DFT-Supported Threshold Ionization Study of Chromium Biphenyl Complexes: Unveiling the Mechanisms of Substituent Influence on Redox Properties of Sandwich Compounds

2017 ◽  
Vol 23 (55) ◽  
pp. 13669-13675 ◽  
Author(s):  
Sergey Yu. Ketkov ◽  
Sheng-Yuan Tzeng ◽  
Pei-Ying Wu ◽  
Gennady V. Markin ◽  
Wen-Bih Tzeng
Keyword(s):  
Redox Properties ◽  
Threshold Ionization ◽  
Sandwich Compounds ◽  
Substituent Influence

Substituent effects on the electronic structures of sandwich compounds: new understandings provided by DFT-assisted laser ionization spectroscopy of bisarene complexes

2020 ◽  
Vol 49 (3) ◽  
pp. 569-577 ◽  
Author(s):  
Sergey Ketkov
Keyword(s):  
High Resolution ◽  
Transition Metal ◽  
Electronic Structures ◽  
Substituent Effects ◽  
Laser Ionization ◽  
Sandwich Complexes ◽  
Threshold Ionization ◽  
Sandwich Compounds

High-resolution threshold ionization spectroscopy reveals new aspects of substituent effects in transition-metal sandwich complexes.

Polymer oxidation catalyst containing acidic functional groups

1981 ◽  
Vol 46 (5) ◽  
pp. 1237-1247
Author(s):  
Zdeněk Prokop ◽  
Karel Setínek
Keyword(s):  
Functional Groups ◽  
Elevated Temperatures ◽  
Redox Properties ◽  
Oxidation Catalyst ◽  
Carbon Clusters ◽  
Oxidation Activity ◽  
Redox Sites ◽  
Styrene Divinylbenzene ◽  
Proportional Decrease ◽  
Polymer Oxidation

The catalyst containing redox sites in addition to acid functional groups was prepared by sulphonation of a macroporous chloromethylated styrene-divinylbenzene copolymer with concentrated sulphuric acid at elevated temperatures. Its activity was tested for the oxidation of 2-propanol by molecular oxygen at 120 °C and was found to be comparable to that of the iridium on carbon catalyst.Neutralisation of acid functional groups by alkali metal led to proportional decrease in the oxidation activity. The results of EPR spectroscopic study of these catalysts show that the redox properties of the polymer are caused by carbon clusters which are capable of electron exchange.

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