Journal article
Groups 9 and 10 Complexes of C–Donor Ligands Derived from Pyridinium-Stabilized Phosphorus Ylides
Organometallics, Vol.43(14), pp.1608-1618
07/22/2024
DOI: 10.1021/acs.organomet.4c00204
Appears in UI Libraries Support Open Access
Abstract
The design and synthesis of η1-C-donor ligands that combine nucleophilic 4-alkylidene dihydropyridines with phosphorus ylides is reported. Positioning of a phosphonium group at the picolyl carbon of 4-alkylpyridinium salts allows for conversion to phosphonium-stabilized alkylidene dihydropyridine ligands under mildly basic conditions. The resulting (Me-N-Py-CH-PPh2-R)(BF4) ligands coordinate Pd(II)Cl2 as monodentate (R = Ph) or bidentate ligands (R = 2-Py, CH2PPh2, or CH2CH2PPh2), and six new Pd(II) complexes were spectroscopically characterized. Structural features of four of the complexes were further defined through single-crystal X-ray diffractometry. The ligands in these complexes are best described as phosphorus ylide C-donors that are stabilized by adjacent N-methylpyridinium rings. In addition, two Rh(I) complexes were successfully prepared and characterized, including a Rh(I) carbonyl complex which exhibited a low νCO of 1984 cm–1, indicative of the strong σ-donor properties of these ligands. The ability of a Pd complex to catalyze Suzuki cross-coupling reactions was examined.
Details
- Title: Subtitle
- Groups 9 and 10 Complexes of C–Donor Ligands Derived from Pyridinium-Stabilized Phosphorus Ylides
- Creators
- Anushree Poddar - University of IowaF. Christopher Pigge - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Organometallics, Vol.43(14), pp.1608-1618
- Publisher
- American Chemical Society
- DOI
- 10.1021/acs.organomet.4c00204
- ISSN
- 0276-7333
- eISSN
- 1520-6041
- Language
- English
- Electronic publication date
- 07/04/2024
- Date published
- 07/22/2024
- Academic Unit
- Pharmaceutical Sciences and Experimental Therapeutics; Radiology; Chemistry
- Record Identifier
- 9984656558602771
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