Journal ArticleDOI
Ferromagnetic Ordering, Anisotropy, and Spin Reorientation for the Cyano-Bridged Bimetallic Compound Mn2(H2O)5Mo(CN)7·4H2O (α Phase)
Joulia Larionova,Rodolphe Clérac,Joaquín Sanchiz,Olivier Kahn,Stéphane Golhen,Lahcène Ouahab +5 more
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In this article, the title compound has been synthesized by slow diffusion of aqueous solutions containing K4[Mo(CN)7]·2H2O and [Mn(H 2O)6](NO3)2, respectively.Abstract:
The title compound has been synthesized by slow diffusion of aqueous solutions containing K4[Mo(CN)7]·2H2O and [Mn(H2O)6](NO3)2, respectively. The compound crystallizes in the monoclinic system, space group P21/c. The Mo site is surrounded by seven −C−N−Mn linkages in a distorted pentagonal bipyramid fashion. There are two distorted octahedral Mn sites, one with four and the other with three Mn−N−C−Mo linkages. The structure is three-dimensional and of low symmetry. It consists of ladders made of edge-sharing lozenge motifs (MoCNMnNC)2 running along the a direction. These ladders are linked further along the b and c directions. Both temperature dependences of the magnetic susceptibility and field dependences of the magnetization have been investigated along the three crystallographic directions, a, b, and c*. The angular dependence of the magnetization in the ab plane as a function of the external field has also been measured. These single crystal magnetic measurements have revealed that the compound orde...read more
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Engineering coordination polymers towards applications
TL;DR: In this paper, the development in the field of coordination polymers or metal-organic coordination networks, MOCNs (metal-organic frameworks, MOFs) is assessed in terms of property investigations in the areas of catalysis, chirality, conductivity, luminescence, magnetism, spin-transition (spin-crossover), nonlinear optics (NLO) and porosity or zeolitic behavior upon which potential applications could be based.
Journal ArticleDOI
Old materials with new tricks: multifunctional open-framework materials.
TL;DR: This critical review provides an up-to-date survey to this new generation of multifunctional open-framework solids, classified into five different sections: magnetic, chiral, conducting, optical, and labile open-frameworks for sensing applications.
Journal ArticleDOI
Synthesis and magnetism of multi-dimensional cyanide-bridged bimetallic assemblies
Masaaki Ohba,Hisashi Ōkawa +1 more
TL;DR: In this article, the structures and magnetism of complex-based metal assemblies derived from [M(CN) 6 ] n − (M=Cr 3+, Mn 3+, Fe 3+ and Co 3+ ), Fe 2+ ; n =3, 4) and coordinatively unsaturated [M A (L) x ] m + (M A =Mn 2+, Ni 2+, Cu 2+ and Mn 3+, Fe 3+, and L=polyamine ligand, salen 2− derivatives) are reviewed.
Journal ArticleDOI
Photoswitchable coordination compounds
TL;DR: In this article, the basic photophysical phenomena together with representative examples such as nitroprusside derivatives, relevant spin crossover complexes, stilbenoid complexes and finally Prussian blue analogues are discussed.
Journal ArticleDOI
Design of single chain magnets through cyanide-bearing six-coordinate complexes
Rodrigue Lescouëzec,Luminita Marilena Toma,Jacqueline Vaissermann,Michel Verdaguer,Fernando S. Delgado,Catalina Ruiz-Pérez,Francesc Lloret,Miguel Julve +7 more
TL;DR: In this paper, the design and preparation of stable cyanide-bearing six-coordinate complexes of formula [MIII(L)(CN)x](x+l−−m)− (M = trivalent transition metal ion and L = polydentate blocking ligand) are summarized and the appropriate choice of the end-cap ligand L whose denticity determines the number of coordinated cyanide groups in the mononuclear precursors.
References
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Anisotropic Superexchange Interaction and Weak Ferromagnetism
TL;DR: In this paper, the Anderson theory of superexchange was extended to include spin-orbit coupling and the antisymmetric spin coupling suggested by Dzialoshinski from purely symmetry grounds and the symmetric pseudodipolar interaction were derived.
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A thermodynamic theory of “weak” ferromagnetism of antiferromagnetics
TL;DR: In this paper, a thermodynamic theory of weak ferromagnetism of α-Fe 2 O 3, MnCO 3 and CoCO 3 is developed on the basis of landau's theory of phase transitions of the second kind.
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Theory of the role of covalence in the perovskite-type manganites [La,M(II)]MnO3
TL;DR: In this article, the theory of double exchange was applied to perovskite-type manganites and detailed qualitative predictions about the magnetic lattice, the crystallographic lattice and the electrical resistivity were made.
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Photoinduced Magnetization of a Cobalt-Iron Cyanide
TL;DR: The magnetization in the ferrimagnetic region below 16 kelvin was substantially increased after illumination and could be restored almost to its original level by thermal treatment and these effects are thought to be caused by an internal photochemical redox reaction.