dichloromethane in dichloromethane byproducts: H2O, Ph3PO; a soln. of (Ph3P)2PtO2 in CH2Cl2 was kept under Ar in the dark for 15 dor in daylight for 5-10 d; solvent was removed under oil-pump vac., residue washed with 30/70 benzene-pentane, benzene, dried in vacuo and recrystd. from CHCl3 to give pure (Ph3P)2Pt(CO)3; elem. anal., before recrystn. it was contaminated with ca. 3percent of cis-(Ph3)P)2PtCl2;

dichloromethane in dichloromethane-d2 byproducts: H2O; a soln. of (Ph3P)2PtO2 and CH2Cl2 in CD2Cl2 was kept in the dark or in daylight for 7 d, reaction was monitored by (31)P NMR spectroscopy; (31)P NMR anal. of the reaction mixt., the presence of H2O was confirmed by (1)H NMR;

1: ethanol 2: HCl / ethanol View Scheme

dichloromethane in dichloromethane byproducts: H2O, Ph3PO; a soln. of (Ph3P)2PtO2 in CH2Cl2 was kept under Ar in the dark for 15 dor in daylight for 5-10 d; solvent was removed under oil-pump vac., residue washed with 30/70 benzene-pentane, benzene, dried in vacuo and recrystd. from CHCl3 to give pure (Ph3P)2Pt(CO)3; elem. anal., before recrystn. it was contaminated with ca. 3percent of cis-(Ph3)P)2PtCl2;

dichloromethane in dichloromethane-d2 byproducts: H2O; a soln. of (Ph3P)2PtO2 and CH2Cl2 in CD2Cl2 was kept in the dark or in daylight for 7 d, reaction was monitored by (31)P NMR spectroscopy; (31)P NMR anal. of the reaction mixt., the presence of H2O was confirmed by (1)H NMR;

1: ethanol 2: HCl / ethanol View Scheme

dichloromethane in dichloromethane byproducts: H2O, Ph3PO; a soln. of (Ph3P)2PtO2 in CH2Cl2 was kept under Ar in the dark for 15 dor in daylight for 5-10 d; solvent was removed under oil-pump vac., residue washed with 30/70 benzene-pentane, benzene, dried in vacuo and recrystd. from CHCl3 to give pure (Ph3P)2Pt(CO)3; elem. anal., before recrystn. it was contaminated with ca. 3percent of cis-(Ph3)P)2PtCl2;

dichloromethane in dichloromethane-d2 byproducts: H2O; a soln. of (Ph3P)2PtO2 and CH2Cl2 in CD2Cl2 was kept in the dark or in daylight for 7 d, reaction was monitored by (31)P NMR spectroscopy; (31)P NMR anal. of the reaction mixt., the presence of H2O was confirmed by (1)H NMR;

1: ethanol 2: HCl / ethanol View Scheme

in chloroform Irradiation (UV/VIS); in a deaerated soln. of CHCl3; singlet O2 was scavenged by 2,2,6,6-tetramethylpiperidine and detected by ESR, or by 1,3-diphenylisobenzofurane and detected by UV;