Naslov
ESI-MS studies of palladium (II) complexes with 1-(p-toluenesulfonyl)cytosine/cytosinato ligands

Autori
Kobetić, Renata ; Gembarovski, Dubravka ; Višnjevac, Aleksandar ; Žinić, Biserka ; Gabelica-Marković, Vesna

Izvornik
Journal of mass spectrometry (1076-5174) 45 (2010), 1; 51-64

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
palladium (II) complexes ; 1-(p-toluenesulfonyl)cytosine ; dimethyl sulfoxide ; methanol ; ESI-MS

Sažetak
The mononuclear complex Pd(1-TosC-N3)2Cl2 (2) containing 1-(p-toluenesulfonyl)cytosine (1) as a ligand, as well as dinuclear complexes Pd2(1-TosC--N3, N4)4 (3) and Pd2(1-TosC--N3, N4)2DMSO2Cl2 (4) containing the ligand anion (1-TosC-), was mass analyzed by electrospray ionization ion trap MS/MS and high resolution MS. Complexes 3 and 4 were obtained by recrystallization of 2 from DMF and DMSO, respectively. The behavior of complex 2 in different solutions was monitored by electrospray ionization mass spectrometry (ESI-MS). Under the applied ESI-MS conditions, complex 2 in methanol reorganized itself dominantly as new complex 3 and the solvent did not coordinate the formed species. In H2O/DMSO, CH3CN/DMSO and CH3OH/DMSO solutions, complex 2 formed several new species with solvent molecules involved in their structure, e.g. complex 4 was formed as the major product. The newly formed species were also examined by LC-MS-DAD, confirming the solvent induced reorganization and the solution instability of complex 2.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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