Synthesis of novel Cl2Co4L6 clusterusing 1-hydroxymethyl-3,5-dimethylpyrazole (LH) ligand: Crystal structure, spectral, thermal, Hirschfeld surface analysis and catalytic oxidation evaluation

The clusterization reaction of Co(II) with simple (LH) ligand (1-hydroxymethyl-3,5-dimethylpyrazole) leads to an interesting Cl2Co4L6 cluster formation in a good yield. Crystal state XRD-study resulting the formation of an open – cubane – type cluster with two types of Co(II)4 centers. The XRD conve...

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Veröffentlicht in:Journal of molecular structure 2020-01, Vol.1199, p.126995, Article 126995
Hauptverfasser: Titi, Abderrahim, Shiga, Takuya, Oshio, Hiroki, Touzani, Rachid, Hammouti, Belkheir, Mouslim, Messali, Warad, Ismail
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Sprache:eng
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Zusammenfassung:The clusterization reaction of Co(II) with simple (LH) ligand (1-hydroxymethyl-3,5-dimethylpyrazole) leads to an interesting Cl2Co4L6 cluster formation in a good yield. Crystal state XRD-study resulting the formation of an open – cubane – type cluster with two types of Co(II)4 centers. The XRD converted the formation of both octahedral and trigonal bipyramidal geometries around the 4 Co(II) centers of Cl2Co4L6 in the solid state. The clusterization reaction between Co(II) and LH was monitored by FT-IR and supported by TG/DTG. Hirschfeld surface analysis for the desired cluster was performed then compared to the XRD-packing result. The Cl2Co4L6 cluster showed a significant catalytic effect on the catechol oxidation process at RT. [Display omitted] •New open cubane cluster based on Co and pyrazole synthesized.•XDR, IR, Hirschfeld Surface and thermal characterization.•Catecholase oxidation evaluation.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2019.126995