Journal ArticleDOI
Designer magnets containing cyanides and nitriles.
Joel S. Miller,Jamie L. Manson +1 more
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TLDR
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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Cyano-bridged assemblies induced by positive ions: Hydrothermal syntheses, crystal and powder X-ray structures, and magnetic properties
givennameBin surnameYuan,givennameMin Min surnameYue,givennameYing surnameWang,givennameJu Yan surnameLiu,givennameBin surnameDing,givennameXiao Jun surnameZhao +5 more
TL;DR: In this article, a single-crystal X-ray diffraction analysis showed that the framework of 1 is a one-dimensional chiral helical substructure, and the comparison between powder X-Ray diffraction (PXRD) and a simulated on from crystal data confirmed that the crystal phase was pure.
Journal ArticleDOI
An Efficient Synthesis of Nitriles from Aldoximes Using Diethyl Phosphorocyanidate under Mild Conditions
TL;DR: The first application of Diethyl phosphorocyanidate (DEPC) is reported to be applied to the efficient synthesis of nitriles from aldoximes under mild conditions.
Journal ArticleDOI
Perfluoroalkanosulfonyl fluoride: A useful reagent for dehydration of aldoximes to nitriles
TL;DR: The reaction of a variety of aldoximes with perfluoroalkanosulfonyl fluoride in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) in dichloromethane smoothly generated the corresponding nitriles in 70%-95% yields as discussed by the authors.
Journal ArticleDOI
RhodiumIII-Catalyzed Successive Csp2‒H and Csp2‒Csp2 Bond Activation of Aryl Oximes: Synthetic and Mechanistic Studies
TL;DR: A rhodiumIII-catalyzed redox-neutral molecule that combines selective C–H cleavage with C–C cleavage in a tandem reaction to achieve skeletal diversification from simple raw materials is described.
Journal ArticleDOI
Synthesis of 14-aryl/alkyl -14H-dibenzo [a,j] Xanthenes and Nitriles Catalyzed by KHSO4-SiO2 Under Ultra-sonication and Solvent-free Conditions
TL;DR: In this article, a green, simple and highly efficient one-pot synthetic method was proposed to synthesize xanthenes and aldoximes from 14-Aryl/Alkyl-14H-dibenzo.
References
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Journal ArticleDOI
Selective binding and removal of guests in a microporous metal–organic framework
TL;DR: In this paper, a metal-organic framework was designed to bind aromatic guest molecules selectively, and the inclusions can be selectively readsorbed, even after the removal of included guest molecules, and they showed that the crystal lattice was thermally stable up to 350 °C.
Journal ArticleDOI
Design and construction of a new class of scaffolding-like materials comprising infinite polymeric frameworks of 3D-linked molecular rods. A reappraisal of the zinc cyanide and cadmium cyanide structures and the synthesis and structure of the diamond-related frameworks [N(CH3)4][CuIZnII(CN)4] and CuI[4,4',4'',4'''-tetracyanotetraphenylmethane]BF4.xC6H5NO2
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+.
Journal ArticleDOI
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.
Journal ArticleDOI
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).