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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >SOME SOLID STATE CHEMISTRY WITH HOLES - ANION-CATION REDOX COMPETITION IN SOLIDS
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SOME SOLID STATE CHEMISTRY WITH HOLES - ANION-CATION REDOX COMPETITION IN SOLIDS

机译：带有孔的某些固态化学-固体中的阴离子-阳离子氧化还原竞争

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The raising up of the sp anionic band when going from oxides to the less electronegative sulphides, selenides or tellurides facilitates redox anion-cation interactions involving the d levels of transition metal cations and the sp levels of anionic groups. Holes may appear at the top of this sp valence band, These holes allow to practice a nice soft chemistry of the redox type by neutralizing them with electrons, One can also stabilize particular structural types. Finally, one can recognize three domains among transition elements, (i) on the left part of the period table layered structures are observed which involve M4+ cations and (chalcogen)(2-) anions, (ii) then the formation of sets of metal-metal bonds is observed, the geometry of which depends on both the initial electronic population and the electronic transfer to the metal, (iii) on the right hand side the highest oxidation state of the metals are not active anymore and the holes at the top of the sp band are taken up by a catenation of the anions. [References: 37]
机译：当从氧化物变成电负性较小的硫化物，硒化物或碲化物时，sp阴离子带的升高促进了涉及d级过渡金属阳离子和sp级阴离子基团的氧化还原阴离子-阳离子相互作用。空穴可能出现在该价带的顶部。这些空穴可以通过用电子中和它们来实现氧化还原类型的良好软化学反应。人们还可以稳定特定的结构类型。最后，可以识别过渡元素之间的三个域，（i）在元素周期表的左侧观察到分层结构，其中涉及M4 +阳离子和（硫属元素）（2-）阴离子，（ii）然后形成金属集-观察到金属键，其几何形状取决于初始电子数量和电子向金属的转移，（iii）在右侧，金属的最高氧化态不再起作用，并且顶部的孔sp波段的大部分被阴离子的串联所占据。 [参考：37]

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