Bis(azido-κN)bis(quinolin-8-amine-κ2N,N′)iron(II) monohydrate

IUCrData Pub Date : 2025-03-01 Epub Date: 2025-03-19 DOI:10.1107/S2414314625002354

Fatima Setifi , Zouaoui Setifi , Hans Reuter , Mohammad Hadi Al-Douh , Abderezak Addala

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Abstract

In the title compound, [Fe(N₃)₂(C₉H₈N₂)₂]·H₂O or [Fe(N₃)₂(AQ)₂]·H₂O, the Fe^II ion is distorted octahedrally coordinated by two azide ions in a cis position with a syn orientation, while the two amino groups of the AQ ligands are in a cis and the two pyridiyl N atoms are in a trans position.

In the hydrated title complex, [Fe(N₃)₂(AQ)₂]·H₂O (AQ is 8-aminoquinoline, C₉H₉N₂), the Fe^II ion is coordinated in a distorted octahedral 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)_cis [75.25 (6)–99.91 (7)°] and 〈(N—Fe—N)_trans [159.98 (7)–170.62 (7)°] bond angles. The water molecule acts as the acceptor of hydrogen bonds with the NH₂ groups of both AQ-ligands in one and the same molecule, 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 molecules in the b-axis direction.

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Bis(叠氮基-κN)双(quinolin-8-amine -κ2 N, N’)铁(II)一水

在标题化合物[Fe(N3)2(C9H8N2)2]·H2O或[Fe(N3)2(AQ)2]·H2O中，FeII离子被两个叠氮化物离子扭曲成八面体配位，并在顺式方向上配位，而AQ配体的两个氨基为顺式，两个吡啶基N原子为反式。在水合标题配合物[Fe(N3)2(AQ)2]·H2O （AQ为8-氨基喹啉，C9H9N2）中，FeII离子由两个中性的螯合AQ配体和两个阴离子的单齿叠氮（N3−）离子以一种扭曲的八面体方式配位，呈顺式同步构型。在两个AQ配体上，吡啶基N原子彼此相反，氨基反转到叠氮配体上。不同的Fe-N键长度[2.112 (2)-2.231 (2)Å]和< (N-Fe-N)顺式[75.25(6)-99.91(7)°]和< (N-Fe-N)反式[159.98(7)-170.62(7)°]键角导致畸变。水分子作为同一分子中两个aq -配体的NH2基团氢键的受体，并作为相邻两个铁配合物的叠氮配体的γ-N和α-N原子的给体。此外，叠氮配体的两个末端N原子都与相邻铁配合物中的NH2基团形成氢键，因此氢键模式导致分子在b轴方向呈棒状排列。下载：下载高分辨率图片（345KB）下载：下载全尺寸图片

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