Bis(azido-κN ¹)bis-(2,2'-di-pyridyl-amine-κ² N ¹,N ^1')iron(II) monohydrate.

IUCrData Pub Date : 2024-11-22 eCollection Date: 2024-11-01 DOI:10.1107/S2414314624011167

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

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Abstract

In the hydrated title complex, [Fe(dpa)₂(N₃)₂]·H₂O (dpa is 2,2'-di-pyridyl-amine, C₁₀H₉N₃), the Fe^II ion is coordinated in a distorted octa-hedral manner by two neutral, chelating dpa ligands and two anionic, monodentate azide (N₃ ^-) ions in a cis-configuration. Distortion results from different Fe-N bond lengths [2.1397 (13)-2.2254 (12) Å] and (N-Fe-N) _cis [80.12 (4)-96.72 (5)°] and (N-Fe-N) _trans [166.73 (4)-176.62 (5)°] bond angles. Hydrogen bonds exist between two symmetry-related water mol-ecules as hydrogen donors to the γ-N atoms of azido ligands of two adjacent iron complexes and as acceptors from the amide group of the dpa ligands of two additional iron complexes. The hydrogen-bonding pattern results in eight-membered ⋯H-O-H⋯N⋯ rings and a band-like arrangement of the mol-ecules involved. Additional, weaker hydrogen bonds between the α-N atom of the second azido ligand as acceptors and the amide groups of the second dpa ligands as donors cross-link neighboring bands to layers extending parallel to (001).

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在水合标题配合物[Fe(dpa)2(N3)2]-H2O（dpa 是 2,2'-二吡啶基-胺，C10H9N3）中，FeII 离子由两个中性螯合 dpa 配体和两个阴离子单齿叠氮化物 (N3 -) 离子以顺式配位以扭曲的八面体方式配位。不同的 Fe-N 键长 [2.1397 (13)-2.2254 (12) Å] 和 (N-Fe-N) 顺式 [80.12 (4)-96.72 (5)°] 和 (N-Fe-N) 反式 [166.73 (4)-176.62 (5)°] 键角导致了畸变。两个对称性相关的水分子之间存在氢键，它们是两个相邻铁络合物叠氮配体 γ-N 原子的氢供体，也是另外两个铁络合物 dpa 配体酰胺基团的氢受体。这种氢键模式产生了八元⋯H-O-H⋯N⋯环以及相关分子的带状排列。作为受体的第二个叠氮配体的 α-N 原子和作为供体的第二个 dpa 配体的酰胺基团之间的其他较弱氢键将邻近的带交联成平行于 (001) 延伸的层。

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0.30

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