Passivity electron configuration

Where visible absorption peaks have been found in natural photoreceptor material, no NMR or X-ray crystallographic data has been put forward to demonstrate the presence of a retinene in the material (See Chapter 7). It is proposed here that any such tests will demonstrate the presence of a Rhodonine instead. Rhodonine contains two polar groups separated by a conjugated carbon chain. It is further proposed that opsin is only present as a completely passive substrate. Its association with the liquid crystalline Rhodonine is via a weak hydrogen bond that does not change the electronic configuration of the Rhodonines. 

F. Mansfeld and H.H. Uhlig, Passivity in Copper-Nickel-Aluminum Alloys-A Confirmation of the Electron Configuration Theory, J. Electrochem. Soc., Vol 115, 1968, p 900-904... 

Because present-day theory of the metallic state does not treat the situation, the electron configuration of alloys made up of two or more transition metals with relation to their passive behavior is not as well understood as for the copper-nickel system. Nevertheless, useful simphfying assumptions can be made. For example, the most passive component of an alloy is assumed to be the acceptor element, which tends to share electrons donated by the less passive components. 

Lee etal. [129] have studied adsorption configuration and local ordering of sdicotungstate anions (STA) on Ag(lOO) electrode surfaces. Voltammetric studies have shown that STA passivates the Ag surface and thus slows down the electron transfer the dissolved redox species participate in. STA species is oriented with its fourfold axis perpendicular to the Ag(lOO) surface and the center of the STA molecule is located 4.90 A above the top layer of the Ag substrate. From the analysis of bond lengths, it has been found that four terminal O atoms are located near the hollow sites and that an Ag—O bond length is... 

Here Ko stands for all closed and open shells whose electrons do not participate in the transition (passive shells). It is called the core configuration or simply the core. K describes the electrons (usually one or two electrons above the core), one of which performs the transition. Typical patterns of the first sort of transitions are given by the following configurations ... 

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