Journal ArticleDOI
Designer magnets containing cyanides and nitriles.
Joel S. Miller,Jamie L. Manson +1 more
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Three-dimensional network solids exhibiting magnetic ordering have been made from several first-row metal ions and bridging unsaturated cyanide, tricyanomethanide, and/or dicyanamide ligands, which possess several different structural motifs, and the shorter the bridge, the stronger the interaction.Abstract:
Magnets synthesized from molecules have contributed to the renaissance in the study of magnetic materials. Three-dimensional network solids exhibiting magnetic ordering have been made from several first-row metal ions and bridging unsaturated cyanide, tricyanomethanide, and/or dicyanamide ligands. These materials possess several different structural motifs, and the shorter the bridge, the stronger the interaction (i.e., C⋮N > N⋮CN ≫ N⋮CNC⋮N = N⋮CCC⋮N). Cyanide additionally has the ability to discriminate between C- and N-bonding to form ordered heterobimetallic magnets, and the strong coupling can lead to ferro- or ferrimagnetic ordering substantially above room temperature. Tricoordination of tricyanomethanide results in spin-frustrated systems, which possess interpenetrating rutile-like networks. In contrast, single rutile-like frameworks are formed by μ3-bonded dicyanamide, which leads to ferromagnetics and weak ferromagnetics.read more
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CuII2L based polymeric ladder using dicyanamide bridges: Synthesis, crystal structure and magnetic studies
Matilde Fondo,Ana M. García-Deibe,Noelia Ocampo,Ramon Vicente,Jesús Sanmartín,Carolina Sañudo +5 more
TL;DR: In this paper, a ladder-like polymer based on dinuclear blocks was shown to be a polymeric complex containing the dianion of the linear hexadentate Schiff base H2L3.
Journal ArticleDOI
Recent Trends in the Iron‐Catalyzed Cyanation Reactions
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Assembly process of CuHCF/MPA multilayers on gold nanoparticles modified electrode and characterization by electrochemical SPR
TL;DR: In this paper, gold nanoparticles were deposited onto 2-mercaptoethylamine (MEA)-assembled planar gold thin film by virtue of a solution-based self-assembly strategy.
Journal ArticleDOI
An unexpected involvement of ethyl-2-cyano-2-(hydroxyimino) acetate cleaved product in the promotion of the synthesis of nitriles from aldoximes: a mechanistic perception
TL;DR: In this article, an unexpected involvement of oxyma cleaved product in promoting the synthesis of nitriles was observed, which improved the applicability of the method by reducing the time needed for the reaction to be completed over that of the sulfonyl chlorides.
Journal ArticleDOI
The computational study on the structural and force field changes, caused by the conversion of dicyanamide into the azanion
Miglena K. Georgieva,I.G. Binev +1 more
TL;DR: In this article, the structural and force field changes caused by the conversion of the dicyanamide molecule HN(CN)2 into the corresponding azanion −N( CN)2, have been studied by ab initio and DFT 6−31++G(d,p) force field calculations, as well as (for the anion only) on the basis of literature experimental data.
References
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B. F. Hoskins,Richard Robson +1 more
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A room-temperature organometallic magnet based on Prussian blue
TL;DR: In this paper, a room-temperature organometallic magnet was synthesized by combining a hexa-cyanometalate [M(CN)6]q− with a Lewis acid Lp+.
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Strongly Geometrically Frustrated Magnets
TL;DR: The study of cooperative phenomena in magnetism has provided fertile ground for testing theories of interacting systems that possess different spatial dimensions, ranges, and sign of interactions, and that exhibit local anisotropy of the basic interacting unit, the magnetic spin this paper.
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Sol−Gel Synthesis of KVII[CrIII(CN)6]·2H2O: A Crystalline Molecule-Based Magnet with a Magnetic Ordering Temperature above 100 °C
TL;DR: In this paper, the use of sol-gel methods was described to synthesize several crystalline molecule-based magnets with the Prussian blue structure, including KV II[CrIII (CN)6]‚2H2O, with an ordering temperature of 376 K (103°C).