Novel Highly Efficient Antibacterial Chitosan-Based Films.

In this study, we elaborated new chitosan-based films reinforced by iron(III)-containing chitosan nanoparticles Fe(III)-CS-NPs at different concentrations. We found that the optimum concentration of Fe(III)-CS-NPs for the improvement of antibacterial and mechanical properties of the films was 10% (σ = ca. 8.

Crystal structure and Hirshfeld surface analysis of methyl 4'-amino-3',5'-di-cyano-2,2''-dioxodi-spiro[indoline-3,1'-cyclo-pentane-2',3''-indolin]-3'-ene-5'-carboximidate with an unknown solvent.

In the title compound, CHNO, the central five-membered cyclo-pentene ring adopts an envelope conformation while the five-membered spiro 2,3-di-hydro-1-pyrrole rings exhibit twisted envelope and envelope conformations. One of the 1,3-di-hydro-2-indol-2-one units is in an axial position and the other is in a bis-ectional position. The methyl methanimidate unit is in an equatorial position.

Crystal structure and Hirshfeld surface analysis of 4-bromo-2-[3-methyl-5-(2,4,6-tri-methyl-benz-yl)oxazolidin-2-yl]phenol.

The title compound, CHBrNO, is chiral at the carbon atoms on either side of the oxygen atom of the oxazolidine ring and crystallizes as a racemate. The 1,3-oxazolidine ring adopts an envelope conformation with the N atom in an position. The mean plane of the oxazolidine ring makes dihedral angles of 77.