Kompleksi Co(III), Ni(II) i Cu(II) sa hidrazonima nekih 2-piridil-ketona

Abstract

U disertaciji su opisane sinteze i fizičko-hemijske karakterizacije 32 kompleksa kobalta(III), nikla(II) i bakra(II) sa ligandima S-metilizotiosemikarbazonom 2-acetilpiridina (HL¹), bis(S-metilizotiosemikarbazonom) 2,6-diacetilpiridina (H₂L²), tiosemikarbazonom-S-metilizotiosemikarbazonom 2,6-diacetilpiridina (HL³), 1-adamantoilhidrazonom 2-acetilpiridina (HL⁴) i 1-adamantoilhidrazonom di(2-piridil)-ketona (HL⁵). Kako ligandi HL³, HL⁴ i HL⁵ do sada nisu bili sintetisani, dobijeni rezultati ujedno predstavljaju i prve iz njihove koordinacione hemije. Iako je sa S-metilizotiosemikarbazonom 2-acetilpiridina poznato nekoliko kompleksa, do sada nijedan od njih nije strukturno okarakterisan, tako da su rezultati prikazani u ovoj disertaciji dali jasnu sliku o načinima koordinacije HL¹. Takođe, kako je sa H₂L² poznat vrlo malo broj kompleksa, dobijeni rezultati su dali značajan doprinos razumevanju koordinacione hemije ovog liganda. Gotovo svi sintetisani kompleksi (njih 27 od 32) su strukturno okarakterisani metodom rendgenske kristalografije. Odabrana jedinjenja su ispitana metodama termičke analize, a utvrđena je njihova antimikrobna i citotoksična aktivnost.

This thesis describes syntheses and physico-chemical characterizations of 32 complexes of cobalt(III), nickel(II) and copper(II), with ligands 2-acetylpyridine S-methylisothiosemicarbazone (HL¹), 2,6-dicetylpyridine bis(S-methylisothiosemicarbazone) (H₂L²), thiosemicarbazone-S-methylisothiosemicarbazone 2,6-dicetylpyridine (HL³), 2-acetylpyridine 1-adamantoylhydrazone (HL⁴), and di(2-pyridil)-ketone 1-adamantoylhydrazone (HL⁵). Since the ligands HL³, HL⁴, and HL⁵ were not synthetized hitherto, the obtained results are the first regarding their coordination chemistry as well. Even though there are several complexes reported with 2-acetylpyridine S-methylisothiosemicarbazone as a ligand, none of them was structurally characterized. Therefore, here presented results gave clear insight into coordination modes of the HL¹. Moreover, since there is limited number of complexes with H₂L² reported hitherto, the obtained results gave significant contribution to understanding of its coordination chemistry. Almost each synthetized complex (27 out of 32) was structurally characterized by means of single crystal X-ray crystallography. The selected compounds were characterized by thermal analysis, and their antimicrobial and cytotoxic activity were determined.