concentration. The kinetic behaviour of the complexes depends markedly on the size of the substituents at the nitrogen atoms in the ligand L–L–L. When L–L–L = Me2N[CH2]2NMe[CH2]2NMe2 the second-order rate constants follow the usual nucleophilicity scale and in the case of the platinumcomplex the kinetic behaviour can be related to that of the unhindered complex [Pt(dien)(H2O)]2+(dien = H2N[CH2]2NH[CH2]2NH2)
Catalyzed substitutions on cationic palladium(II) complexes. III. Mercury(II) catalyzed displacement of coordinated thiocyanate and selenocyanate linkage isomers
study of Hg 2+ catalyzed solvolysis of linkageisomers [Pd(AAA)XCN/NCX] + (AAA = 1,1,7,7-tetraethyldiethylenetriamine (Et 4 dien) and 4-methyl-1,1,7,7-tetraethydiethylenetriamine (MeEt 4 dien); X = S, Se) has been carried out in methanol at 25 °C. The kinetic results show that the catalytic efficiency of mercury(II) in removing the thiocyanate or selenocyanate ligands is greater in the PdXCN substrates