Abstract
In the hydrated title complex, [Fe(N(3))(2)(AQ)(2)]·H(2)O (AQ is 8-amino-quinoline, C(9)H(9)N(2)), the Fe(II) ion is coordinated in a distorted octa-hedral manner by two neutral, chelating AQ ligands and two anionic, monodentate azide (N(3) (-)) 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) (cis) [75.25 (6)-99.91 (7)°] and 〈(N-Fe-N) (trans) [159.98 (7)-170.62 (7)°] bond angles. The water mol-ecule acts as the acceptor of hydrogen bonds with the NH(2) 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 NH(2) 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.