,10,15,20-(tetraphenyl-4-sulfonato)porphyrinato(72282-44-1)

Safety Data

• Hazardous Substances Data: 72282-44-1(Hazardous Substances Data)

Upstream product

• 6147-53-1 cobalt(II) diacetate tetrahydrate 
• 35218-75-8 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin 

Downstream Products

• 85028-61-1 {Co(NC₄H₂C(C₆H₄SO₃H))4CH(CH₃)2} 
• 85028-60-0 {Co(NC₄H₂C(C₆H₄SO₃H))4CH₃} 
• 85028-59-7 cobalt(I) tetrakis(4-sulfonatophenyl)porphyrin 

Relevant articles and documents

Electrochemical hydrogen evolution by cobalt (II) porphyrins: Effects of ligand modification on catalytic activity, efficiency and overpotential

Electrochemical H2 evolution of a series of cobalt(II) porphyrins with electron-withdrawing (EW) and electron-donating (ED) substituents at the para positions of the meso-phenyl rings has been investigated in DMSO using acetic acid as a proton source. Our study showed that the nature of substituents significantly influences catalytic activity, efficiency, and the potential at which catalysis occurs. Faradaic efficiencies (FE) ranging from 44 to 99%, turnover numbers (TONs) from 1.5 to 104 (～11 h electrolysis), turnover frequencies (TOFs) from 0.23 to 9.1 h?1, and onset overpotentials from 25 to 445 mV were obtained by tuning the porphyrinic substituents. Cobalt porphyrins with -SO3H, -COOH, or -NH2 groups as the substituents showed high activity and efficiency with more positive onset potentials as compared to the parent [Co(TPP)]. Supports also from the low hydrogen generation activities for complexes with -COOMe, -OMe and -OH groups as the substituents suggest that the acidity of the meso-phenyl substituent plays a key role in enhancing the hydrogen evolution activities during the catalytic processes.

Photoinduced Homolysis of Alkyl-Cobalt(III) Bonds in a Cyclodextrin Cage

Photodecomposition of methyl- and ethyl-CoIII complexes of meso-tetrakis(4-sulfonatophenyl)porphyrin (CH3- and C2H5-CoIIITPPSs) was used as a reaction probe to study the cage effect of cyclodextrin capsules formed by two per-O-methylated β-cyclodextrin (TMe-β-CD) molecules and their covalently linked dimer, Ph2CD. The photodecomposition of CH3-CoIIITPPS under aerobic conditions was markedly suppressed in the presence of TMe-β-CD and Ph2CD, while C2H5-CoIIITPPS was less affected. Alkyl-CoIIITPPS formed two types of inclusion complex with Ph2CD, the alkyl groups in Type 1 being located at the opposite side of the phenyl linker of Ph2CD and those in Type 2 being located at the same side. The photodecomposition of C2H5-CoIIITPPS in Type 1 proceeded via an ethylperoxo complex, while that in Type 2 occurred via a radical pair generated in a narrow, rigid cage to form ethylene and CoIITPPS.