The title compound, (CHN)[NiCl]Cl, comprises an Ni cation tetra-hedrally coordinated by four chloride anions, a non-coordinating chloride anion and an essentially planar terpyridinium trication (tpyH), in which the central pyridinium ring forms dihedral angles of 5.7 (2) and 6.0 (2)° with the peripheral pyridinium rings. Three inter-species N-H⋯Cl hydrogen bonds are formed with the Cl anion, which also forms a link between the (tpyH) cations through an aromatic C-H⋯Cl inter-action, forming a zigzag chain extending along the 2 () screw axis. Two of the anionic Cl atoms of the [NiCl] anions form Ni-Cl⋯π inter-actions with separate pyridinium rings [Ni⋯ = 3.669 (3) and 3.916 (4) Å]. In the crystal, successive undulating inorganic and organic layers are formed, extending across the (100) plane. Thermogravimetric and differential thermal analysis (TGA/DTA) indicate that the compound starts to decompose at 313 K and may be a candidate for use as a blue-light luminescent material.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5730256 | PMC |
| http://dx.doi.org/10.1107/S2056989017016784 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Reductive Zincke Reaction: Opening of Pyridinium Rings to δ-Amino Ketones via Transfer Hydrogenation.
Chemistry
December 2024
Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, UK.
The Zincke reaction and Birch reduction have been one of the few reactions that allow for ring opening of pyridines ever since the discovery of pyridine more than a century ago. This paper presents a new addition to the list of pyridine ring-opening reactions, reductive Zincke reaction, which affords saturated δ-amino ketones. Under the catalysis of a simple rhodium complex, pyridinium salts with diverse substituents are reduced with formic acid, ring-opened with water, transaminated with a secondary amine and further reduced to afford a wide range of δ-amino ketones, including those in which the alkane chain of the ketones is selectively deuterated or fluorinated.
View Article and Find Full Text PDFDiverse Cyclization Pathways Between Nitriles with Active -Methylene Group and Ambiphilic 2-Pyridylselenyl Reagents Enabled by Reversible Covalent Bonding.
Int J Mol Sci
November 2024
Research Institute of Chemistry, Peoples' Friendship University of Russia, 6 Miklukho-Maklaya Street, 117198 Moscow, Russia.
Herein, we describe a novel coupling between ambiphilic 2-pyridylselenyl reagents and nitriles featuring an active α-methylene group. Depending on the solvent employed, this reaction can yield two distinct types of cationic pyridinium-fused selenium-containing heterocycles, 1,3-selenazolium or 1,2,4-selenadiazolium salts, in high yields. This is in contrast to what we observed before for other nitriles.
View Article and Find Full Text PDFImpact of Dihedral Angle in Conjugated Organic Cation on the Structures and Properties of Organic-Inorganic Lead Iodides.
Chemistry
January 2025
Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, United States.
Conjugated organic cations are intriguing for organic-inorganic halide perovskites due to their direct participation in the optoelectronic properties of hybrid materials. In conjugated cations, the dihedral angle, or torsion angle, between adjacent aromatic rings is a critical secondary structural element. This angle influences not only the shape of the cations but also the overlap between the π-orbitals on adjacent rings, thereby affecting their electronic properties.
View Article and Find Full Text PDFSynthesis and characterization of soluble pyridinium-containing copolyimides.
RSC Adv
November 2024
University of Chemistry and Technology (UCT) Prague Technicka, 5 Prague 166 28 Czech Republic
Article Synopsis
- Novel copolyimides were created using specific materials (ODPA, BIS P, and DAP) through a two-step process involving thermal imidization followed by quaternization with methyl iodide.
- The resulting copolyimides were analyzed for structure using various methods (FTIR, NMR, EDX) and showed varying thermal stability and solubility characteristics, especially those with less than 0.3 DAP content.
- The best ionic conductivity (0.234 S cm) was observed in samples with 0.3 DAP and a specific level of quaternization, while higher DAP contents led to instability likely due to hydrolysis.*
Charge-Assisted Anion-π Interaction and Hydrogen Bonding Involving Alkylpyridinium Cations.
ACS Omega
October 2024
Department of Chemistry, Ball State University, Muncie, Indiana 47306, United States.
Competition and cooperation of charge-assisted anion-π interactions and hydrogen bonding were explored in the solid state and in solutions of 1-ethyl-4-carbomethoxypyridinium iodide, the compound utilized by Kosower to calculate solvent polarity Z-indices. X-ray structural analysis of this salt revealed multiple short contacts of iodide anions with hydrogen atoms and aromatic rings of pyridinium cations. Geometric characteristics, quantum theory of atoms in molecules (QTAIM), and noncovalent interaction (NCI) analysis of these contacts indicated comparable interaction energies of the anion-π and hydrogen bonding between iodide and pyridinium cation.
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!