Free-radical displacement reactions at a transition-metal centre: bimolecular homolytic substitution (SH2) at square-planar PtII
Abstract
The displacement of the free radical R· from the complex cis-PtR2X2(R = Me, Et, Me3SiCH2, or PhCH2; X = PAlk3 or PMe2Ph; Alk = Et, Prn, or Bun) by ButO· or PhS· is demonstrated by e.s.r. spectroscopy (direct detection or spin-trapping) or by initiation of a chain reaction involving R·.
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