Synthesis and structural characterization of a dinuclear copper(II) complex with a (N,S) donor ligand: Catecholase and phenoxazinone synthase activities

Mondal, D.; Ghosh, Ayon Kanti; Chatterjee, Arnab K.; Ghosh, Rajarshi

doi:10.1016/j.ica.2018.11.046

Cited by 16 publications

(1 citation statement)

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“…In terms of reports, PHS activity has not been thoroughly investigated in the last decades despite catechol oxidation receiving lots of interest. 10–38 The emergence of model complexes ensured a steady increase in the number of articles although contribution towards the structure–activity relationship has not been explored much.…”

Section: Introductionmentioning

confidence: 99%

Tailored design, synthesis, and catalytic aspects of mononuclear cis-dichloro copper(ii) complexes with simple DPA-derived tridentate ligands and their biomimicking activities

Muley,

Karumban,

Kumbhakar

et al. 2024

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

Tailored design, synthesis, and catalytic aspects of mononuclear cis-dichloro copper(ii) complexes with simple DPA-derived tridentate ligands and their biomimicking activities

Muley,

Karumban,

Kumbhakar

et al. 2024

New J. Chem.

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Modulation of Nuclearity in Cu^II−Mn^II Complexes of a N₂O₂ Donor Ligand Depending upon Carboxylate Anions: Structures, Magnetic Properties and Catalytic Oxidase Activities

Ganguly

Mayans

Ghosh

2020

Chemistry An Asian Journal

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Three new hetero-metallic copper(II)-manganese(II) complexes, [(CuL) 2 Mn 3 (C 6 H 5 CO 2) 6 ] (1), [(CuL) 2 Mn(CH 3 CO 2) 2 ] (2), and {[(CuL) 2 Mn(C 6 H 5 CH 2 CO 2) 2 ] • 2CH 3 CN} (3), have been synthesized using [CuL] as ''metalloligand'' (where H 2 L=N,N'-bis (2-hydroxynaphthyl-methylidene)-1,3-propanediamine). Single-crystal structural analyses show an almost linear pentanuclear structure for complex 1 where a square planar [CuL] unit is connected to each of the two terminal Mn II ions of a linear, centrosymmetric [Mn 3 (benzoate) 6 ] unit through the double phenoxido bridges. Both complexes 2 and 3 possess a linear tri-nuclear structure where two terminal squarepyramidal [CuL] units are bonded to the central Mn II ion through double phenoxido oxygen atoms along with a synsyn bridging acetate (for 2)/phenyl acetate (for 3). All three complexes exhibit catecholase, and phenoxazinone synthaselike activities under aerial conditions. For catecholase like activity, the turnover numbers (k cat) are 595, 40, and 205 h À 1 whereas, for phenoxazinone synthase like activity, the turnover numbers are 25, 4, and 11 h À 1 for complexes 1-3, respectively. The mechanism of both catalytic oxidase activities is proposed on the basis of mass spectral evidences. Variable-temperature (2-300 K) dc molar magnetic susceptibility measurements of 1 reveal antiferromagnetic interactions between the CuÀ Mn centres (J 1 = À 29.3 cm À 1), and also between the MnÀ Mn centres of the [Mn 3 (benzoate) 6 ] unit (J 2 = À 0.68 cm À 1). On increasing the magnetic field at 2 K, its ground spin state changes from S = 3/2 to S = 5/2 at 4 T, attributable to the low value of J 2 which makes the excited spin states close in energy with the ground spin state. Complexes 2 and 3 show antiferromagnetic coupling interactions between the CuÀ Mn pairs with J values of À 9.51, and À 5.32 cm À 1 , respectively.

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Catecholase-like activity in 2D MOFs: Oxidation of 3,5-DTBC by two Cu(II) 2D MOFs of reduced Schiff base ligands

Thio

Vittal

2021

Inorganica Chimica Acta

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Synthesis and structural characterization of a dinuclear copper(II) complex with a (N,S) donor ligand: Catecholase and phenoxazinone synthase activities

Cited by 16 publications

References 37 publications

Tailored design, synthesis, and catalytic aspects of mononuclear cis-dichloro copper(ii) complexes with simple DPA-derived tridentate ligands and their biomimicking activities

Tailored design, synthesis, and catalytic aspects of mononuclear cis-dichloro copper(ii) complexes with simple DPA-derived tridentate ligands and their biomimicking activities

Modulation of Nuclearity in Cu^II−Mn^II Complexes of a N₂O₂ Donor Ligand Depending upon Carboxylate Anions: Structures, Magnetic Properties and Catalytic Oxidase Activities

Catecholase-like activity in 2D MOFs: Oxidation of 3,5-DTBC by two Cu(II) 2D MOFs of reduced Schiff base ligands

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Synthesis and structural characterization of a dinuclear copper(II) complex with a (N,S) donor ligand: Catecholase and phenoxazinone synthase activities

Cited by 16 publications

References 37 publications

Tailored design, synthesis, and catalytic aspects of mononuclear cis-dichloro copper(ii) complexes with simple DPA-derived tridentate ligands and their biomimicking activities

Tailored design, synthesis, and catalytic aspects of mononuclear cis-dichloro copper(ii) complexes with simple DPA-derived tridentate ligands and their biomimicking activities

Modulation of Nuclearity in CuII−MnII Complexes of a N2O2 Donor Ligand Depending upon Carboxylate Anions: Structures, Magnetic Properties and Catalytic Oxidase Activities

Catecholase-like activity in 2D MOFs: Oxidation of 3,5-DTBC by two Cu(II) 2D MOFs of reduced Schiff base ligands

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Modulation of Nuclearity in Cu^II−Mn^II Complexes of a N₂O₂ Donor Ligand Depending upon Carboxylate Anions: Structures, Magnetic Properties and Catalytic Oxidase Activities