A new zinc-based two-dimensional coordination polymer, [Zn(5-AIP)(Ald-4)]·H2O (5-AIP = 5-amino isophthalate, Ald-4 = aldrithiol-4), 1, has been synthesized at room temperature by layer diffusion technique. Single-crystal X-ray diffraction analysis of...
A novel Cu(II) inorganic co‐crystal (CuICC) i. e. {[Cu(IMA)(2,2′‐bipyridine)(H2O)]2 ⋅ [Cu2(IMA)2(2,2′‐bipyridine)2] ⋅ 6H2O} [where IMA=isopropylmalonic acid] has been synthesized. The inorganic co‐crystal of Cu(II) has been exploited as the versatile efficient catalyst for the cost effective facile synthetic approaches towards ‘click’ reaction which is effective for the several marked organic syntheses of 1,2,3‐triazoles and β‐hydroxy‐1,2,3‐triazoles. The catalytic process was performed through the single pot reaction based aerial synthetic protocol that does not need to perform any chromatographic purification technique. Interestingly, the CuICC acts as heterogeneous catalyst for the synthesis of 1,2,3‐triazoles, whereas its homogeneous catalytic role has been found for the synthesis of β‐hydroxy‐1,2,3‐triazoles.
Here, we report the fabrication of the unique intertwined Ni9S8/Ag2S composite structure with hexagonal shape from their molecular precursors by one‐pot thermal decomposition. Various spectroscopic and microscopic techniques were utilized to confirm the Ni9S8/Ag2S intertwined structure. Powder X‐ray Powder Diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS) analysis suggest that there is an enrichment of Ni9S8 phase in Ni9S8/Ag2S. The presence of Ag2S in Ni9S8/Ag2S improves the conductivity by reducing the interfacial energy and charge transfer resistance. When Ni9S8/Ag2S is employed as an electrocatalyst for electrochemical oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activity, it requires a low overpotential of 152 mV for HER and 277 mV for OER to obtain the geometrical current density of 10 mA cm−2, which is definitely superior to that of its components Ni9S8 and Ag2S. This work provides a simple design route to develop an efficient and durable electrocatalyst with outstanding OER and HER performance and the present catalyst (Ni9S8/Ag2S) deserves as a potential candidate in the field of energy conversion systems.
A Co(ii)-based metal–organic compound exhibits luminescence turn-on by Al3+ and quenching by Fe3+ due to the formation of charge-transfer complexes/adducts.
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