Author
D.B. Powell
Bio: D.B. Powell is an academic researcher from University of Cambridge. The author has contributed to research in topics: Infrared spectroscopy & Infrared. The author has an hindex of 2, co-authored 2 publications receiving 152 citations.
Topics: Infrared spectroscopy, Infrared, Ethylene, Ethylenediamine, Molecule
Papers
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TL;DR: In this paper, the infra-red spectra of ethylenediamine complexes of Pt II, Pd II, Cu II and Ni II have been compared and an assignment has been made to the fundamental vibrations of the molecules on the basis of comparison with the Spectra of molecules whose assignment is established.
100 citations
TL;DR: In this paper, a comparison of the infrared spectrum of a number of complexes in which ethylene is co-coordinated to platinum and palladium is made. And a fairly complete assignment has been made of the fundamental vibration frequencies of the bonded ethylene molecule.
52 citations
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TL;DR: In this paper, a mechanism for the polymerization of olefins is proposed, which involves to a first approximation an electronic rearrangement and only small nuclear displacements.
817 citations
TL;DR: In this paper, a metal-surface selection rule has been used in interpreting infrared spectra from molecules adsorbed on finely-divided metals, which has been shown to be applicable to the case of catalysts with supported etal catalysts.
284 citations
244 citations
TL;DR: In this paper, Raman and infrared spectra have been obtained for K[PtCl3(C2H4)]·H2O (Zeise's salt), K[pCl3[C2D4]·H 2O, and [ptCl2[C 2H4]2]2.
81 citations
TL;DR: Results demonstrate that both Pd NPs and CNS play important roles in hydrogen adsorption, particularly at a lower temperature and for CNS with deficient sites, which bring about a H(2) adsorptions greater than those on other Pd-loaded nanocarbon materials reported so far.
Abstract: Carbon nanosheet (CNS)−Pd nanosized particle (NP) composites were synthesized by using graphite oxide (GO) and bis(ethylenediamine)palladium(II) (Pd(en)22+) as the precursors, and their structure and adsorption properties were examined. It was found that the Pd(en)22+ complex ions can be intercalated into GO layers highly efficiently to form a layered structure containing a large amount of Pd (∼12 wt %). By the subsequent chemical reduction, Pd NPs (2−6 nm in size) are well dispersed between CNS to form a CNS−Pd NP composite and serve as spacers to increase the porosity of the composite. Hydrogen adsorption results demonstrate that both Pd NPs and CNS play important roles in hydrogen adsorption, particularly at a lower temperature and for CNS with deficient sites, which bring about a H2 adsorption greater than those on other Pd-loaded nanocarbon materials reported so far. The unique composite nanostructure having large contents of Pd NPs (20−25 wt %) stabilized by CNSs is hopeful to be applied to the fiel...
62 citations