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- W4384343863 endingPage "136181" @default.
- W4384343863 startingPage "136181" @default.
- W4384343863 abstract "“A new potentially hexadentate redox-active schiff base ligand, H2L = 2-((Z)-(2-(2-(2-((Z)-3,5-di-tert-butyl-2-hydroxybenzylideneamino)phenylthio)ethylthio)phenylimino)methyl)-4,6-di-tert-butylphenol, reacts with MII(O2CCCH3)2.4H2O [M = Ni, Pd] in CH3OH in the presence of air and Et3N affording isolation of red crystalline solids of composition [Ni(L)] (1) and [Pd2(L)Cl2].CH2Cl2 (2), respectively. When examined by cyclic voltammetry (CV), 1 exhibits three quasireversible responses at E1/2 = 0.60 V (peak-to peak separation, ΔEp = 80 mV), 0.96 V (ΔEp = 80 mV) and 1.16 V (ΔEp = 160 mV) vs SCE (saturated calomel electrode); while 2 exhibits one quasireversible response at E1/2 = 1.185 V (peak-to peak separation, ΔEp = 130 mV). One electron oxidized species showed EPR spectrum correspond to ferromagnetically coupled system, S = 3/2 (S = 1 for NiII and S = ½ for phenoxyl radical). Structural analysis revealed that 1 is discrete mononuclear and 2 is discrete dinuclear coordination complex. In complex 1, each NiII is in distorted octahedral NiN2O2S2 environment where coordination is satisfied by two nitrogen atoms, two oxygen atoms and two sulfur atoms of the ligand, and and one nitrogen atom from cyanide. In complex 2, each Pd is in distorted square planner PdNOSCl environment where coordination is satisfied by one each nitrogen, oxygen and sulfur atoms of the ligand, and a chlorine atom from chloride group. DFT calculations at B3LYP-level of theory adequately describe the electronic structures of 1 and 2, containing a spin-unpaired d8 NiII ion and spin-paired d8 PdII ion. Time-dependent-DFT calculations on 1 and 2 shed light on the origin of UV−vis−NIR spectral absorptions." @default.
- W4384343863 created "2023-07-15" @default.
- W4384343863 creator A5002267789 @default.
- W4384343863 creator A5051250982 @default.
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- W4384343863 creator A5070519195 @default.
- W4384343863 creator A5078857845 @default.
- W4384343863 creator A5067191089 @default.
- W4384343863 date "2023-12-01" @default.
- W4384343863 modified "2023-09-27" @default.
- W4384343863 title "Mononuclear nickel(II) and dinuclear palladium(II) complexes of a redox-active iminophenolate-based O,O,N,N,S,S ligand – experimental and theoretical vision" @default.
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