Dual-site aqua mononuclear nickel(II) complexes of non-heme tetradentate ligands: Synthesis, characterization and reactivity

Four quinoline based non‐heme tetradendate ligands viz. N,N′‐di(quinolin‐8‐yl)ethane‐1,2‐diamine (BQENH2) 1, N,N′‐di(quinolin‐8‐yl)propane‐1,3‐diamine 2 (BQPNH2), N,N′‐di(quinolin‐8‐yl)butane‐1,4‐diamine (BQEBNH2) 3 and N,N′‐di(quinolin‐8‐yl)hexane‐1,6‐diamine (BQEHNH2) 4 are structurally characterized and used in selective detection of 2,4,6‐trinitrophenol (TNP) with high quenching constants. The plausible reaction mechanism involves ground state protonation of quinoline nitrogen atoms in compounds 1–4 by TNP with formation of picrate adducts (1 a‐4 a). The protonation of 1–4 is confirmed by infrared, 1H‐NMR spectroscopies, powder XRD and the single crystal structure analysis of 1 a and 4 a. Crystal structures further infer that after protonation, 1 a and 4 a are stabilized by intramolecular hydrogen bonding.

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Chemoselective Detection of 2,4,6‐trinitrophenol by Ground State Adduct Formation via Protonation of Quinoline Moiety of Non‐heme Ligands with Structural Evidence

Harmalkar

Naik

Nilajakar

et al. 2020

ChemistrySelect

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Efficient and selective oxidation of tertiary benzylic C H bonds with O2 catalyzed by metalloporphyrins under mild and solvent-free conditions

Shen

Liu

et al. 2020

Applied Catalysis A: General

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Synthesis, characterization and antimicrobial properties of mononuclear copper(II) compounds of N,N′-di(quinolin-8-yl)cyclohexane-1,2-diamine

Harmalkar

Butcher

Gobre

et al. 2019

Inorganica Chimica Acta

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Dual-site aqua mononuclear nickel(II) complexes of non-heme tetradentate ligands: Synthesis, characterization and reactivity

Cited by 3 publications

References 73 publications

Chemoselective Detection of 2,4,6‐trinitrophenol by Ground State Adduct Formation via Protonation of Quinoline Moiety of Non‐heme Ligands with Structural Evidence

Chemoselective Detection of 2,4,6‐trinitrophenol by Ground State Adduct Formation via Protonation of Quinoline Moiety of Non‐heme Ligands with Structural Evidence

Efficient and selective oxidation of tertiary benzylic C H bonds with O2 catalyzed by metalloporphyrins under mild and solvent-free conditions

Synthesis, characterization and antimicrobial properties of mononuclear copper(II) compounds of N,N′-di(quinolin-8-yl)cyclohexane-1,2-diamine

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