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• W2026990049 endingPage "5782" @default.
• W2026990049 startingPage "5777" @default.
• W2026990049 abstract "A new transition metalate system, [(η5-Me3SiC5H4)Fe(CO)(PPh3)]−M+ (SiFpPM; M = Li, Na), was synthesized via treatment of (η5-C5H5)Fe(CO)(PPh3)SiMe3 with sodium and lithium diisopropylamides (MN(iPr2); NADA and LDA, respectively). The utility of NADA was far superior to that of LDA, with shorter reaction times, lower reagent concentrations, and higher yields. Infrared spectroscopic analysis of the new ferrates indicated that their stability and utility were dependent upon the tight ion pairs Fe−CO−M; in the presence of coordinating solvents and ionophores the separated ion pairs formed led to the expulsion of the PPh3 and CO scavenging led to formation of the dicarbonylferrate [(η5-Me3SiC5H4)Fe(CO)2]−M+. Hexane was the solvent of choice for formation and use of the ferrates. Reactions of the new ferrates with MeI led to [SiFpP]CH3, whereas reactions with ClCH2SiMe2R (R = H, SiMe3) did not lead to the expected Fe−C bonded complexes [SiFpP]CH2SiMe2R but to high yields of the rearranged complexes [SiFpP]SiMe2CH2R. The presence of the thermally labile phosphine group readily produces a coordinatively unsaturated 16e species that permits Fe−CH2−SiMe2R to FeSiMe2CH2R rearrangements (previously observed photochemically with the simple Fp derivatives) to occur thermally." @default.
• W2026990049 created "2016-06-24" @default.
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• W2026990049 date "2009-09-14" @default.
• W2026990049 modified "2023-10-14" @default.
• W2026990049 title "The Utility of Sodium Diisopropylamide (NADA): Formation of a New Transition Metalate via Silyl Migration Chemistry, [(η⁵-Me₃SiC₅H₄)Fe(CO)(PPh₃)]⁻Na⁺ (SiFpPNa), and Resulting Thermal Rearrangements of the Complexes SiFpP−CH₂SiMe₂R (R = H, SiMe₃) to SiFpP−SiMe₂CH₂R" @default.
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• W2026990049 doi "https://doi.org/10.1021/om9006032" @default.
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