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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Boosting electrochemical hydrogen evolution by coupling anodically oxidative dehydrogenation of benzylamine to benzonitrile
TL;DR: In this paper , a more thermodynamically and kinetically favorable reaction, electrochemical oxidative dehydrogenation (EODH) of benzylamine to replace the conventional OER, catalyzed by a cobalt cyclotetraphosphate (Co2P4O12) nanorods catalyst grown on nickel foam.
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Zinc (II) facilitated nucleophilic addition on to N‐(4‐chlorophenyl) carbon hydrazonoyl dicyanide and hybrid complex formation: X‐ray, spectral characteristics, DFT, molecular docking, and biological studies
TL;DR: In this paper , isolated crystalline, N-(4-chlorophenyl) carbonohydrazonoyl dicyanide, NCCD, showed a unique behavior in the presence of zinc ions, ethanol, and H2O.
Journal ArticleDOI
Bis(2,2′-bipyridyl dioxide-κ2 N,N′)bis(tricyanomethanido)cobalt(II) dihydrate
TL;DR: In the title compound, [Co(C4N3)2(C10H8N2O2)]·2H2O, a novel tricyanomethanide complex, the CoII atom is located on an inversion center and has a distorted octahedral coordination with two 2,2′-bipyridyl dioxide (dpdo) molecules and two trans tricianomethanides (tcm) anions.
Journal ArticleDOI
Improved organocatalytic electrophilic α-cyanation of β-keto amides with 1-cyanato-4-nitrobenzene
TL;DR: In this paper, the enantioselectivity of α-cyanation of β-keto amides was greatly improved as a result of an enhanced double-hydrogen bonding.
Journal ArticleDOI
Are formal oxidation states above one viable in cyclopentadienylcopper cyanides
Cong-Zhi Wang,Xiuhui Zhang,Qian-Shu Li,Qian-Shu Li,Yaoming Xie,R. Bruce King,Henry F. Schaefer +6 more
TL;DR: The prospects for the copper(II) derivative Cp2Cu2( CN)2 contrast with that of the “simple” Cu(CN)2, which is shown both experimentally and theoretically to be unstable with respect to cyanogen loss to give CuCN.
References
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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+.
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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).