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Updated: May 15, 2025

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
Bis(azido-κN)bis-(quinolin-8-amine-κ2 N,N')iron(II) monohydrate
Fatima Setifi1, Zouaoui Setifi2,1, Hans Reuter3
1Laboratoire de Chimie Ingénierie Moléculaire et Nanostructures (LCIMN) Université Ferhat Abbas Sétif 1 Sétif 19000 Algeria.
Abstract:
In the hydrated title complex, [Fe(N3)2(AQ)2]·H2O (AQ is 8-amino-quinoline, C9H9N2), the FeII ion is coordinated in a distorted octa-hedral manner by two neutral, chelating AQ ligands and two anionic, monodentate azide (N3 -) ions in a syn,cis-configuration. From the two AQ ligands, the pyridyl N atoms are opposite to each other and the amino groups trans to the azide ligands. Distortion results from different Fe-N bond lengths [2.112 (2)-2.231 (2) Å] and 〈(N-Fe-N) [75.25 (6)-99.91 (7)°] and 〈(N-Fe-N) [159.98 (7)-170.62 (7)°] bond angles. The water mol-ecule acts as the acceptor of hydrogen bonds with the NH2 groups of both AQ-ligands in one and the same mol-ecule, and as donor to the γ-N and α-N atoms of the azido ligands of two adjacent iron complexes. In addition, both terminal N atoms of the azido ligands are involved in hydrogen bonds with NH2 groups in neighboring iron complexes, so that the hydrogen-bonding pattern leads to a rod-like arrangement of the mol-ecules in the b-axis direction.
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