Complexes of dibromo(ethylenediamine)-palladium(II) observed from aqueous solutions by electrospray mass spectrometry.

作者: Stephan B. H. Bach , Tiffanee G. Sepeda , Grant N. Merrill , Judith A. Walmsley

DOI: 10.1016/J.JASMS.2005.04.011

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摘要: Aqueous solutions of dichloro(ethylenediamine)palladium(II) were investigated using electrospray mass spectrometry (ESMS). The most abundant peak (m/z 436.8) was attributed to the dimeric Pd(en)Cl2·Pd(en)Cl+ ion. We conjecture that structures observed ions arise from clustering hydrolysis products parent compound. This hypothesis tested experimentally by carrying out a series collision-induced dissociation (CID) experiments and deuterium exchange reactions. It also assessed performing density functional theory (DFT) calculations, which optimized reaction energetics obtained. These results compared with our earlier ESMS study an aqueous Pd(en)Br2 solution. Calculations carried on system facilitate comparisons. Conclusions are drawn regarding species present in two solutions.

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