Lattice dynamics of some spin-crossover complexes: Mossbauer and VTFTIR measurements
- 2 October 1989
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 1 (39), 7103-7112
- https://doi.org/10.1088/0953-8984/1/39/022
Abstract
Temperature-dependent Mossbauer spectroscopy and variable temperature Fourier transform infrared techniques were employed to follow the spin conversion of Fe(BPTN)(NCS)2 and Fe(TPA)(NCS)2 complexes. The hyperfine interaction parameters and Debye-Waller factors were determined using the Mossbauer effect. The complexes show gradual HS to or from LS transition in the temperature range 4.2-300 K. The lattice dynamical properties at the metal sites in the 1A1 state were observed to be significantly different from those in the 5T2 configuration. It has been demonstrated that detailed f-factor measurements may be essential for accurate estimation of the spin-conversion function of such complexes.Keywords
This publication has 17 references indexed in Scilit:
- Spin crossover in iron(II)-complexesPublished by Springer Nature ,2007
- The nature of spin-state transitions in solid complexes of iron(II) and the interpretation of some associated phenomenaChemical Reviews, 1985
- Thiocyanate-bridged transition metal polymers. 2. Investigation of a structural phase transition in polymeric (bipyridyl)iron(II) thiocyanate, Fe(bpy)(NCS)2Inorganic Chemistry, 1982
- Energy of migration of monovalent ions in NaCl: An experimental and theoretical studyJournal of Physics and Chemistry of Solids, 1977
- Spin Transitions in six-coordinate iron(II) complexesCoordination Chemistry Reviews, 1976
- Thermally induced incomplete high-spin (5T2) ⇌ low-spin (1A1) transition in solid bis[2-(2-pyridylamino)-4-(2-pyridyl) thiazolato]iron (II)Chemical Physics, 1974
- Temperature dependence of Debye-Waller factors at a cooperative high-spin (5T2) ⇌ low-spin (1A1) transition in dithiocyanatobis(2,2'-bipyridyl)iron(II)Physics Letters A, 1973
- 5T2-1A1 Spin transition and residual paramagnetism in bis(2,4-bis(2-pyridyl)thiazole)iron(II) complexes: mössbauer effect and magnetismChemical Physics, 1973
- Slow Electronic Relaxation in T52−A11 Spin Equilibria of Tris(2-methyl-1,10-phenanthroline)Iron(II) Complexes: A Mössbauer Effect StudyThe Journal of Chemical Physics, 1972
- Reversible quintet-singlet transition in dithiocyanato-bis(2,2'-dipyridyl)iron(II)Journal of the American Chemical Society, 1968