Bond Strength in Transition Metals
نویسندگان
چکیده
منابع مشابه
Metal-metal bond lengths in complexes of transition metals.
In complexes of the transition metals containing clusters of metal atoms the cobalt-cobalt bond lengths are almost always within 1 pm of the single-bond value 246 pm given by the enneacovalent radius of cobalt, whereas most of the observed iron-iron bond lengths are significantly larger than the single-bond value 248 pm, the mean being 264 pm, which corresponds to a half-bond. A simple discussi...
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An equation relating the strength (bondforming power) of an spd hybrid bond orbital to the angles it makes with other bond orbitals is formulated and applied in the discussion of the structures of transition-metal carbonyls and other substances by the valence-bond method. The rather simple theory gives results that agree well with those obtained by the complicated and laborious calculation of s...
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A qualitative account of the occurrence and magnitude of superconductivity in the transition metals is presented, with a primary emphasis on elements of the first row. Correlations of the important parameters of the Bardeen-Cooper-Schrieffer theory of superconductivity are highlighted with respect to the number of d-shell electrons per atom of the transition elements. The relation between the s...
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Transition metals are involved in essential biological processes in plants since they are cofactors of metalloproteins and also act as regulator elements. Particularly, plant chloroplasts are organelles with high transition metal ion demand because metalloproteins are involved in the photosynthetic electron transport chain. The transition metal requirement of photosynthetic organisms greatly ex...
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We review the recent progress in the theory of electron correlations in transition metals. Both qualitative picture and the quantitative results obtained for the magnetic moments, exchange splittings, Stoner parameter and magnetovolume effect of Fe, Co and Ni are presented and discussed in detail.
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 2000
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed077p1410.4