Iron propyltetrazole

Photoinduced spin-related phenomena are a particularly important field of the solid-state photophysics, because fast spin switching is a prospective basis for applications in the field of spintronics. An illustrative example is the production of the metastable state of the iron propyltetrazole (ptz) complex [Fe(ptz)6](BF4)2 by laser light-induced excited spin-state trapping (LIESST) and the determination of the resulting structure by steady-state X-ray photodiffraction [68]. In another example, steady-state X-ray photodiffraction at cryogenic temperatures was successfully utilized to study photoinduced phase transition due to spin crossover in the tris(a-picolylamine)iron(II) complex [69]. The phase transition is accompanied by... 

Fe(ptz)6] (BF4)2 and [Zni Fej.(ptz)6] (BF4,)2. The solid iron(II) complex of the unidentate ligand ptz = 1-propyltetrazole shows a reasonably sharp spin-state transition at about 130 K [112]. Optical excitation into the spin-allowed -> absorption band produces via LIESST the HS T2 state which remains trapped at temperatures below 50 K. Relaxation of the metastable J2 state to the LS state has been studied by following the changes of... 

S. Decurtins, P. Gutlich, C.P. Kohler, H. Spiering, A. Hauser, Light-induced excited spin state trapping in a transition-metal complex the hexa-l-propyltetrazole-iron(II) tetrafluoroborate spin crossover system. Chem. Phys. Lett. 105, 1 (1984)... 

L. Wiehl, Structures of hexakis(l-propyltetrazole)iron(II) bis(tetrafluoroborate), [Ee(CHN4C3H7)6](BE4)2, hexakis(l-methyltetrazole)iron(II) bis(tetrafluoroborate), [Ee(CHN4CH3)6](BE4)2, and the analogous perchlorates. Their relation to spin crossover behaviour and comparison of Debye-Waller factors from stracture determination and Mossbauer spectroscopy. Acta Cryst. B 49, 289-303 (1993)... 

---