Kinetics of nucleophilic attack on co-ordinated organic moieties. Part 17. Addition of pyridines to [Fe(1–5-η-dienyl)(CO)₃]⁺cations (dienyl = C₆H₇, 2-MeOC₆H₆, or C₇H₉)

Abstract

Fe(2-NIeOC6H6)(CO),][BF,] (0.10 g) and pyridine (0.24 cm3) in CH,CN (20 cm3). The yield of pale yellow solid product was 0.079 g (64%)

Nucleophilicities and Carbon Basicities of Pyridines

“…[b] Calculated by Equation (1), using the E parameters of this Table and N and s for 1 b in CH 2 Cl 2 from Table 3. [c] Rate constants in acetonitrile calculated for 20 °C from the Eyring activation parameters Δ H ≠ and Δ S ≠ given in reference 5b.…”

Labelling of biologically active molecules with a cyclohexadiene tricarbonyl iron unit

“…Moreover, no bands appeared in 1100 cm -1 region, indicating that this compound was neutral. On the basis of previously published results [13,14] and on its 1 H NMR spectrum (low frequency shift of H 5′ resonance) we assigned compound 5 to the deprotonation product of 4. Interestingly, all the protons' peaks of the histamine moiety shifted back to the position of the parent compound peaks.…”

“…[Tricarbonyl (1-4-g-5-N-pyridiniocyclohexa-1,3-diene) iron][BF 4 ] 1 was prepared from the former complex according to a previously published procedure [13]. Nx-acetylhistamine, n-butylamine and N-acetyl cysteine were purchased from Sigma, Aldrich, and Acros, respectively, and used as received.…”