EPR and pulse radiolysis studies on electron transfer in transition metal dithiolenes at the surface of colloidal TiO2

EPR and pulse radiolysis studies on electron transfer in transition metal dithiolenes at the... One-electron reduction of several transition metal bis-dithiolenes at the surface of TiO2 particles and in aqueous solutions were studied. Electron Paramagnetic Resonance (EPR) was used to study the reduction at the particle surface and the pulse radiolysis technique was employed for aqueous solutions. Variable temperature EPR measurements following band-gap excitation of the particles showed the disappearance of signals due to the paramagnetic Ni(III) and Cu(II) complexes of 4,5-dimercaptophthalic acid (DMPA), 3,4-dimercaptotoluene (TDT) and maleonitrile dithiolate (MNT), with the surface electron signals vanishing concomitantly. Similarly, the diamagnetic Cu(III) complex of TDT was reduced to the paramagnetic Cu(II) complex. The bimolecular rate constants for the reaction of Ni(III)DMPA and Ni(II)MNT with ea-qwere determined to be 4.3 × 109 dm3 mol-1 s-1 and 1.3× 1010 dm3 mol-1 s-1, respectively. Pulse radiolysis results were used to distinguish between reduction with electron and · CH2OH radical. It is inferred that ea-q · reduces the metal centre while · CH2OH adds to the ligand. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

EPR and pulse radiolysis studies on electron transfer in transition metal dithiolenes at the surface of colloidal TiO2

Loading next page...
Brill Academic Publishers
Copyright © 2001 by VSP
Chemistry; Inorganic Chemistry; Physical Chemistry; Catalysis
Publisher site
See Article on Publisher Site

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial