Naslov
ESI-MS studies of mixed-ligand Fe(II) complexes containing 1, 10-phenanthroline and 1, 10-phenanthroline-5, 6-dione as ligands

Autori
Kobetić, Renata ; Gembarovski, Dubravka ; Baranović, Goran ; Gabelica, Vesna

Izvornik
Journal of mass spectrometry (1076-5174) 43 (2008), 6; 753-764

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

Ključne riječi
iron(II) ; mixed ligands complexes ; mass spectrometry

Sažetak
In order to monitor the progression of the synthesis and the separation of novel mixed-ligand iron complexes containing 1, 10-phenanthroline, 1, 10-phenanthroline-5, 6-dione, and NCS- as ligands all products were mass analyzed by electrospray ionization ion trap MS/MS. The spectra of methanol (MeOH), acetonitrile (ACN), water, and ethanol (EtOH) solutions were collected and the results were compared. It was detected under applied electrospray ionization mass spectrometry (ESI-MS) conditions that MeOH, water, and EtOH formed solvent clusters around the free or complexed 1, 10-phenanthroline-5, 6-dione. Owing to the solvent-ligand hydrogen-bond formation, the solvent-ligand clusters were formed in the polar protic solvents. The number of protic solvent molecules per complex ion in cluster depended on the number of 1, 10-phenanthroline-5, 6-dione ligands in the complex ion. Unlike MeOH, EtOH, or water, ACN was not involved in the formation of the solvent clusters with the iron complexes containing 1, 10-phenanthroline-5, 6-dione as ligand. We also showed that the NCS- group under certain solvent conditions served as a bidentate ligand.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA