类型为trans-[Pt(NH3)2(L)(H2O)]n+的配合物中,水配体的pKa取决于与H2O对位的配体的性质,这是可以预料的。当L = NH3或NH2R,n = 2时,pKa约为6.0-6.4。当L = N-杂环配体时,通常观察到更高的水配体酸度,pKa值在4.7-5.4范围内。这些值介于L = H2O,n = 2 (4.4)和L = Cl−,n = 1 (5.7)之间。对于不同取代的吡啶配体L,H2O配体的pKa与杂环配体L的碱性之间存在线性关系,但这种关系相对较弱。
The pKa of the aqua ligand in complexes of the type trans-[Pt(NH3)2(L)(H2O)]n+ depends on the nature of the ligand trans to H2O, as expected. With L = NH3 or NH2R and n = 2, the pKa is around 6.0 - 6.4.With L = N-heterocyclic ligands generally higher acidities of the aqua ligands are observed, with pKa values being in the range of 4.7 - 5.4. These values are between those for L = H2O, n = 2 (4.4) and L = Cl−, n = 1 (5.7). For differently substituted pyridine ligands L a linear relationship exists between the pKa of the H2O ligand and the basicity of the heterocyclic ligand L, which is relatively weak, however
类型为trans-[Pt(NH3)2(L)(H2O)]n+的配合物中,水配体的pKa取决于与H2O对位的配体的性质,这是可以预料的。当L = NH3或NH2R,n = 2时,pKa约为6.0-6.4。当L = N-杂环配体时,通常观察到更高的水配体酸度,pKa值在4.7-5.4范围内。这些值介于L = H2O,n = 2 (4.4)和L = Cl−,n = 1 (5.7)之间。对于不同取代的吡啶配体L,H2O配体的pKa与杂环配体L的碱性之间存在线性关系,但这种关系相对较弱。