The synthesis, composition, and catalytic properties of a new family of hexanuclear Cu(II)-based phenylsilsesquioxanes are described here. Structural studies of 17 synthesized compounds revealed the general principle underlying their molecular topology: viz., a central metal oxide layer consisting of two Cu trimers is coordinated by two cyclic [PhSiO] siloxanolate ligands to form a skewed sandwich architecture with the composition [(PhSiO)(CuO)]. In addition to this O ligation by the siloxanolate rings, two opposite copper ions are additionally coordinated by the nitrogen atoms of corresponding N ligand(s), such as 2,2'-bipyridine (compounds 1-9), 1,10-phenanthroline (compounds 10-13), mixed 1,10-phenanthroline/2,2'-bipyridine (compound 14), or bathophenanthroline (compounds 15-17). Finally, the charge balance is maintained by two HO (compounds 1-7, 10-13, and 15-17), two HCO (compound 8), or two CHCOO (compounds 9 and 14) anions. Complexes 1 and 10 exhibited a high activity in the oxidative amidation oxidation of alcohols. Compounds 1, 10, and 15 are very efficient homogeneous catalysts in the oxidation of alkanes and alcohols with peroxides.

As part of the research, the authors proposed a recipe and production technology for a line of biodegradable materials based on low density polyethylene with different content of natural rubber. The advantages of using such materials include their high operational physical and mechanical properties, which make it possible to create a wide range of various products from these materials, as well as their high biodegradability in soil. So for the composition PE/NR‐50/50, the weight loss in the soil within 18 months was more than 40%. In addition, using the example of the composition PE/NR‐50/50, the authors carried out calculations of the efficiency of organizing the production of material according to the developed recipe, which showed a high investment attractiveness of the implementation of such a project.

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