Sterically Encumbered Coordination Sites : Iron(II) Complexes of Jäger-type ligands with a Terphenyl Backbone

Title data

Dürrmann, Andreas ; Hörner, Gerald ; Wagner, Stefan ; Breuning, Matthias ; Weber, Birgit:
Sterically Encumbered Coordination Sites : Iron(II) Complexes of Jäger-type ligands with a Terphenyl Backbone.
In: Zeitschrift für anorganische und allgemeine Chemie. Vol. 647 (2021) Issue 22 . - pp. 2088-2097.
ISSN 1521-3749
DOI: https://doi.org/10.1002/ZAAC.202100196

Official URL:

Abstract in another language

A Schiff base-like ligand H2LTerPh featuring a para-terphenyl backbone was synthesized and converted in two steps to an octahedral iron(II) coordination polymer with 1,2-bis-(4-pyridyl)-ethylene as bridging ligand. Single crystal X-ray structure analysis was possible for the free ligand and the two octahedral iron(II) complexes. The Schiff base-like ligand features a [N2O2]2− coordination sphere for the metal center and the para-terphenyl backbone introduces intrinsic steric constraint. Characterization of the coordination polymer with an N4O2 coordination sphere around the iron center via magnetic measurements (SQUID) and room temperature Mössbauer spectroscopy revealed HS character in the entire temperature range investigated. Structure modelling with DFT calculations supports the findings, but support also the possibility of spin crossover in solution.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	Schiffbase; Iron·Spincrossover; Magneticproperties; Terpheny
Institutions of the University:	Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Professor Organic Chemistry > Professor Organic Chemistry - Univ.-Prof. Dr. Matthias Breuning Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry IV > Chair Inorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Professor Organic Chemistry
Result of work at the UBT:	Yes
DDC Subjects:	500 Science > 540 Chemistry
Date Deposited:	16 Sep 2021 12:06
Last Modified:	25 Apr 2022 09:21
URI:	https://eref.uni-bayreuth.de/id/eprint/67046