Probing a variation of the inverse-trans-influence in americium and lanthanide tribromide tris(tricyclohexylphosphine oxide) complexes.
| Autor: | Windorff CJ; Department of Chemistry and Biochemistry, Florida State University 95 Chieftan Way, RM. 118 DLC Tallahassee Florida 32306 USA talbrechtschmitt@fsu.edu., Celis-Barros C; Department of Chemistry and Biochemistry, Florida State University 95 Chieftan Way, RM. 118 DLC Tallahassee Florida 32306 USA talbrechtschmitt@fsu.edu., Sperling JM; Department of Chemistry and Biochemistry, Florida State University 95 Chieftan Way, RM. 118 DLC Tallahassee Florida 32306 USA talbrechtschmitt@fsu.edu., McKinnon NC; Department of Chemistry and Biochemistry, Florida State University 95 Chieftan Way, RM. 118 DLC Tallahassee Florida 32306 USA talbrechtschmitt@fsu.edu., Albrecht-Schmitt TE; Department of Chemistry and Biochemistry, Florida State University 95 Chieftan Way, RM. 118 DLC Tallahassee Florida 32306 USA talbrechtschmitt@fsu.edu. |
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| Jazyk: | angličtina |
| Zdroj: | Chemical science [Chem Sci] 2020 Feb 05; Vol. 11 (10), pp. 2770-2782. Date of Electronic Publication: 2020 Feb 05. |
| DOI: | 10.1039/c9sc05268b |
| Abstrakt: | The synthesis, characterization, and theoretical analysis of meridional americium tribromide tris(tricyclohexylphosphine oxide), mer-AmBr3(OPcy3)3 , has been achieved and is compared with its early lanthanide (La to Nd) analogs. The data show that homo trans ligands display significantly shorter bonds than the cis or hetero trans ligands. This is particularly pronounced in the americium compound. DFT along with multiconfigurational CASSCF calculations show that the contraction of the bonds relates qualitatively with overall covalency, i.e. americium shows the most covalent interactions compared to lanthanides. However, the involvement of the 5p and 6p shells in bonding follows a different order, namely cerium > neodymium ∼ americium. This study provides further insight into the mechanisms by which ITI operates in low-valent f-block complexes. Competing Interests: The authors declare no competing financial interest. (This journal is © The Royal Society of Chemistry.) |
| Databáze: | MEDLINE |
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