Setifi Fatima, Knaust Jacqueline M, Setifi Zouaoui, Touzani Rachid
Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria.
Department of Chemistry, Mathematics and Physics, Clarion University, 840 Wood Street, Clarion, PA 16214, USA.
Acta Crystallogr E Crystallogr Commun. 2016 Mar 8;72(Pt 4):470-6. doi: 10.1107/S2056989016003662. eCollection 2016 Apr 1.
The search for new mol-ecular materials with inter-esting magnetic properties, using the pseudohalide azide ion and di-2-pyridyl-amine (dpa, C10H9N3) as a chelating ligand, led to the synthesis and structure determination of the title compound, [Co(N3)2(dpa)2]2SO4·2H2O. The crystal structure comprises discrete Co(dpa)2(N3)2 cations, sulfate anions, as well as H2O solvent mol-ecules. The Co(III) cations display a slightly distorted octa-hedral coordination sphere defined by two N atoms from azide anions and four N atoms from the pyridyl rings of two dpa ligands. In the crystal, extensive C-H⋯O, N-H⋯O, and O-H⋯O inter-actions result in supra-molecular sheets that lie parallel to the ab plane. The sheets are further linked through O-H⋯N inter-actions between the water mol-ecules of one sheet and azide anions of another sheet, forming a supra-molecular framework.
利用拟卤化物叠氮离子和二 - 2 - 吡啶基胺（dpa，C₁₀H₉N₃）作为螯合配体来寻找具有有趣磁性的新型分子材料，从而合成并确定了标题化合物[Co(N₃)₂(dpa)₂]₂SO₄·2H₂O的结构。晶体结构包含离散的Co(dpa)₂(N₃)₂阳离子、硫酸根阴离子以及H₂O溶剂分子。Co(III)阳离子呈现出略微扭曲的八面体配位环境，由叠氮阴离子的两个N原子和两个dpa配体吡啶环的四个N原子界定。在晶体中，广泛的C - H⋯O、N - H⋯O和O - H⋯O相互作用导致形成与ab平面平行的超分子片层。这些片层通过一片层的水分子与另一片层的叠氮阴离子之间的O - H⋯N相互作用进一步连接，形成超分子框架。
