Synthesis, characterization, crystal structure and toxicity evaluation of Co (II), Cu (II), Mn (II), Ni (II), Pd (II) and Pt (II) complexes with Schiff base derived from 2‐chloro‐5‐(trifluoromethyl)aniline

Abstract

A bidentate NO donor Schiff base, 2-(((2-chloro-5-(trifluoromethyl)phenyl) imino)methyl) phenol (HL 1) and its complexes [Co(L 1) 2 (H 2 O) 2 ] (1), [Cu(L 1) 2 ] (2), [Mn(L 1) 2 (H 2 O) 2 ] (3), [Ni(L 1) 2 (H 2 O) 2 ] (4), [Pd 2 (L 1) 2 (OAc) 2 Á1.16H 2 O] (5), [Pt (L 1) 2 ] (6) were synthesized and characterized by different physico-chemical techniques including elemental and thermal analysis, magnetic susceptibility measurements, molar electric conductivity, IR, 1 H-NMR, 13 C-NMR, UV-Vis, mass spectroscopies and X-ray powder diffraction (XRD). The molecular structures of ligand HL 1 and two complexes (2 and 5) were confirmed by X-ray crystallography analysis on the monocrystal. In this complexes, the metal ions are in distorted square-planar environments. The copper (II) complex is mononuclear and crystallized in a monoclinic space group P21/c, whereas palladium (II) complex is dinuclear and crystallized in the trigonal crystal system R-3. The toxicity of the ligand and complexes was evaluated on both plant and animal cells, using the plant species Triticum aestivum L. and the crustacean Artemia franciscana Kellogg. At concentrations up to 100 μM the compounds presented very little toxicity on Artemia franciscana Kellogg. Moreover, the palladium (II) complex was devoid of any toxicity on the plant cells.

Co (II), Cu (II), Mn (II), Ni (II), Pd (II), and Pt (II) complexes of bidentate Schiff base ligand: Synthesis, crystal structure, and acute toxicity evaluation

“…The 13 C‐NMR spectra (DMSO, 125 MHz, δ, ppm): δ = 165.4; 164.5—specific for the C7 atom involved in the azomethine bond, 163.2; 145.6; 134.8; 132.4; 130.9; 129.0; 123.8; 123.7; 116.8; 112.9; 107.3; 100.8; and 55.6 ppm. [ 30 ]…”

Efficient MA-free perovskite solar cells with balanced carrier transport achieved using 4-trifluorophenylammonium iodide

“…23 The peaks at 1352 and 1622 cm À1 can be assigned to C-N and N-H bending, respectively. 36,37 Notably, two new peaks at 1492 and 1327 cm À1 are detectable for the TFPAI-treated sample in comparison with the control lm, which are, respectively, corresponding to the vibrational modes of aromatic C]C and -CF 3 of TFPAI, [38][39][40] indicative of the accommodation of TFPAI in the top perovskite lm.…”

Mixed ligand octahedral Zn(II) complex of N^N^O donor tridentate Schiff base ligand and N^N donor bidentate bipyridine ligand: Synthesis, characterization, biological activity and cytotoxicity

“…On comparing the activity of ligand with that of complex, it was found that the complex showed greater activity which can be explained on chelation theory after complexation biocidal properties will increase due to synergistic effect of metal ions. The metal‐chelate and complex toxicity would lead to increase the lipophilic nature of complexity 60,61 . Moreover because of their positive charge can be sharing with donor groups and delocalization of p‐electron over the system.…”

“…The metal-chelate and complex toxicity would lead to increase the lipophilic nature of complexity. 60,61 Moreover because of their positive charge can be sharing with donor groups and delocalization of p-electron over the system. Moreover the chelation may influence the polarity of metal atom.…”