Meyer, Gerd (2019). Small cause - Great effect: What the 4f(n+1)5d(0) -> 4f(n)5d(1) configuration crossover does to the chemistry of divalent rare-earth halides and coordination compounds. J. Solid State Chem., 270. S. 324 - 335. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1095-726X
Full text not available from this repository.Abstract
The rare-earth elements in the divalent state, i.e. with oxidation number + 2, may either have the electron configuration 4f(n+1)5d degrees(symbolized as R2+) or 4f(n)5d(1) (R(3+)e(-)). As R2+ (R = Eu, Yb, Sm, Tm, Dy, Nd) they can either be contained in extended solids as in the insulating diiodides RI2, or in coordination complexes such as samarocene, Kagan's reagent, or TmI2(DME)(3). In the case of R(3+)e(-), the excess d electron can either be delocalized and cause (semi)metallic behavior in extended solids, e.g. in LaI2, or localized with the R(3+)e(-) = 4f(n)5d(1) ion trapped in a coordination complex with (super)bulky ligands such as in [K(2.2.2-crypt)][LaCp ''(3)]. Thus, the seemingly small cause of a one-electron configuration crossover, 4f(n+1)5d degrees <--> Hf(n)5d(1) has a large effect on the chemical behavior and physical properties of the respective compounds where atomic properties and ligand effects play important roles.
| Item Type: | Journal Article | ||||||||
| Creators: |
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| URN: | urn:nbn:de:hbz:38-157950 | ||||||||
| DOI: | 10.1016/j.jssc.2018.10.050 | ||||||||
| Journal or Publication Title: | J. Solid State Chem. | ||||||||
| Volume: | 270 | ||||||||
| Page Range: | S. 324 - 335 | ||||||||
| Date: | 2019 | ||||||||
| Publisher: | ACADEMIC PRESS INC ELSEVIER SCIENCE | ||||||||
| Place of Publication: | SAN DIEGO | ||||||||
| ISSN: | 1095-726X | ||||||||
| Language: | English | ||||||||
| Faculty: | Unspecified | ||||||||
| Divisions: | Unspecified | ||||||||
| Subjects: | no entry | ||||||||
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| Refereed: | Yes | ||||||||
| URI: | http://kups.ub.uni-koeln.de/id/eprint/15795 |
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