New aspects of the high spin-low spin transition in tris(2-methyl-1,10-phenanthroline)iron(II) perchlorate

Moessbauer-effect study of the thermally induced spin transition in tris(2-picolylamine)iron(II) chloride. Dilution effect in mixed crystals of [FexZn1-x(2-pic)3]Cl2.C2H5OH (x = 0.15, 0.029, 0.0009)

“…to the experimental values of AEq. The quantities of eq 2 have the usual meaning as described, e.g., in ref 16 and 17. The "best-fit values" for the parameters ea, er, ac2, and 2 (covalency factors taking care of the reduction of the free ion radial expansion O~3>3d0 and the free ion spin-orbit coupling constant 0 upon complex formation), and AEqc (temperature-independent contribution to the quadrupole splitting AEq)…”

Rapid Cooling Experiments and Use of an Anionic Nuclear Probe to Sense the Spin Transition of the 1D Coordination Polymers [Fe(NH2trz)3]SnF6⋅n H2O (NH2trz=4‐amino‐1,2,4‐triazole)

“…[61][62][63][64][65] Such transitions, which were detected by DSC or mSR, are generally decoupled from the electronic transition. The control of such transitions was recently proposed as a useful tool for the elaboration of a new range of molecular switches for memory or sensing applications.…”

Rotational order–disorder and spin crossover behaviour in a neutral iron(ii) complex based on asymmetrically substituted large planar ionogenic ligand

“…The possible influence of order–disorder of the counterion in the SCO of the complex [Fe II (2-methyl-1,10-phenanthroline) 3 ](ClO 4 ) 2 was first suggested from Mössbauer data. 17 This fact became more evident in a subsequent study of the complex [Fe II (2,2′-bi-2-imidazoline) 3 ](ClO 4 ) 2 , 18 and then later for cationic complexes of the [Fe(2,6-di(pyrazol-1-yl)pyridine) 2 ] 2+ family. 19…”

“…The possible influence of order-disorder of the counterion in the SCO of the complex [Fe II (2-methyl-1,10-phenanthroline) 3 ] (ClO 4 ) 2 was first suggested from Mössbauer data. 17 This fact became more evident in a subsequent study of the complex [Fe II (2,2′-bi-2-imidazoline) 3 ](ClO 4 ) 2 , 18 and then later for cationic complexes of the [Fe(2,6-di( pyrazol-1-yl)pyridine) 2 ] 2+ family. 19 The influence of orientational order-disorder of solvents included in the lattice on the SCO was also discussed quite early for the complexes [Fe II (2-picolylamine) 3 ]Cl 2 •EtOH 20 and [Fe II (cis-1,2-bis(diphenylphosphino)ethylene)]X 2 •2S with S = (CH 3 ) 2 CO and X = Cl, 21 and CHCl 3 and X = Br.…”