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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Iridium-catalyzed α-Alkylation of Acetonitrile with Primary and Secondary Alcohols
Takuya Sawaguchi,Yasushi Obora +1 more
TL;DR: In this paper, a very clean and atom-economical method for alkylation with primary and secondary alcohols in the presence of t-BuOK using [Ir(OH)(cod)]2 as a catalyst is described.
Journal ArticleDOI
The direct electrophilic cyanation of β-keto esters and amides with cyano benziodoxole.
TL;DR: The direct electrophilic α-cyanation of β-keto esters and amides has been developed using a hypervalent iodine benziodoxole-derived cyano reagent and the highly functionalized quaternary carbon-centered nitriles were produced in high to excellent yields.
Journal ArticleDOI
Cyanometallate-Bridged Didysprosium Single-Molecule Magnets Constructed with Single-Ion Magnet Building Block
Yang Liu,Yan-Cong Chen,Jiang Liu,Wen-Bin Chen,Guo-Zhang Huang,Si-Guo Wu,Jin Wang,Jun-Liang Liu,Ming-Liang Tong +8 more
TL;DR: The building block approach for the synthesis of a family of dilanthanide single-molecule magnets bridged with a cyanometallate starting from a monolanthanide SMM is shown.
Journal ArticleDOI
Synthese aromatischer Nitrile mithilfe nichtmetallischer CN-Quellen
TL;DR: Aromatische Nitrile werden effizient durch the ubergangsmetallkatalysierte Cyanierung von Aryl(pseudo)halogeniden with metallischen CN-Quellen wie CuCN, KCN, NaCN, Zn(CN)2, TMSCN or K4[Fe(CN)) synthetisiert.
Journal ArticleDOI
Spin canting and topological ferrimagnetism in two manganese(II) coordination polymers generated by in situ solvothermal ligand reactions
TL;DR: Two manganese(II) coordination polymers have been synthesized by solvothermal treatment, in which the ligands bpt and pa were generated in situ by cyclocondensation and hydrolysis of 2-pyridylamidrazone, respectively as discussed by the authors.
References
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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.
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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).