Synthesis and reactivity of platinum(II) cis-dialkyl, cis-alkyl chloro, and cis-alkyl hydrido bis-N-heterocyclic carbene chelate complexes
Platinum(II) cis-dimethyl and cis-dineopentyl complexes bearing the alkyl-substituted bis-NHC ligands Lt-Bu, LMe, and Li-Pr (Lt-Bu = 1,1′-di-tert-butyl-3,3′-methylenediimidazolin-2,2′-diylidene, LMe = 1,1′-dimethyl-3,3′-methylenediimidazolin-2,2′-diylidene, Li-Pr = 1,1′-diisopropyl-3,3′-methylenedii...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
May 20, 2015
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| In: |
Organometallics
Year: 2015, Volume: 34, Issue: 12, Pages: 2870-2878 |
| ISSN: | 1520-6041 |
| DOI: | 10.1021/acs.organomet.5b00204 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acs.organomet.5b00204
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| Author Notes: | Matthias Brendel, René Engelke, Vidya G. Desai, Frank Rominger, and Peter Hofmann |
| Summary: | Platinum(II) cis-dimethyl and cis-dineopentyl complexes bearing the alkyl-substituted bis-NHC ligands Lt-Bu, LMe, and Li-Pr (Lt-Bu = 1,1′-di-tert-butyl-3,3′-methylenediimidazolin-2,2′-diylidene, LMe = 1,1′-dimethyl-3,3′-methylenediimidazolin-2,2′-diylidene, Li-Pr = 1,1′-diisopropyl-3,3′-methylenediimidazolin-2,2′-diylidene) as well as novel cis-alkyl chloro and cis-alkyl hydrido compounds were synthesized. The reactivity of the dimethyl complexes toward dichloromethane and methanol was investigated. Reductive elimination of alkanes from cis-alkyl hydrido complexes requires much higher temperatures than in related bisphosphine systems, which limits their applicability for the generation of reactive, bent platinum(0) d10-ML2 fragments for bond-activation chemistry. The platinum(II) complexes were characterized by NMR and IR spectroscopy, mass spectrometry, elemental analysis, and X-ray diffraction in most cases. |
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| Item Description: | Gesehen am 28.05.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1520-6041 |
| DOI: | 10.1021/acs.organomet.5b00204 |