Journal article
Aspects of the Solution Chemistry of Trans-Diammineplatinum(II) Complexes
TG Appleton, AJ Bailey, KJ Baraham, JR Hall
Inorganic Chemistry | Published : 1992
DOI: 10.1021/ic00040a017
Abstract
A convenient method for small-scale preparations of trans-[PtCl2(NH3)2] (e.g., for preparing 15N-labeled compounds) is to heat [Pt(NH3)4]Cl2 at 190-195 °C, under vacuum. 15N and 195Pt NMR spectra have been used to characterize in solution trans-diammineplatinum(II) complexes with aqua, chloro, nitrato, sulfato, acetato, and phosphato ligands. A solution of trans- [Pt(OH)(H2O)(NH3)2]+allowed to stand gives a precipitate [{trans-Pt(μ-OH)(NH3)2}n](NO3)n. 15N NMR spectra have been used to determine acid dissociation constants for trans-[Pt(H2O)2(15NH3)22+ (pKa1 4.35, pKa2 7.40) and for trans-[PtCl(H2O)(15NH3)2]+ (pKa1 5.63). © 1992, American Chemical Society. All rights reserved.