Nickel(II) salicylaldiminates: Re-visiting a classic

Saechio, Supaporn; Clérac, Rodolphe; Murray, Keith S.; Phonsri, Wasinee; Ruiz, Eliseo; Harding, Phimphaka; Harding, David J.

doi:10.1016/j.poly.2021.115321

Cited by 2 publications

(2 citation statements)

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“…In this structure, the octahedral coordination environment exists around each of the three nickel atoms. This environment for the terminal cations is identical with three N(azomethine) and three O(phenol) atoms (N1, N2, N3, O1, O2 and O3), as expected for the coordination with the salicylaldimine Schiff bases [70]. However, only the same oxygen atoms that bind the terminal cations connect with the central nickel atom to build its coordination sphere.…”

Section: X-ray Diffraction Analysissupporting

confidence: 60%

“…Generally, the complex is trinuclear with three almost linear nickel atoms (Ni1-Ni2-Ni1 i = 179.54°). Indeed, the mononuclear Ni(II)-salicylaldimines are more predominant in the literature, but three isostructural trinuclear nickel complexes, with ligands derived from salicylaldeyde and 1-bromoaniline, 1-methylaniline and 1-methoxy aniline, displaying Ni1-Ni2-Ni1 i angles = 178.71-179.72°, were recently reported [70]. Spectroscopic (FT-IR and ultraviolet-visible light) measurements were performed for the complex and its ligand to elucidate the functional groups, as well as the assignments for the electronic transitions in these compounds.…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

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A Novel Trinuclear Nickel(II) Salicylaldimine Complex: Synthesis, Structural Characterization, Bioactivity Profile against Bacterial, Fungal and Breast Cancer Cells and Effects on Wheat Germination Indices

Williem,

Amro,

Ibrahim

et al. 2023

Crystals

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The complex [Ni3L6]•1.56CH2Cl2 (HL = (E)-2-(((3,4-dimethylphenyl)imino)methyl)phenol) was isolated in the monoclinic C 2/c space group. All nickel atoms are six-coordinate with a nickel atom bound to only O-phenol atoms, while the two terminal cations are surrounded by N3O3 atoms. This complex and its ligand (20 mg/mL in DMSO) were tested as antimicrobials. Against two fungi, the complex and amphotericin B caused 13 and 21 mm inhibition diameters, respectively, in Candida albicans plates. Against four bacteria, the ligand inhibited only Staphylococcus aureus with a 10 mm diameter, and the complex induced inhibitions with 10–13 mm (ampicillin afforded 21–26 mm inhibitions). Against cancer (MCF-7) and normal (BHK) cells, the ligand provided virtual inactivity, but great activities (IC50 = 5.44 and 11.61 μM, respectively) were shown by the complex. Doxorubicin afforded activities with IC50 = 9.66 and 36.42 μM in these cells, respectively. The ligand and its complex offered 100% germination of a drought-sensitive wheat cultivar (90% for control), but, under drought, the complex, ligand and control gave germination with 85, 75 and 95%, respectively. Under normal irrigation and drought, the control and complex afforded 100% germination, and the ligand afforded 95% germination for a drought-resistive wheat cultivar.

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Section: X-ray Diffraction Analysissupporting

confidence: 60%

Section: X-ray Diffraction Analysismentioning

confidence: 99%