Rhodium-catalyzed transfer hydrogenation with aminophosphines and analysis of electrical characteristics of rhodium(I) complex/n-Si heterojunctions


Aydemir M., Ocak Y. S. , Rafikova K., Kystaubayeva N., Kayan C., Zazybin A., ...More

APPLIED ORGANOMETALLIC CHEMISTRY, vol.28, no.6, pp.396-404, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Review
  • Volume: 28 Issue: 6
  • Publication Date: 2014
  • Doi Number: 10.1002/aoc.3140
  • Title of Journal : APPLIED ORGANOMETALLIC CHEMISTRY
  • Page Numbers: pp.396-404
  • Keywords: aminophosphine, rhodium, transfer hydrogenation, heterojunction, temperature sensor, ASYMMETRIC TRANSFER HYDROGENATION, TRANSITION-METAL-COMPLEXES, AROMATIC KETONES, RUTHENIUM(II) COMPLEXES, STEREOSELECTIVE HYDROGENATION, PALLADIUM(II) COMPLEXES, ORGANIC SEMICONDUCTORS, EFFICIENT CATALYSTS, FINE CHEMICALS, LIGANDS

Abstract

A series of novel neutral mononuclear rhodium(I) complexes of the P?NH ligands have been prepared starting from [Rh(cod)Cl](2) complex. Structural elucidation of the complexes was carried out by elemental analysis, IR and multinuclear NMR spectroscopic data. The complexes were applied to the transfer hydrogenation of acetophenone derivatives to 1-phenylethanol derivatives in the presence of 2-propanol as the hydrogen source. Catalytic studies showed that all complexes are also excellent catalyst precursors for transfer hydrogenation of aryl alkyl ketones in 0.1m iso-PrOH solution. In particular, [Rh(cod)(PPh2NH?C6H4?4-CH(CH3)(2))Cl] acts as an excellent catalyst, giving the corresponding alcohols in excellent conversion up to 99% (turnover frequency588h(-1)). Furthermore, rhodium(I) complexes have been used in the formation of organic-inorganic heterojunction by forming their thin films on n-Si and evaporating Au on the films. It has been seen that the structures have rectifying properties. Their electrical properties have been analyzed with the help of current-voltage measurements. Finally, it has been shown that the complexes can be used in the fabrication of temperature and light sensors. Copyright (c) 2014 John Wiley & Sons, Ltd.