Photoinduced isomerisation of cis-[M(L-S,O)2] (M = Pt II and PdII) complexes of N,N-diethyl-N′-3,4,5- trimethoxybenzoylthiourea: Key to preparation of the trans isomer

Hanekom D. ; McKenzie J.M. ; Derix N.M. ; Koch K.R. (2005)

Article

In acetonitrile solutions at room temperature, cis-[M(L-S,O)2] PtII and PdII complexes of N,N-diethyl-N′-3,4,5- trimethoxybenzoylthiourea undergo reversible photoinduced isomerisation to the corresponding trans isomer upon irradiation with visible light in the 320-570 nm range, the rate and extent of isomerisation being significantly higher for the cis-[Pd(L-S,O)2] complex compared to the PtII analogue; in the dark trans-[M(L-S,O)2] cleanly reverts back to the cis complex at a rate dependent on the solution temperature, indicating a thermally controlled reverse process. © The Royal Society of Chemistry 2005.

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