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Ultrasonic Clusterization Process to Prepare [(NNCO)CoCl] As a Novel Double-Open-CoO Cubane Cluster: SXRD Interactions, DFT, Physicochemical, Thermal Behaviors, and Biomimicking of Catecholase Activity

Overview
Journal ACS Omega
Specialty Chemistry
Date 2022 Sep 26
PMID 36157745
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Abstract

A novel double-open-cubane (NNCO)CoCl cluster with a CoO core was made available under aqua-ultrasonic open atmosphere conditions for the first time. The ultrasonic clusterization of the (3,5-dimethyl-1-pyrazol-1-yl)methanol (NNCOH) ligand with CoCl·6HO salts in ethanol yielded a high-purity and high-yield cluster product. Energy-dispersive X-ray (EDX), Fourier transform infrared (FT-IR), and ultraviolet (UV)-visible techniques were used to elucidate the clusterization process. The double-open-CoO cubane structure of the (NNCO)CoCl cluster was solved by synchrotron single-crystal X-ray diffraction (SXRD) and supported by density functional theory (DFT) optimization and thermogravimetric/differential TG (TG/DTG) measurements; moreover, the DFT structural parameters correlated with the ones determined by SXRD. Molecular electrostatic potential (MEP), Mulliken atomic charge/natural population analysis (MAC/NPA), highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO), density of states (DOS), and GRD quantum analyses were computed at the DFT/B3LYP/6-311G(d,p) theory level. The thermal behavior of the cluster was characterized to support the formation of the CoO core as a stable final product. The catalytic property of the (NNCO)CoCl cluster was predestined for the oxidation process of 3,5-DTBC diol (3,5-di--butylbenzene-1,2-diol) to 3,5-DTBQ dione (3,5-di--butylcyclohexa-3,5-diene-1,2-dione).

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