Reactivity of trans - [Ru (NH3 )4P (OEt )3NO]X3 (X = PF6-, CF3COO- ) : modulation of the release of NO by the trans-effect
作者： Luiz GF Lopes , Eduardo E Castellano , Antonio G Ferreira , Celso U Davanzo , Michael J Clarke
DOI: 10.1016/J.ICA.2004.07.014
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摘要: Abstract The synthesis, characterization and reactivity of trans - [ Ru ( NH 3 ) 4 P OEt NO ] X = PF 6 CF COO are presented. X-ray structure trans-[Ru(NH3)4P(OEt)3NO](CF3COO)3 · 3CF3COOH indicates coordination the nitrosyl as with a Ru–N–O angle 175.1(8)° Ru–NO bond length 1.774(8) A. Loss 2 from trans-[Ru(NH3)4P(OEt)3NO]3+ is pH dependent kobs (s−1) = (k0Ka + k1[H+])/([H+] + Ka)], where k0 = 2 × 10−5 s−1, k1 = 0.40 ± 0.03 pKa = 8.6 ± 0.3. complex undergoes one-electron reduction (E0 = 0.14 V versus NHE) involving coordinated group followed by dissociation NO, which facilitated phosphito ligand (k−NO = 0.97 s−1 at 25 °C 5.0).
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