| 19882593 |
Kobetic R, Gembarovski D, Visnjevac A, Zinic B, Gabelica-Markovic V: ESI-MS studies of palladium (II) complexes with 1-(p-toluenesulfonyl) cytosine/cytosinato ligands. J Mass Spectrom. 2010 Jan;45(1):51-64.
The mononuclear complex Pd (1-TosC-N3)(2) Cl (2) (2) containing 1-(p-toluenesulfonyl) cytosine (1) as a ligand, as well as dinuclear complexes Pd (2)(1-TosC (-)-N3,N4)(4) (3) and Pd (2)(1-TosC (-)-N3,N4)(2) DMSO (2) Cl (2) (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 H (2) O/DMSO, CH (3) CN/DMSO and CH (3) OH/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. |
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