“…In summary, for the platinum complexes discussed, while the strength of the Pt-E bonds would be expected to increase from O to S to Se, it is also the case that the ring strain increases from O to S to Se. Hence the ease of a � 2 !� 1 !� 2 interconversion depends not only the inherent strength of the Pt-E bond, but the fact that it is offset by the ring strain, such that the rates of interconversion are in the order O > Se > S. Dman complexes have been used in asymmetric syntheses (Yeo et al, 2005;See Leng Yap et al, 2014) and, coupled with hemilabile ligands, they have the potential of improved selectivity. Data collection: PROCESS-AUTO (Rigaku, 1998); cell refinement: PROCESS-AUTO (Rigaku, 1998); data reduction: CrystalStructure (Rigaku and Rigaku Americas, 2010); program(s) used to solve structure: SIR92 (Altomare et al, 1994); program(s) used to refine structure: SHELXL2018 (Sheldrick, 2015); molecular graphics: OLEX2 (Dolomanov et al, 2009); software used to prepare material for publication: OLEX2 (Dolomanov et al, 2009).…”