Fleischmann, Martin and Jones, James S. and Gabbai, Franois P. and Scheer, Manfred (2015) A comparative study of the coordination behavior of cyclo-P-5 and cyclo-As-5 ligand complexes towards the trinuclear Lewis acid complex (perfluoro-ortho-phenylene)mercury. CHEMICAL SCIENCE, 6 (1). pp. 132-139. ISSN 2041-6520, 2041-6539
Full text not available from this repository. (Request a copy)Abstract
Reactions of the cyclo-E-5 sandwich complexes [Cp*Fe(eta(5)-P-5)] (1) and [Cp*Fe(eta(5)-As-5)] (2) with the planar Lewis acid trimeric (perfluoro-ortho-phenylene) mercury [(o-C6F4Hg)(3)] (3) afford compounds that show distinctly different assemblies in the solid state. The phosphorus containing ligand 1 forms dimeric coordination units with two molecules of 3, with one P atom of each cyclo-P-5 ligand positioned in close proximity to the center of a molecule of 3. In contrast to the coordination behavior of 1, the arsenic analog 2 shows simultaneous interaction of three As atoms with the Hg atoms of 3. A DFT study and subsequent AIM analyses of the products suggest that electrostatic forces are prevalent over donor acceptor interactions in these adducts, and may play a role in the differences in the observed coordination behavior. Subsequently, a series of [(CpFe)-Fe-R(eta(5)-P-5)] (Cp-R = C(5)H(5-n)tBu(n), n = 1-3, 6a-c) sandwich complexes was prepared and also reacted with [(o-C6F4Hg)(3)]. In the solid state the obtained products 7a-c with increasing steric demand of the Cp-R ligands show no significant change in their assembly compared to the Cp* analog 4. All of the products were characterized by single crystal X-ray structure analysis, mass spectrometry and elemental analysis as well as NMR spectroscopy and IR spectrometry.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MAIN-GROUP COMPOUNDS; P-4 ACTIVATION; DATIVE BONDS; PHOSPHORUS; PENTAPHOSPHAFERROCENE; RING; NMR; AROMATICITY; ELEMENTS; ADDUCTS; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Manfred Scheer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Aug 2019 07:31 |
| Last Modified: | 05 Aug 2019 07:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/6379 |
Actions (login required)
 |
View Item |
