%0 Journal Article
%T Structure and Reactivity of (PPh<sub>4</sub>)<sub>3</sub>[W(CN)<sub>5</sub>O] &sdot; 7H<sub>2</sub>O. Kinetics and Mechanism of the Reaction with Molecular Oxygen
%A Burgess
%A John
%A Fawcett
%A John
%A Matoga
%A Dariusz
%A Russell
%A David R.
%A Samotus
%A Alina
%A Szklarzewicz
%A Janusz
%J -
%D 2001
%X Sa£¿etak The (PPh4)3[W(CN)5O] £¿ 7H2O has been synthesised and structurally characterised by X-ray diffraction. In the solid state and in ethanol-acetone mixture, the salt reacts with molecular oxygen giving (PPh4)2[W(CN)4O(O2)]. The progress of the solid state reaction was followed by measuring infrared spectra. The integrated intensities of the W=O, O£¿O and C¡ÔN bands changed with time according to the pseudo first-order kinetics. In solution, the kinetic measurements indicate that the rate law is of the form -d[complex]/dt = k[complex][O2]. The k value is equal to 5.78 (¡À0.26) mol-1 dm3 s-1 at 298 K. The activation parameters, ¦¤H£¿(k) and ¦¤S£¿(k), are 55 (¡À3) kJ mol-1 and -46 (¡À8) J K-1 mol-1, respectively. A reaction mechanism is proposed
%K Oxopentacyanotungstate(IV)
%K oxoperoxotetracyanotung-state(VI)
%K reaction with dioxygen
%K kinetics and mechanism
%U https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=194754