Bridge-splitting of trans-[PtCl2(η2-CH2double bond; length as m-dashCH2)]2 by weak nucleophiles: Crystal and molecular structure of trans-[PtCl2(η2-CH2double bond; length as m-dashCH2)(MeCN)]

Bridge-splitting of trans-[PtCl2(η2-CH2double bond; length as m-dashCH2)]2, 1, by L in dichloromethane yields trans-[PtCl2(η2-CH2double bond; length as m-dashCH2)(L)] (L = THF, 2, or MeCN, 3) with bridge-splitting equilibrium constants of 0.0289 ± 0.0007 and 3601 ± 215 mol−1 dm3, respectively, as determined by UV/Vis measurements. The reaction of 3 in MeCN with Cl− is essentially quantitative. The crystal structure of trans-[PtCl2(η2-CH2double bond; length as m-dashCH2)(CH3CN)] is reported.