Synthesis and in vitro cytotoxicity studies of Pd(II) and Pt(II) acetamide complexes: Molecular structures of trans-[PdCl2(bzmta)2].DMF (bzmta = 2-acetylamino-6-methylbenzothiazole) and cis-[PtCl2(bzta)2].2DMF (bzta = 2-acetylaminobenzothiazole)

Synthesis, characterization, antibacterial, anticancer, and density‐functional theory studies of nano‐metal (II) oxime complexes

“…The spectra of the complexes of the type [M( κ 2 ‐Saly) 2 ] are displayed within 1593–1600 cm − 1 range, due to the ν(C═N) group; this band is shifted toward lower frequency than the free ligand (1623 cm −1 ), indicating the (C═N) group participates in the bonding with the metal ions 36–38 ; also, the spectra displayed the disappearance of a phenolic OH group (which appeared at 3394 cm −1 in free ligand). The deprotonation of a phenolic OH group and shift of the ν(C═N) frequency indicate the formation of the chelate ring through the oxygen atom of phenolate group and nitrogen atom of oxyiminohydroxyl group.…”

“…[ 43,44 ] The [Ni( κ 2 ‐Saly) 2 ] complexes showed two bands at 613 and 429 nm due to the 1 A 1g → 1 B 1g and 1 A 1g → 1 B 3g transitions, respectively, in square planner geometry around the Ni(II) ion; this complex is found to be diamagnetic. [ 36,44 ] The spectrum of complex 3 displayed a broadband with a shoulder 542 and 475 nm assigned to the 2 B 1g → 2 A 1g and 2 B 1g → 2 E g transitions in square planner geometry around the Cu(II) ion. This result was supported by the μ eff value at 1.67 BM, indicative of one unpaired electron per Cu +2 ion.…”

“…(C═N) group participates in the bonding with the metal ions [36][37][38] ; also, the spectra displayed the disappearance of a phenolic OH group (which appeared at 3394 cm À1 in free ligand). The deprotonation of a phenolic OH group and shift of the ν(C═N) frequency indicate the formation of the chelate ring through the oxygen atom of phenolate group and nitrogen atom of oxyiminohydroxyl group.…”

“…[5,7,9,41] The fourth characteristic band observed within 1016-1039 cm À1 range is due to the υ(N-O) mode; this band was shifted to higher energy of 23-46 cm À1 , indicating bonding of the Saly À ligand through the oxyimino nitrogen. [35][36][37] The IR spectra displayed a medium to weak intensity band within 416-443 and 459-503 cm À1 range, which is assigned to the υ(M-N) and υ(M-O) modes, respectively. [38][39][40] The electronic spectra of the salicylaldoxime ligand displayed three bands at 226, 262, and 311 nm assigned to the π !…”

“…1 B 3g transitions, respectively, in square planner geometry around the Ni(II) ion; this complex is found to be diamagnetic. [36,44] The spectrum of complex 3 displayed a broadband with a shoulder 542 and 475 nm assigned to the 2 B 1g ! 2 A 1g and 2 B 1g !…”