Synthesis and Properties of Copper Trimesinate Complexes with Polypyridine Ligands
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hesis and Properties of Copper Trimesinate Complexes with Polypyridine Ligands I. E. Uflyanda, V. A. Zhinzhiloa,*, G. I. Dzhardimalievab, E. I. Knerelmanb, G. I. Davydovab, and I. G. Shuninab a
b
Southern Federal University, Rostov-on-Don, 344090 Russia Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Chernogolovka, 142432 Russia *e-mail: [email protected]; [email protected] Received May 18, 2020; revised June 18, 2020; accepted June 29, 2020
Abstract—Copper trimesinate complexes Cu3(BTC)2L3 and Cu3(BTC)2L with polypyridine ligands, such as 2,2′-bipyridyl, 1,10-phenanthroline, and 4′-phenylterpyridine, were synthesized. Properties and adsorption capacity of compounds obtained in relation to aqueous solutions of pollutants were investigated. Keywords: polypyridine ligands, sorption, organometallic framework structures
DOI: 10.1134/S1070363220100114 Since the discovery of important properties of aluminosilicate zeolites and their application to ion exchange, separation, and catalysis [1], the study of porous materials has become a priority for chemists, physicists, and nanotechnologists. Over the years, the number of new synthetic porous solids has increased significantly. The most significant breakthrough came in 1982, when Flanigen and his colleagues reported the synthesis of the first analogue of zeolites, microporous alumophosphate [2]. This zeolite-like compound stimulated the discovery of entire families of new inorganic porous materials [3], most of which are oxygencontaining inorganic materials. In addition to aluminum phosphates, many compounds have been synthesized with other metals, in particular, gallium [4], tin [5], vanadium [5], and indium [6]. Somewhat later, it was reported that new oxygen-containing porous materials based on phosphites, selenites [8], and germanates [9] were obtained. Along with the development of purely inorganic porous materials, in the early 1990s organic molecules began to be used as structures that combine metal atoms. Such polytope organic ligands, usually nitrogen- or oxygen-donor ligands, connect inorganic particles into frameworks, spatially orienting them to the topologies appropriate for the formation of pores or cavities in the volume of the structure itself. These new porous materials can be grouped into different classes: hybrid materials (1-, 2-, 3D), coordination polymers (0D), and organic materials [10].
The most interesting are research works in the field of so-called metalorganic framework structures (MOF), in which organic linker molecules combine secondary structural units—metal ions or clusters. The unique combination of organic and inorganic structural elements makes it possible to obtain materials with important properties: to combine high structural strength and a significant pore volume (50% and more of the total volume), to vary the size of the obtained pores, and to change the density (to increase the pore diameter up to 9.8 nm [11] and reduce the density to 0.126 g/cm3 [12]), to obtain substances with a highly developed in
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