We have made predictions of the energies of optical absorption and emission of transition metals in MgO and CaO. The calculations are for those transitions in which substitutional Mn, Fe, Co or Ni ions change their charge state. Whilst agreement with experiment is good in some cases, it is ...
transition metalsChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.doi:10.1002/chin.200641226J....
We foundthat the valence charge of transition metals dramatically influencesthe reaction pathways. Catalytic reactions involving lower-oxidation-statetransition metals (M I /M III , M = Co and Rh) generallyfavor a [3 + 2] cyclization pathway, whereas those involving higheroxidation states (M III...
If the latter have p-electrons a negative term adds up to the heat of formation which apparently does not depend on the particular metals considered. As a result, simple rules for the alloying behaviour of transition metals are formulated which have an accuracy between 96 and 100%; the ...
The oxidation state of a transition metal in a crystal lattice is conventionally viewed as reflecting physical ionization: electrons have been transferred to or from the atom, leaving a point-like charged entity (ion). Such a picture is still sometimes i
Mn2+ and other transition metals at low concentration induce the right-to-left helical transformation of poly[d(G-C)]. The effects of the first-row transition metal ions on the right(B)- to left(Z)-handed helical transition of poly[d(G-C)] have been determined. The Z confor... J...
In a MIS (Metal/Insulator/Semiconductor) structure consisting of two terminals, a systematic analysis of the electrical charge transport mechanism through an insulator is essential for advanced electronic application devices such as next-generation memories based on resistance differences. Herein, we have...
Transition from metallic to tunneling regimes in superconducting microconstrictions: Excess current, charge imbalance, and supercurrent conversion 来自 dx.doi.org 喜欢 0 阅读量: 325 作者:GE Blonder,M Tinkham,TM Klapwijk 摘要: We propose a simple theory for the I-V curves of normal-superconducting...
Selective Nanocatalysis of Organic Transformation by Metals: Concepts, Model Systems, and Instruments Monodispersed transition metal (Pt, Rh, Pd) nanoparticles (NP) in the 0.8–15nm range have been synthesized and are being used to probe catalytic selectivi... GA Somorjai,Y Li - 《Topics in Ca...
At the transition point, the number of electrons at each lattice site changes abruptly. Therefore ρb is discontinuous on the two sides of the transition. Meanwhile Eq. (14) is still valid for either side. Since ρb and la, lb are different for different bubble phases, \(\partial {E...