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Kinetic Study of the Homogenous Methanolysis of Tetraphosphorus Decasulphide

DOI: 10.1039/DT9870001897

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1897 - 1900 (1987)

Update date:2022-08-11

Topics:

Authors:

Bordauducq, PaulBordauducq, Paul

Demarcq, Michel C.Demarcq, Michel C.

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Article abstract of DOI:10.1039/DT9870001897

The rate of homogenous methanolysis of pure P4S10, dissolved is CS2, has been measured at 0, 15, 25, and 35 deg C for various MeOH:P4S10 molar ratios.The sole product detected was (MeO)2PS2H.At not too low concentrations, the reaction is virtually first order in and second order in , owing probably to an autocatalytic process.The multistep reaction is kinetically controlled by the initial attack on P4S10; this is tentatively explainedby the rigidity and geometry of the P4S10 molecule and/or by the spontaneous formation of reactive dithioxophosphoranes ZP(=S)2 P(S)S-> from all alcoholysis intermediates.Calculaed activation parameters are discussed.Novel data on the solubility of P4S10 are reported.

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Product name:Dimethylphosphorodithioate

Cas No:756-80-9

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