0000000000323897
AUTHOR
Matthias Grunert
A non-heme dinuclear iron(II) complex containing a single, unsupported hydroxo bridge.
Complexation of the tetrapodal pentadentate NN4 ligand 2,6-C5H3N[CMe(CH2NH2)2]2 (I) with iron(II) perchlorate hydrate in methanol, in the presence of N-methylimidazole, produces a diferrous complex with a single, unsupported mu-OH ligand between two {(I)FeII} coordination modules.
Spin Transition of 1D, 2D and 3D Iron(II) Complex Polymers The Tug-of-War between Elastic Interaction and a Shock-Absorber Effect
The structures of linear chain Fe(II) spin-crossover compounds of α,β- and α,ω-bis (tetrazol-1-yl)alkane type ligands are described in relation to their magnetic properties. The first threefold interlocked 3-D catenane Fe(II) spin-transition system, [μ-tris(1,4-bis(tetrazol-1-yl)butane-N1,N1′) iron(II)] bis(perchlorate), will be discussed. An analysis is made among the structures and the cooperativity of the spin-crossover behaviour of polynuclear Fe(II) spin-transition materials.
Influence of Metal Dilution on the Light‐Induced Spin Transition in Two 1D Chain Compounds: [Fe x Zn 1– x (btzp) 3 ](BF 4 ) 2 and [Fe x Zn 1– x (endi) 3 ](BF 4 ) 2 {btzp = 1,2‐Bis(tetrazol‐1‐yl)propane and endi = 1,2‐Bis(tetrazol‐1‐yl)ethane}
The thermal and light-induced spin transitions in [FexZn1–x(btzp)3](BF4)2 and [FexZn1–x(endi)3](BF4)2 {btzp = 1,2-bis(tetrazol-1-yl)propane; endi = 1,2-bis(tetrazol-1-yl)ethane} chain compounds have been investigated by magnetic susceptibility, photomagnetism and diffuse reflectivity measurements. These compounds display a thermal spin transition and the Light-Induced Excited Spin State Trapping (LIESST) effect at low temperature. For each compound, the thermal spin transition temperature, T1/2, and the relaxation temperature of the photo-induced high-spin state, T(LIESST), have been systematically determined. A decrease in T1/2 induces an increase in T(LIESST). The results are discussed an…
catena-[µ-Tris(1,2-bis(tetrazol-1-yl)ethane-N4,N4')iron(II)] bis(tetrafluoroborate): synthesis, structure, spectroscopic and magnetic characterization of a chain-type coordination polymer spin-crossover compound.
In analogy to a common synthesis of 1-substituted 5-H tetrazoles (Tetrahedron Lett. 36 (1995)1759; Beloruss. Gos. Univ., Minsk, USSR. Khim. Geterotsikl. Soedin. 11 (1985) 1521; Beloruss. Gos. Univ., Minsk, USSR. Khim. Geterotsikl. Soedin. 1 (1991) 66; BGU, Belarus. Vestsi Akad. Navuk Belarusi, Ser. Khim. Navuk 1 (1992) 73), the new bidentate ligand 1,2-bis(tetrazol-1-yl)ethane [endi] was synthesized and characterized by X-ray diffraction, NMR, IR and UV–Vis spectroscopy. By using iron(II) tetrafluoroborate hexahydrate the complexation with this ligand yields a 1-dimensional linear coordination polymer similar to the recently published chain compound (Inorg. Chem. 39 (2000) 1891) exhibiting …