Stabilization of Pentaphospholes as η5 -coordinating Ligands. Stabilisierung von Pentaphospholen als η5-koordinierende Liganden
Riesinger, Christoph, Balazs, Gabor, Bodensteiner, Michael and Scheer, Manfred
(2020)
Stabilization of Pentaphospholes as η5 -coordinating Ligands. Stabilisierung von Pentaphospholen als η5-koordinierende Liganden.
Angewandte Chemie International Edition 59, pp. 23879-23884.
Date of publication of this fulltext: 25 Jan 2021 06:38
Article
DOI to cite this document: 10.5283/epub.44577
Abstract
Electrophilic functionalisation of [Cp*Fe(eta(5)-P-5)] (1) yields the first transition-metal complexes of pentaphospholes (cyclo-P5R). Silylation of1with [(Et3Si)(2)(mu-H)][B(C6F5)(4)] leads to the ionic species [Cp*Fe(eta(5)-P5SiEt3)][B(C6F5)(4)] (2), whose subsequent reaction with H2O yields the parent compound [Cp*Fe(eta(5)-P5H)][B(C6F5)(4)] (3). The synthesis of a carbon-substituted ...
Electrophilic functionalisation of [Cp*Fe(eta(5)-P-5)] (1) yields the first transition-metal complexes of pentaphospholes (cyclo-P5R). Silylation of1with [(Et3Si)(2)(mu-H)][B(C6F5)(4)] leads to the ionic species [Cp*Fe(eta(5)-P5SiEt3)][B(C6F5)(4)] (2), whose subsequent reaction with H2O yields the parent compound [Cp*Fe(eta(5)-P5H)][B(C6F5)(4)] (3). The synthesis of a carbon-substituted derivative [Cp*Fe(eta(5)-P5Me)][X] ([X](-)=[FB(C6F5)(3)](-)(4 a), [B(C6F5)(4)](-)(4 b)) is achieved by methylation of1employing [Me3O][BF4] and B(C6F5)(3)or a combination of MeOTf and [Li(OEt2)(2)][B(C6F5)(4)]. The structural characterisation of these compounds reveals a slight envelope structure for the cyclo-P5R ligand. Detailed NMR-spectroscopic studies suggest a highly dynamic behaviour and thus a distinct lability for2and3in solution. DFT calculations shed light on the electronic structure and bonding situation of this unprecedented class of compounds.
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Details
| Item type | Article | ||||
| Journal or Publication Title | Angewandte Chemie International Edition | ||||
| Publisher: | Wiley | ||||
|---|---|---|---|---|---|
| Place of Publication: | WEINHEIM | ||||
| Volume: | 59 | ||||
| Page Range: | pp. 23879-23884 | ||||
| Date | 2020 | ||||
| Institutions | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Manfred Scheer | ||||
| Identification Number |
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| Keywords | INDEPENDENT CHEMICAL-SHIFTS; HALF-SANDWICH COMPLEXES; TRIPLE-DECKER COMPLEXES; METALLOCENE CATALYSTS; BASIS-SETS; X-RAY; COVALENT RADII; PENTAPHOSPHAFERROCENE; AROMATICITY; PHOSPHORUS; electrophilic functionalisation; iron; pentaphosphole; polyphosphorus ligands; protonation | ||||
| Dewey Decimal Classification | 500 Science > 540 Chemistry & allied sciences | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-445773 | ||||
| Item ID | 44577 |
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