Metal ions in a composition of the polymer compounds can serve as model objects of biological systems and show a number of important biological functions. Particular practical interest are represent polymeric materials containing stabilized metal ions such as silver; copper; iron; cobalt; nickel and magnesium. It is known that the guanidine-containing polymers have intrinsic antibacterial properties. Therefore; the combination of properties polyguanidines (biological activity; bactericidal and hydrodynamic properties) and metal ions (optical; biological; thermal; electrical properties) causes the forward-received new features based on these polymeric metal complexes. By IR spectroscopy and X-ray diffraction the structure of resulting polymer complex compound was studied. Infrared spectral studies have shown that the addition of magnesium ions to the structure of the polyacrylate guanidine leads to significant changes in their IR spectra. It was found that the Mg2+ ions actively interact with the oxygen atom of a carboxylate ion; and the nitrogen atom of the amino group of guanidine polyacrylate forms a new coordination compound. X-ray data showed that the initial polymer polyacrylate guanidine has diffraction pattern of the crystalline substance. The complex polymer of polyacrylate guanidine/Mg2+ has a more amorphous structure; as indicated by characteristic broad lines (halo) on the X-ray pattern. It was found that the obtained complex compound of polyacrylate guanidine/Mg2+ does not preserve the original features of the polymer. This is possible due to the fact that magnesium ions penetrating into the polymer matrix partially destroy it and form a new complex compound.Forcitation:Isupova Z.Yu.; Elcheparova S.A.; Zhansitov A.A.; Khashirova S.Yu.; Ligidov M.Kh.; Pakhomov S.I. Investigation of complex compounds of guanidine acrylate with magnesium ions. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 5. P. 63-67

No abstract

It was shown for the first time that guanidine acrylate and methacrylate can act as ionic liquids for direct dissolution of cellulose (the solubility of dialdehyde cellulose is 27 % at the temperature of 60 °C). The conditions for the use of new ionic liquids as a dialdehyde cellulose solvent are found out: the temperature (60 °C), concentration of aqueous solution of acrylate (methacrylate) guanidine (1 mol/L).

It was of interest to search for luminescent reactions to terbium in complexes with sulfosalicylic acid derivatives and to strengthen them by studying the influence of the third components (aminopolycarboxylic acids, organic bases, and surfactants). Absorption spectra of solutions of rare earth element complexes in the wavelength range of 220-880 nm were recorded using the SF-26 spectrophotometer. To obtain the maximum luminescence of the luminescent reaction of rare earth elements in complexes with organic reagents, a number of factors that have a significant impact on the intensity of solutions of luminescent complexes have been studied. Such factors are the pH of the complexes, concentration of reagent, time of maturation complexes, the irradiation time, the order of adding the reagents and the ionic strength of the solutions. According to studies conducted, surfactants increase the luminosity of terbium ions in complexes with sulfosalicylic acid derivatives. As a surfactant, decylpyridinium chloride was used in solutions. The existence of a bright luminescent green reaction of terbium in a complex with methyl ester S- (4-bromanilide) sulfosalicylic acid was established. The optimal conditions for the complexation of terbium were selected and highly sensitive luminescent methods for determining terbium in various objects were developed. Terbium is converted into a luminescent complex compound with an organic reagent S- (4-bromanililide) sulfosalicylic acid methyl ester in the presence of a cationic surfactant decylpyridinium chloride in a ratio of 1: 2: 13, pH 7.9 ± 0.08. The resulting complex compound of terbium upon irradiation with a mercury lamp under ultraviolet light gives intense green luminescence that is stable during standing and irradiation. As a consequence, the proposed method allows to determine terbium in the oxides of rare earth elements, which are quenchers of luminescence with a sensitivity of 10-8%, bypassing the extraction stage. The sensitivity of the determination of terbium in the oxides of the remaining lanthanides is 2.4·10-10%.