Synthesis, crystal structure, and characterization of two new end-to-end 1D pseudohalide bridged manganese(III) complexes

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Transition Metal Chemistry Pub Date : 2024-01-27 DOI:10.1007/s11243-023-00569-0

Uttam Mandal, Corrado Rizzoli, Bikash Chakraborty, Srikanta Karmakar, Santanu Mandal, Debasis Bandyopadhyay

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Abstract

Two new manganese(III) Schiff base complexes MnL₂N₃ (1) and MnL₂NCS (2) where HL is 4-bromo-2-[(Z)-{[2-(thiophene-2-yl)ethyl]imino}methyl]phenol) were synthesized and characterized by UV–Vis. absorption spectra, FT-IR, TGA Analyses, and single-crystal X-ray diffraction technique. Structural studies reveal that the metal sites in complexes 1–2 are six-coordinated by two phenoxy oxygen atoms, two imine nitrogen atoms of two moles of Schiff base ligand, HL, and two nitrogen atoms from the azide or one nitrogen atom and one sulphur atom from thiocyanate ligands, respectively. The geometry around the metal center is twisted octahedral geometry with a MnN₄O₂ (for 1) and MnN₃O₂S (for 2) chromophore. Hirshfeld surfaces associated with 2D fingerprint plots have been used to analyze intermolecular interactions in crystal packing. Crystal packing of both complexes shows the interchain π⋯π stacking interactions between one-dimensional polymeric chains.

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两种新的端对端 1D 伪卤化物桥接锰（III）配合物的合成、晶体结构和表征

通过紫外-可见吸收光谱、傅立叶变换红外光谱、热重分析和单晶 X 射线衍射技术，合成了两种新的锰(III) 希夫碱配合物 MnL2N3 (1) 和 MnL2NCS (2)，其中 HL 为 4-溴-2-[(Z)-{[2-(噻吩-2-基)乙基]亚氨基}甲基]苯酚。结构研究表明，配合物 1-2 中的金属位点分别由两个苯氧基氧原子、两摩尔希夫碱配体 HL 的两个亚胺氮原子、叠氮化物的两个氮原子或硫氰酸盐配体的一个氮原子和一个硫原子配位而成。金属中心周围的几何形状是扭曲的八面体几何形状，发色团分别为 MnN4O2（1）和 MnN3O2S（2）。与二维指纹图谱相关的 Hirshfeld 表面被用来分析晶体堆积中的分子间相互作用。这两种复合物的晶体堆积显示了一维聚合物链之间的链间π⋯π堆积相互作用。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.