The synthesis of silica-supported phosphine and phosphine oxide complexes of manganese(II) iodide and their reaction with sulphur dioxide
- 1 January 1987
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 1415-1417
- https://doi.org/10.1039/dt9870001415
Abstract
MnL2(Ph2PCH2CH2·sil)(sil = silica surface) can be prepared from Ph2PCH2CH2Si(OMe)3 either by reaction with dehydrated silica and then with anhydrous manganese (II) iodide or vice versa. This complex reacts rapidly with sulphur dioxide in the solid state to yield an adduct with an essentially 1:1 Mn:SO2 ratio. Applying a vacuum removes a considerable amount of the sulphur dioxide and the process of addition/desorption appears to be almost indefinitely repeatable. Peracetic acid oxidation of Ph2PCH2CH2Si(OMe)3 gives [Ph2P(O)CH2CH2Si(O-)3]n from which [{Mnl2[Ph2P(O)CH2CH2Si(O-)3]1·5}n] can be formed. This yellow complex rapidly deep red on exposure to sulphur dioxide to form a complex with a Mn:SO2 ratio of 1:0.8; however, the reaction does not appear to be reversible.This publication has 0 references indexed in Scilit: