Synthesis and XRD of Novel Ni4(µ3-O)4 Twist Cubane Cluster Using Three NNO Mixed Ligands: Hirshfeld, Spectral, Thermal and Oxidation Properties
- نوع المنشور
- بحث أصيل
- المؤلفون
Abstract
A novel [Ni4(µ3-O)4] twisted cubane complex, Ni4Cl2(NN)2(ONN)2(NNO)2(H2O)2·2THF, was prepared from a crude mixture of three bidentate ligands. A mixture of ethyl 1-(hydroxymethyl)-3-methyl-1H-pyrazole-5-carboxylate (HONN) and ethyl 1-(hydroxyl-methyl)-5-methyl-1H-pyrazole-3-carboxylate (NNOH) were added to ethyl 3-methyl-1H-pyrazole-5-carboxylate (NNH) then mixed to NiCl2·6H2O solution under ambient conditions. Reaction progress was monitored via infrared and ultraviolet–visible spectroscopies and energy-dispersive X-ray spectroscopy was used to analyze the product. Reaction yields for cluster synthesis were very good. Single crystal structure determination for the cluster indicates a novel [Ni4(µ3-O)4] twisted cubane structure with octahedral geometry around each of the Ni(II) centers in Ni4Cl2(NN)2(ONN)2(NNO)2(H2O)2·2THF. The lattice is stabilized by hydrogen bonding and H–� stacking. Hirshfeld surface analysis (HSA) corroborates the single crystal structure determination results. The cluster displays significant thermal stability under open atmosphere conditions; it decomposes in three steps at high temperature. The cluster demonstrates promising results as a catalyst; it promoted the complete oxidation of catechol to o-Quinone in under mild conditions.
- العنوان
- Ismail Warad
- الناشر
- Ismail Warad
- بلد الناشر
- فلسطين
- نوع المنشور
- مطبوع فقط
- المجلد
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- السنة
- --
- الصفحات
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