The title compound, C(10)H(5)NO(5), features an intra-molecular O-H⋯O hydrogen bond, forming a six-membered ring with an S(6) ring motif. The nitro group makes a dihedral angle of 71.66 (5)° with the plane of the benzene ring to which it is bound. The two rings are almost coplanar, with a dihedral angle of 4.44 (5)°. Short inter-molecular distances between the centroids of the six-membered rings [3.7188 (6)-3.8299 (6) Å] indicate the existence of π-π inter-actions. The inter-esting features of the crystal structure are the short inter-molecular O⋯O and O⋯N inter-actions. The crystal packing is stabilized by intra-molecular O-H⋯O and inter-molecular C-H⋯O (×3) hydrogen bonds, and C-H⋯π inter-actions.
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http://dx.doi.org/10.1107/S1600536808021594 | DOI Listing |
Chemistry
January 2025
university of science and technology of china, School of Nuclear Science and Technology, China, 230029, HEFEI, CHINA.
The final outcomes of supramolecular assembly are determined by the pathways and the formation of intermediates during the assembly process. We studied pathway complexity involving two consecutive pathways in supramolecular polymerization of naphthalene-diimide (NDI) derivative molecule. Depending on preparation methods anisotropic aggregates of J-type nanorods (Agg I) or more flexible H-type nanofibers (Agg II) are obtained from the identical initial state in solution of methyl cyclohexane (MCH) or MCH/CHCl3 mixtures.
View Article and Find Full Text PDFJ Chem Phys
January 2025
Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
Two-dimensional (2D) vibrational spectroscopy is a powerful means of investigating the structure and dynamics of complex molecules in condensed phases. However, even in theory, analysis of 2D spectra resulting from complex inter- and intra-molecular motions using only molecular dynamics methods is not easy. This is because molecular motions comprise complex multiple modes and peaks broaden and overlap owing to various relaxation processes and inhomogeneous broadening.
View Article and Find Full Text PDFChemistry
January 2025
Indian Institute of Technology Madras, Department of Chemistry, Chennai, Chennai, INDIA.
A series of significantly bulky mono- and di-substituted cyclic alkyl-amino carbene (cAAC)- functionalized cyclopentadiene ring (Cp) compounds were synthesized. The functionalization of the Cp ring with cAAC ligands makes them significantly bulkier, while retaining their ligation properties. These compounds display interesting fluorescence properties.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering, Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, Department of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China. Electronic address:
The intricate multi-level microstructure of starch, formed through extensive inter- and intra-molecular hydrogen bonds, significantly influences the processability and performance of starch-based products. Consequently, the ability to effectively manipulate the multi-level microstructure holds substantial implications for the development of biomass products. This study introduces a novel approach utilizing high-frequency electric field (HFE) to produce a transparent and robust starch product.
View Article and Find Full Text PDFAdv Colloid Interface Sci
January 2025
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada. Electronic address:
Biopolymers derived from natural resources are highly abundant, biodegradable, and biocompatible, making them promising candidates to replace non-renewable fossil fuels and mitigate environmental and health impacts. Nano-fibrous biopolymers possessing advantages of biopolymers entangle with each other through inter-/intra-molecular interactions, serving as ideal building blocks for gel construction. These biopolymer nanofibers often synergize with other nano-building blocks to enhance gels with desirable functions and eco-friendliness across various applications in biomedical, environmental, and energy sectors.
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