A new family of 2-fold interpenetrated primitive cubic () networks of formula [M(L)(CrO)] (M = Co, Ni, Cu and Zn; L = 4,4'-azopyridine), , has been synthesised and their structures, permanent porosity and gas sorption properties were comprehensively characterised. Molecular simulations indicate that CO molecules occupy both of the two distinct ultramicropores that run through this isostructural series. The orientation of the CrO pillars is thought to contribute to high isosteric enthalpy of adsorption () towards CO and temperature programmed desorption experiments reveal that selectively adsorbs CO from gas mixtures that simulate flue gas. Performance in this context is among the highest for physisorbents measured to date and these materials are readily regenerated at 50 °C.
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http://dx.doi.org/10.1039/c6sc01385f | DOI Listing |
iScience
January 2025
School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China.
Efficiently generating energetically stable crystal structures has long been a challenge in material design, primarily due to the immense arrangement of atoms in a crystal lattice. To facilitate the discovery of stable materials, we present a framework for the generation of synthesizable materials leveraging a point cloud representation to encode intricate structural information. At the heart of this framework lies the introduction of a diffusion model as its foundational pillar.
View Article and Find Full Text PDFISME Commun
January 2024
Department of Plant and Microbial Biology, North Carolina State University, 112 Derieux Place, Thomas Hall, Raleigh, NC 27607, United States.
Microbially induced carbonate precipitation (MICP) is a natural process with potential biotechnological applications to address both carbon sequestration and sustainable construction needs. However, our understanding of the microbial processes involved in MICP is limited to a few well-researched pathways such as ureolytic hydrolysis. To expand our knowledge of MICP, we conducted an omics-based study on sedimentary communities from travertine around the CO-driven Crystal Geyser near Green River, Utah.
View Article and Find Full Text PDFACS Omega
January 2025
Applied Chemistry and Environment Laboratory, Applied Bioorganic Chemistry Team, Faculty of Science, Ibn Zohr University, Agadir 80000, Morocco.
The goal of this study was to synthesize and evaluate new antimicrobial compounds. We specifically focused on the development of 2,5-disubstituted tetrazole derivatives containing the O-methyl-2,3-O-isopropylidene-(D)-ribofuranoside groups through N-alkylation reactions. The synthesized compounds were characterized using H and C nuclear magnetic resonance (NMR) spectroscopy.
View Article and Find Full Text PDFPhys Chem Chem Phys
January 2025
School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China.
The structural stability of the energetic material 2,2',4,4',6,6'-hexanitrostilbene (-HNS) under high pressure is critical for optimizing its detonation performance and low sensitivity. However, its structural response to external pressure has not been sufficiently investigated. In this study, high-pressure single-crystal X-ray diffraction data of -HNS demonstrate that the sample exhibits pronounced anisotropic strain, demonstrating an unusual negative linear compressibility (NLC) along the axis, with a coefficient of -4.
View Article and Find Full Text PDFDalton Trans
January 2025
Hebei Center for New Inorganic Optoelectronic Nanomaterial Research, Hebei Key Laboratory of Heterocyclic Compounds, College of Chemical Engineering and Materials, Handan University, Handan 056002, P. R. China.
The isolation of a stable persistent carbazole-stabilized boron-centered monoradical anion 1˙, which has a high spin density at the B atom, has been reported. It is characterized using the crystal structure and UV-vis absorption spectrum, as well as electron paramagnetic resonance spectroscopy. Interestingly, the B-N bond was activated by the boron-centered radical anion 1˙, which had not been reported before.
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