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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Synthesis and Crystal Structure of KLa[C(CN)3]4·H2O containing a Shielded Potassium Ion
TL;DR: KLa[C(CN)3]4·H2O was crystallized from an aqueous solution containing La(NO3)3·6H 2O and K[C[C)3]. The crystal structure was solved and refined from X-ray single crystal data (P4/n, Z = 2, a = b = 12.379(1) A, c = 6.5695(8) A), V = 1006.7(2) A3).
Journal ArticleDOI
Recyclable MeOPEG-clicked TEMPO catalyst for one-pot aerobic double dehydrogenation of alcohols to nitriles
TL;DR: In this paper, MeOPEG-clicked TEMPO was used for one-pot aerobic double dehydrogenation of alcohols to nitriles using aqueous ammonia as the nitrogen source and O2 (1) as the terminal oxidant.
Journal ArticleDOI
Synthesis and characterization of nickel(II) and copper(II) tricyanomethanide complexes with tris(2-aminoethyl)amine as co-ligand
TL;DR: Two transition metal tricyanomethanide (tcm) complexes with tris(2-aminoethyl)amine (tren) as co-ligand were synthesized and characterized by FT-IR spectrum, Thermogravimetry (TG) and single crystal X-ray diffraction analysis.
Journal ArticleDOI
A pyrimidine thiolate Rh(I) complex: structure, bonding and one-dimensional interactions in solid and in solution
Santiago Alvarez,Gabriel Aullón,Rosa Fandos,José Luis García Fierro,Pilar Ocón,Antonio Otero,Sergio Rojas,Pilar Terreros +7 more
TL;DR: A theoretical study of the intermolecular interactions and conformation of the title compound has been carried out, combining semi-empirical band calculations on the real chains and ab initio(MP2 level) calculations on a model dimer.
Journal ArticleDOI
A unique chain of trinuclear Cu(II) units containing both neutral and anionic N-(pyrimidin-2-yl) acetamide (Haapm, resp. aapm) as a ligand and dicyanamide (dca): Synthesis, characterization, X-ray structure and magnetism of [Cu3(μ-aapm)2(μ-dca)2(Haapm)2](CF3SO3)2
Gerard A. van Albada,Isja Dominicus,Marta Viciano-Chumillas,Ilpo Mutikainen,Urho Turpeinen,Jan Reedijk +5 more
TL;DR: In this article, the synthesis, crystal structure, as well as the electronic and magnetic properties, of a new trinuclear-based Cu(II) compound [Cu3(μ-aapm)2(μdca)2 (Haapm), containing the ligands N-(pyridin-2yl)acetamide (HAAPm) and dicyanamide (dca), is reported.
References
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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).