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• W4313481567 abstract "Abstract A series of novel formazan analogs 4 a – e , having MeO, Me, Cl, NO 2 at para / meta ‐position in 1‐phenyl ring was synthesized by treatment of 9‐fluorenone hydrazone 2 with a series of the hydrazonoyl chlorides 3 a – e . The molecular structure elucidation of all newly synthesized formazans was achieved by using elemental analyses as well as spectroscopic tools. The substituent and solvatochromic effects of formazan derivatives in seventeen solvents with different chemical and physical properties were investigated by absorption spectroscopy. A small band shift is obtained in the absorption maxima as a function of solvent, displaying a less sensitivity of compounds 4 a – e to solvent polarity. A noticeable variation in the absorption maxima (λ max ) values was observed by modifying the electronic characteristic and positions of the substituents. Furthermore, the electrochemical properties were adressed by cyclic voltammetry measurements, and the influence of electron‐donating and withdrawing nature of the substituents on electrochemical properties of formazan derivatives has been studied. In addition, computational studies on the formazan structures were performed using B3LYP functional in DFT method at the 6‐31G(d,p) basis set, and the energy values related to their frontier orbitals (HOMO,LUMO) were estimated. A variety of reactivity descriptors, namely, ionization potential (IP), electron affinity (EA), hardness ( η ), softness ( S ), chemical potential ( μ ), electronegativity ( χ ) and electrophilicity index ( ω ) have been determined via energies values of HOMO and LUMO. The experimental data and theoretical results showed a good correlation." @default.
• W4313481567 created "2023-01-06" @default.
• W4313481567 creator A5024971078 @default.
• W4313481567 date "2023-01-02" @default.
• W4313481567 modified "2023-10-16" @default.
• W4313481567 title "Synthesis, Optical and Electrochemical Properties of Novel Formazan Analogs Incorporated Fluorene Moiety" @default.
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• W4313481567 doi "https://doi.org/10.1002/slct.202203963" @default.
• W4313481567 hasPublicationYear "2023" @default.
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