Cation-exchange kinetic studies on poly-o-toluidine Ce(IV) phosphate: a nano-composite and electrical conducting material

2011 ◽  
Vol 47 (7) ◽  
pp. 3241-3247 ◽  
Author(s):  
Asif Ali Khan ◽  
Tabassum Akhtar
Keyword(s):  
Cation Exchange ◽  
Kinetic Studies ◽  
Conducting Material ◽  
Nano Composite ◽  
Exchange Kinetic ◽  
Electrical Conducting

scholarly journals Electrical conductivity and ion-exchange kinetic studies of polythiophene Sn(VI)phosphate nano composite cation-exchanger

2019 ◽  
Vol 12 (7) ◽  
pp. 1652-1659 ◽  
Author(s):  
Anish Khan ◽  
Abdullah M. Asiri ◽  
Aftab Aslam Parwaz Khan ◽  
Sher Bahadar Khan
Keyword(s):  
Electrical Conductivity ◽  
Ion Exchange ◽  
Cation Exchanger ◽  
Kinetic Studies ◽  
Nano Composite ◽  
Exchange Kinetic

Electrical conductivity and acetaldehyde vapour sensing studies on synthetic polypyrrole–titanium(iv)sulphosalicylophosphate nanocomposite cation exchange material

2016 ◽  
Vol 40 (3) ◽  
pp. 2200-2210 ◽  
Author(s):  
Asif Ali Khan ◽  
Rizwan Hussain ◽  
Shakeeba Shaheen
Keyword(s):  
Electrical Conductivity ◽  
Cation Exchange ◽  
Conducting Material ◽  
Exchange Material

Polypyrrole–titanium(iv)sulphosalicylophosphate composite is a better sensing as well as conducting material than polypyrrole in the semiconducting range.

scholarly journals Investigations into the H-D Exchange of Malonganenone B

2021 ◽  
Author(s):  
◽  
Peter G K Clark
Keyword(s):  
Nmr Spectroscopy ◽  
Natural Product ◽  
Silver Oxide ◽  
Kinetic Studies ◽  
Acid Inhibition ◽  
First Order ◽  
Exchange Kinetic ◽  
Synthetic Studies

<p>H-D exchange at the formyl residue of the natural product malonganenone B was investigated. Models of the system were synthesised and displayed the same exchange. Kinetic studies, performed using NMR spectroscopy, found the exchange was first order with respect to base whilst displaying acid inhibition, in opposition to existing research. Cyclic species, including an N-heterocyclic carbene precursor, were formed that, in conjunction with the previous findings, suggested a carbene-based mechanism was in operation. Further synthetic studies were performed to demonstrate the existence of a carbene. With use of silver oxide, a fulvalene dimer and an organopalladium complex of this carbene were obtained, which provide further support towards a carbene-based mechanism being involved in the H-D exchange of malonganenone B.</p>

scholarly journals Investigations into the H-D Exchange of Malonganenone B

2021 ◽  
Author(s):  
◽  
Peter G K Clark
Keyword(s):  
Nmr Spectroscopy ◽  
Natural Product ◽  
Silver Oxide ◽  
Kinetic Studies ◽  
Acid Inhibition ◽  
First Order ◽  
Exchange Kinetic ◽  
Synthetic Studies

<p>H-D exchange at the formyl residue of the natural product malonganenone B was investigated. Models of the system were synthesised and displayed the same exchange. Kinetic studies, performed using NMR spectroscopy, found the exchange was first order with respect to base whilst displaying acid inhibition, in opposition to existing research. Cyclic species, including an N-heterocyclic carbene precursor, were formed that, in conjunction with the previous findings, suggested a carbene-based mechanism was in operation. Further synthetic studies were performed to demonstrate the existence of a carbene. With use of silver oxide, a fulvalene dimer and an organopalladium complex of this carbene were obtained, which provide further support towards a carbene-based mechanism being involved in the H-D exchange of malonganenone B.</p>

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