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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Novel ruthenium–terpyridyl complex for direct oxidation of amines to nitriles
Liliana Cristian,Simona Nica,Octavian Dumitru Pavel,Constantin Mihailciuc,Valer Almasan,Simona M. Coman,Christopher Hardacre,Vasile I. Parvulescu +7 more
TL;DR: In this paper, Ru2Cl4(az-tpy)2 complex was used for the oxidation of both aliphatic and aromatic amines to nitriles under benign conditions with dioxygen or air.
Journal ArticleDOI
Cyano-bridged terbium(III)-chromium(III) bimetallic quasi-one-dimensional assembly exhibiting long-range magnetic ordering.
Yang Guo,Yang Guo,Gong-Feng Xu,Chao Wang,Ting-Ting Cao,Jinkui Tang,Zhan-Quan Liu,Yue Ma,Shi-Ping Yan,Peng Cheng,Dai-Zheng Liao +10 more
TL;DR: The long-range magnetic ordering observed in complex 1 illuminates that this complex is a molecule-based magnet with critical temperature of about 5 K, which is probably due to the introduction of highly anisotropic terbium(III) ion.
Journal ArticleDOI
A Novel Water-Dispersible/Magnetically Recyclable Pd Catalyst for C–C Cross-Coupling Reactions in Pure Water
TL;DR: In this paper, a novel water-dispersible magnetically recyclable Pd heterogeneous catalyst, denoted as Pd-γ-Fe2O3-2-ATP-TEG-MME, was initially synthesized and then characterized by diverse methods such as FT-IR,...
Journal ArticleDOI
A Molecular Iron-Based System for Divergent Bond Activation: Controlling the Reactivity of Aldehydes
Basujit Chatterjee,Basujit Chatterjee,Soumyashree Jena,Soumyashree Jena,Vishal Chugh,Vishal Chugh,Thomas Weyhermüller,Christophe Werlé,Christophe Werlé +8 more
Journal ArticleDOI
Metal-Azide-Pyrimidine Complexes M(N3)2(pm) with a Three-Dimensional Network Showing Weak Ferromagnetism for M = Mn and Fe and Antiferromagnetism for M = Co and Ni
TL;DR: In this article, the phase transitions of M(N3)2(pm) were observed at 51, 39, 41, and 46 K for M = Mn, Fe, Co, and Ni, respectively; here pm denotes pyrimidine.
References
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Selective binding and removal of guests in a microporous metal–organic framework
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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).