Lamb Mossbauer factor of the spin crossover compound (Fe(BPTN)(NCS)2)
- 1 January 1995
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 7 (4) , 777-783
- https://doi.org/10.1088/0953-8984/7/4/008
Abstract
The spin crossover transition curve of the compound (Fe(BPTN)(NCS)2) (BPTN=N,N'-bis(2-pyridylmethyl)-1,3-propanediamine) was measured by Mossbauer spectroscopy and susceptibility measurements. The compound was prepared by two different methods yielding a fine powder (a) and single crystals of approximately 0.5 mm in size (b). The transition temperatures T1/2 of the gradual transitions are 182 K (a) and 186 K (b). Within experimental accuracy the transition curves derived from the fractional absorption areas of the Mossbauer spectra are the same as derived from susceptibility measurements so that there is no indication for different Lamb Mossbauer factors of the high-spin (HS) and low-spin (LS) states as reported in the literature. The observation of quite different Debye temperatures Theta D at temperatures where the compounds are completely converted to the HS and LS state is discussed.Keywords
This publication has 9 references indexed in Scilit:
- Lattice dynamics of some spin-crossover complexes: Mossbauer and VTFTIR measurementsJournal of Physics: Condensed Matter, 1989
- Anomalous pressure dependence of the Lamb-Mössbauerf-factor in the spin crossover system [Fe(2-pic-ND2)3]Cl2·EtODHyperfine Interactions, 1987
- The influence of the lattice on the spin transition in solids. Investigations of the high spin ag low spin transition in mixed crystals of [FexM1−x(2−pic)3]C12·MeOHJournal of Physics and Chemistry of Solids, 1987
- Structure determination and investigation of the high-spin .tautm. low-spin transition of tris[2-(aminomethyl)pyridine]iron(2+) dibromide.monoethanolInorganic Chemistry, 1986
- Chemistry of heterocyclic compounds. 104. "Obstacle effect" in palladium(II) complexes of tetraamine ligands with terminal pyridyl or picolyl residuesInorganic Chemistry, 1985
- Light-induced excited spin state trapping in a transition-metal complex: The hexa-1-propyltetrazole-iron (II) tetrafluoroborate spin-crossover systemChemical Physics Letters, 1984
- Spin Equilibria in Some New cis-Diisothiocyanato Iron(II) Complexes with Tetradentate Ligands of the Bis-(2-pyridylmethyl) Diamine Type.Acta Chemica Scandinavica, 1984
- Spin Equilibria in Octahedral Iron(II) Complexes with Some Hexadentate Ligands of the Tetrakis(2-pyridylmethyl)ethylenediamine Type and a Spectral Correlation With Their Cobalt(III) and Nickel(II) Analogs.Acta Chemica Scandinavica, 1981
- An explanation of unusual properties of spin-crossover ferric complexesJournal of the American Chemical Society, 1980