Synthesis, Structural Characterization, and Magnetic Properties of Two Iron(II) Complexes With Triazole- and Imidazole-Related Ligands. Issue 11 (1st November 2016)

• Record Type: Journal Article
• Authors: Liu, Qing-Ling; Yang, Li-Jing; Luo, Yang-Hui; Wang, Wei; Ling, Yang; Sun, Bai-Wang
• Is Part Of: Synthesis and reactivity in inorganic, metal-organic, and nano-metal chemistry. Volume 46:Issue 11(2016)
• Page Start: 1725
• Page End: 1734
• Publication Date: 2016-11-01
• Subjects: iron (II) complex -- crystal structure -- Hirshfeld surface -- magnetic properties; Inorganic compounds -- Synthesis -- Periodicals; Organic compounds -- Synthesis -- Periodicals; Organometallic compounds -- Synthesis -- Periodicals; Reactivity (Chemistry) -- Periodicals; Nanostructured materials -- Periodicals; 541.39
• DOI: 10.1080/15533174.2015.1137056
• Languages: English
• ISSNs: 1553-3174

Abstract

Abstract : Two new mononuclear iron (II) coordination complexes: Fe(L1 )2 (SCN)2 (1, L1 :5-dimethylether-4-(4-methylphenyl)-3-(2-pyridinyl)-1, 2, 4-triazole) and Fe(L2 )3 (ClO4 )2 (2, L2 :1-ethyl acetate-2-(2-pyridinyl)-imidazole), for the exploration of spin-crossover compounds have been synthesized and characterized. Structural analysis revealed that the framework of complex1 is featured with 1-D chain structure connected by weak π···π interactions between the adjacent L1 ligands, while complex2 featured with various kinds of weak intermolecular hydrogen bonding interactions between Fe(L2 )3 2+ cation and ClO4 − anion, which lead to a close crystal packing. The intermolecular interactions have shown a significant influence on the physical properties, and magnetic measurements of complexes1 and2 in the solid state at the room temperature revealed that the weak intermolecular interactions in1 resulted in HS (high-spin) state, while the strong interactions in2 lead to LS (low-spin) state over the whole temperature range.