One-dimensional cyanide-bridged Cr(III)–Cu(II) complexes: synthesis, crystal structures and magnetic properties

Three Chiral Cyanide-Bridged Cr–Cu Complexes: Synthesis, Crystal Structures and Magnetic Properties

“…The recent works have proved that trans-dicyanometallates are good building blocks for synthesizing cyanide-bridged magnetic complexes. [33][34][35][36][37][38] The relatively large planar pyridinecarboxamide ligand at the equatorial position can not only effectively lower the dimensionality of the resulted complex, but also weaken the supramolecular intermolecular magnetic interactions. With this in mind and also for the purpose of the preparation of chiral magnetic complexes, we investigated the reactions of trans-dicyanidochromium(III) with chiral amine copper(II) compounds and obtained three new chiral cyanide-bridged Cr(III)-Cu(II) complexes.…”

“…[28][29][30][31][32] In recent years, in order to clearly clarify the magnetic structure correlation in low-dimensional magnetic systems and to prepare interesting low-dimensional molecular magnetic materials, a series of cyanide precursors containing the larger equatorial in-plane ligands and two trans-cyanide groups have been designed. [33][34][35][36][37][38] Studies have shown that these types of cyanide-containing precursors were good choices for assembling cyanide bridged bimetallic magnetic complexes with different structures, such as multinuclear, nanomolecular and one-dimension-al chains, and interesting magnetic properties. On the other hand, in the research field of functional molecular magnetic materials, the design and synthesis of chiral magnetic materials are of great significance for the basic research of magnetic induction second harmonic generation (MSHG) and magnetic chiral dichroism (MCHD) and their possible applications in a variety of new technologies.…”

The Paramagnetic or Spin Crossover Iron(III) Complexes Based-on Pentadentate Schiff Base Ligand: Crystal Structure, and Magnetic Property Investigation

“…[34][35][36] In fact, some previous reports have proven that the above pentadentate Schiff base based iron(III) compounds are suitable candidates for assembling SCO materials under the help of the pyridine-like ligands 37,38 and some of the obtained complexes have been structurally characterized and experimentally magnetic investigated. Taking into account that the cyanometallic precursors with tunable coordination field, such as [M(CN) 4 ] 2-(M = Ni, Pd, Pt), [M'(CN) 2 ] -(M' = Cu, Ag, Au) and other polycyanometallates, have been widely employed to construct SCO materials, especially for those ones with Hoffman topologic structures, [39][40][41][42] the reactions of the pentadentate Schiff base iron(III) compound with the trans-dicyanoiron(III)/ cobalt(III) building blocks (Scheme 1), for the latter which has been extensively used to prepare cyanide-bridged molecular magnetic materials by our group, [43][44][45][46] 47,48 At the same time, by using 4,4'-bipy, 49 py or dmap (dmap = 4-dimethylaminopyridine) as ancillary ligand, three monometallic Fe(III) complexes with the formula [(Fe(L)) 2 (4,4'-bipy)](BPh 4 ) 2 (3), [Fe(L)(py)] (BPh 4 ) ( 4) and [Fe(L)(dmap)](BPh 4 ) ( 5) have been successfully obtained. The synthesis, crystal structures and magnetic properties for the reported complexes will be detailed described in this paper.…”

Cyanide-Bridged Polynuclear and One-Dimensional FeIII-MnIII/II Bimetallic Complexes Based-on Pentacyanoferrite(III) Building Block: Synthesis, Crystal Structures, and Magnetic Properties

“…Because the blocking organic ligand(s) in either the cyano precursors or the counterpart assemble segments can contribute obvious steric effect and therefore efficiently lower the dimen-sionality of the target product, many low-dimensional [M(L)(CN) x ] n--based complexes have been expectedly obtained. [36][37][38] Among all the polycyanoferrite(III) building blocks, the pentacyanoferrite(III) [Fe(L ' )(CN) 5 ] 2-( L' = monodentate ligand) precursors have been comparatively limited employed in cyanide-bridged molecule magnetism field. [39][40][41][42][43] In this paper, we are focusing on the designed preparation of new cyanide-bridged magnetic complexes with the exploitation of pentacyanideferrite(III) compound [Fe(CN) 5 (imidazole)] 2as building block and manganese compounds as assemble segments (Scheme 1).…”