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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Structural diversity of four novel cadmium coordination polymers constructed by 1,4-bis(imidazol-1-yl)butane and anion ligands
TL;DR: In this paper, the reaction of the flexible bis(imidazole) ligand 1,4-bis-1-yl)butane (bimb) with corresponding Cd(II) salts (NCS −, dicyanamide (dca), N 3 -, ClO 4 - ) yields four new coordination polymers, from 1D to 3D networks.
Journal ArticleDOI
Thin-film deposition of an organic magnet based on vanadium methyl tricyanoethylenecarboxylate.
TL;DR: These thin films exhibit room-temperature magnetic ordering and semiconducting behavior, demonstrating the ability of tuning their magnetic, and potentially spintronic, functionality via chemical modification of the organic ligand.
Journal ArticleDOI
Synthesis, structure and magnetism of two new polymeric double dicyanamido-bridged Mn(II) compounds
Gerard A. van Albada,Stefania Tanase,Aminou Mohamadou,Ilpo Mutikainen,Urho Turpeinen,Jan Reedijk +5 more
TL;DR: In this paper, the synthesis, crystal structures, as well as the magnetic properties, of two new 1D polymeric Mn(II) compounds containing the ligand dicyanamide (dca), with the general formula [Mn(II)(dca)2(L)2]n (where L = C2H5OH and 2-aminopyrimidine (abbreviated as ampym)) are reported.
Journal ArticleDOI
Two [Au(CN)2]−-bridged heterometallic coordination polymers directed by different 2,2′-bipyridyl-like ligands
Yang Guo,Zhan-Quan Liu,Bin Zhao,Yuhua Feng,Gong-Feng Xu,Shi-Ping Yan,Peng Cheng,Qing-Lun Wang,Dai-Zheng Liao +8 more
TL;DR: In this paper, two new cyanide-bridged heterobimetallic coordination polymers constructed by using the [Au(CN)2]− building block, {Cd(bipy)[Au (CN) 2]2]2}n (1) and {{Cd (phen[Au[CN] 2] 2 ]2] 2(H2O)}·iPrOH}n(2) (Bipy = 2,2′-bipyridine, phen = 1,10-phenanthroline
Journal ArticleDOI
Efficient conversion of aldoximes to nitriles using phosphoric acid diethyl ester 2-phenylbenzimidazol-1-yl ester
TL;DR: In this article, aromatic aldoximes were converted to the corresponding nitriles in good to excellent yields by employing phosphoric acid diethyl ester 2-phenylbenzimidazol-1-yl esters as reagent.
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).