Please use this identifier to cite or link to this item:
|Title:||X-ray diffraction and Mössbauer spectrometry studies of molecular iron compounds||Authors:||Costa, B. F. O.
Greneche, J. M.
Silva, M. Ramos
Pereira, L. C. J.
|Keywords:||Trinuclear iron compounds; Mössbauer spectrometry; X-ray diffraction||Issue Date:||2007||Citation:||Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 580:1 (2007) 408-411||Abstract:||We have synthesized two new iron complexes that have been structural and magnetically characterized: diphenylguanidinium hexafluoroferrate and hexakisvaline-oxo-triiron(III) chloride. The former crystallizes as monomers with the fluoride ions six-coordinating the Fe(II) ion. Valine iron chloride is comprised of trinuclear complexes, with a well ordered oxo-centered carboxylate core and some disordered organic ligands. The magnetization curves show a paramagnetic behavior. The Mössbauer measurements as a function of temperature show a paramagnetic behavior at 300 K with two Fe sites (one quadrupolar doublet and a broad single line). At 4.2 K, besides the quadrupolar doublet there is a magnetic component which can be attributed to a slow relaxation phenomenon associated to these samples.||URI:||http://hdl.handle.net/10316/4364||Rights:||openAccess|
|Appears in Collections:||FCTUC Física - Artigos em Revistas Internacionais|
Show full item record
Files in This Item:
|file0be912b395a84dd8b6b58f2b6a901174.pdf||442.05 kB||Adobe PDF||View/Open|
Page view(s) 50291
checked on Feb 12, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.