The title compounds, CHNOS (), CHNOS (), and CHNOS (), form a homologous series in which the size of the saturated ring increases from six- to eight-membered (with four, five and six methyl-ene groups respectively). For and , the central (CH) moieties are all displaced to the same side of their ring, and the CH-CH-CH angles are much wider than the standard value; a database search indicates that these are general features of such ring systems. For , the thio-phene ring lies with the sulfur atom on the opposite side of the C-C bond to the cyano group, in contrast to and . For each compound, the packing may be described in terms of two 'weak' C-H⋯N hydrogen bonds, which link the mol-ecules to form one-dimensional (, ) or three-dimensional () assemblies.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10088300 | PMC |
| http://dx.doi.org/10.1107/S2056989023001883 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
UHPLC-Q-Orbitrap metabolomics of Syrah red wines during bottle ageing: Molecular markers of evolution and cork permeability.
Food Chem
February 2025
SPO, Univ Montpellier, INRAE, Institut Agro, Montpellier, France. Electronic address:
An experiment involving the ageing of Syrah red wine was conducted over a period of 24 months, during which the impact of four different micro-agglomerated corks was examined. An untargeted UHPLC-Q-Orbitrap metabolomics analysis was performed and provided valuable insights into the chemical dynamics of red wine evolution. Forty-three specific discriminating compounds were found for non-aged wines, including various CHO and CHON-types molecules.
View Article and Find Full Text PDFAnaerobic degradation of excess protein-rich fish feed drives CH ebullition in a freshwater aquaculture pond.
Sci Total Environ
December 2024
Department Lake Research, Helmholtz Centre for Environmental Research-UFZ, Brückstraße 3a, 39114 Magdeburg, Germany.
Aquaculture is a climate-relevant source of greenhouse gases like methane. Methane emissions depend on various parameters, with organic matter playing a crucial role. Nevertheless, little is known about the composition of organic matter in aquaculture.
View Article and Find Full Text PDFSynthesis of UiO-66-Pyca-CuO by a Simple and Novel Method: MOF-based Metal Thin Film as Heterogeneous Catalysts for the Synthesis of α-Aminonitriles.
ACS Appl Mater Interfaces
August 2024
Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology (IUST), Tehran 16846-13114, Iran.
Metal-organic frameworks (MOFs), particularly UiO-66-NH, are employed as catalysts in many industrial catalyst applications. As converting catalysts into thin film significantly increases their catalytic properties, we report a general approach to synthesizing MOF thin films (UiO-66-Pyca-CuO). First, functionalization of UiO-66-NH was done with 3-pyridine carboxaldehyde by the postsynthesis method, and then, UiO-66-Pyca was entangled on the surface of copper oxide nanoparticles with a modern strategy (MOF thin film).
View Article and Find Full Text PDFQuantitation of Active Pharmaceutical Ingredients in Polymeric Drug Products Using Elemental Analysis.
Methods Mol Biol
March 2024
Nanotechnology Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD, USA.
Polymeric prodrugs have gained significant popularity as a strategy to enhance the bioavailability and improve the pharmacokinetic properties of active pharmaceutical ingredients (API). Since the amount of the API in a polymeric prodrug product directly impacts both safety and efficacy, there is a pressing need for robust and accurate analytical methods to quantify the API in these formulations. Presently, drug quantification methods include reversed-phase high-performance liquid chromatography (RP-HPLC) and size exclusion chromatography (SEC)-based molecular weight determination.
View Article and Find Full Text PDFSpatial variations of DOM in a diverse range of lakes across various frozen ground zones in China: Insights into molecular composition.
Water Res
March 2024
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; School of Environment and Planning, Liaocheng University, Liaocheng 252000, China. Electronic address:
Dissolved organic matter (DOM) plays a significant role in aquatic biogeochemical processes and the carbon cycle. As global climate warming continues, it is anticipated that the composition of DOM in lakes will be altered. This could have significant ecological and environmental implications, particularly in frozen ground zones.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!