Crystal structure and magnetic properties of the layer ferrimagnet N(n-C₅H₁₁)₄Mn^IIFe^III(C₂O₄)₃

Hybrid Magnetic Materials Based on Nitroxide Free Radicals and Extended Oxalato‐Bridged Bimetallic Networks

“…The latter orders ferromagnetically at T C ϭ 11.3 K and exhibits a rounded maximum in the thermal dependence of the in-phase component. This is in contrast to the extremely sharp peak observed for the p-rad analogue (6). Also, field-dependent studies show a much smaller coercive field (H coer ϭ 230 G at 2 K) compared with that in 2.…”

“…[3Ϫ5] The majority of the resultant structures are composed of edge-sharing octahedra and belong to two categories, namely a) 2D bimetallic compounds of formula A[MЈM(ox) 3 ] (A ϭ quaternary onium cation, MЈ ϭ metal) with a honeycomb-layered structure [6,7] and b) 3D homometallic compounds of formulae A[M 2 Ј (ox) 3 3 ] 2ϩ ) with a cubic chiral packing. [8,9] Since the formation of each structural type depends on the use of a particular A mϩ cation, these have been considered as templating agents for the host structure.…”

Funktionale poröse Koordinationspolymere

“…[192] {Cu[Cu(tpyp)]} n (H 2 tpyp = 5,10,15,20-Tetra(4-pyridyl)-21H,23H-porphyrin) enthält gemäß Strukturanalyse ein mit PtS verwandtes Gerüst. [192] [196] Fe, [198] Ru [199] ) aufgebaut. Ein ähnlicher Metalloligand, [Cr(dto) 3 ] 3À (dto = Dithioacetat), wird für Dimetallaggregate wie {NPr 4 [MCr(dto) 3 ]} n (M = Fe, Co, Ni, Zn) verwendet.…”

Magnetic molecular nanostructures: Design of magnetic molecular materials as monolayers, multilayers and thin films

“…In a first step, this results in the formation of anionic oligomeric species in solution. In a second step, the presence of bulky cations (A + ) in the media, leads to the self-assembling of these molecular species and to the formation of non-soluble coordination polymers of formula Depending on the identity of the divalent and the trivalent metallic ions, these compounds behave as ferromagnets, ferrimagnets or weak ferromagnets with critical temperatures between 6 and 45 K [15][16][17][18][19][20][21][22][23][24]. The substitution of the electronically innocent organic bulky cations with cationic organic radicals, such as BEDT-TTF, resulted in the preparation of the hybrid compound b-(BEDT-TTF) 3 [MnCr(ox) 3 ] [14].…”