Knotted chains are a promising class of polymers with many applications for materials science and drug delivery. Here we introduce an experimentally realizable model for the design of chains with controllable topological properties. Recently, we have developed a systematic methodology to construct self-assembling chains of simple particles, with final structures fully controlled by the sequence...

The recent studies on sustainable plasticizer mainly focus raw material source, synthesis method and plasticization, but the effect of chemical functional groups (epoxy group ester group) compatibility thermal stability plasticized polyvinyl chlorid (PVC) materials has been ignored. In this study, two kinds plasticizers (eleostearic acid eugenol (EAEE) epoxidized EAEE) were synthesized to plast...

In the title compound, C9H10N4OS, the dihedral angle between the benzene and 1H-1,2,4-triazole-5(4H)-thione rings is 67.51 (16)°. In the crystal, mol-ecules are liked via N-H⋯O hydrogen bonds, forming chains along the c-axis direction. The chains are linked via O-H⋯S hydrogen bonds, forming corrugated layers lying parallel to the bc plane. The layers are linked via N-H⋯N and N-H⋯S hydrogen bond...

The title compound, C9H9NO, crystallized with two independent mol-ecules (A and B) in the asymmetric unit. The conformation of the two mol-ecules differs slightly with the phenyl ring in mol-ecule A, forming a dihedral angle of 15.38 (12)° with the oxime group (O-N=C), compared to the corresponding angle of 26.29 (11)° in mol-ecule B. In the crystal, the A and B mol-ecules are linked head-to-he...

In the title compound, C16H12ClFO2S, the dihedral angle between the mean planes of the benzo-furan and 2-fluoro-phenyl rings is 34.85 (6)°. In the crystal, mol-ecules are linked via pairs of C-H⋯O hydrogen bonds, forming zigzag chains along [001]. The chains are linked by C-H⋯π inter-actions, forming a three-dimensional structure.

In the title compound, C18H14N2O, the dihedral angle between the methyl-phenyl ring and the phthalazone ring system (r.m.s. deviation = 0.034 Å) is 53.93 (9)°. In the crystal, mol-ecules are connected by C-H⋯O hydrogen bonds, forming chains along [101]. The chains are linked by π-π inter-actions [centroid-centroid distance 3.6990 (12) Å], forming layers parallel to (10-1).