Journal article

Mapping charged silver(I) adenine polymers, [Ad(x) Ag-y-zH]((y-z) ), via electrospray ionization tandem mass spectrometry experiments

AK Vrkic, T Taverner, RAJ O'Hair

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | ROYAL SOC CHEMISTRY | Published : 2002

Abstract

Electrospray ionization mass spectrometry of solutions containing adenine [or various methylated derivatives] (M) and AgNO3 yields polymeric [Mx + Agy - zH](y - z)+ species. The stoichiometry, collision-induced dissociation fragmentation pathways, and ion-molecule reactions with H2O, CH3OH, CH3CN, BuNH2, and pyridine for the adenine- and 1-methyladenine-silver complexes are consistent with model polymeric structures that comprise of [M2Ag2] closed "dimers". The [(adenine)2Ag2] subunits involve N(3) and N(9) complexation and are linked via a bridging silver ion at the N(7) position. In contrast, the results from the 6-N,N-dimethyladenine-silver complexes are more consistent with a "linear mod..

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