Two novel self-interpenetrating 3D iron(II) coordination frameworks: Synthesis, spectroscopic and structural characterizations with magnetic properties

•Two novel self-interpenetrating 3D Fe(II) coordination frameworks have been synthesized by using solvothermal technique.•Unprecedented AgCN species have affected to architectures and degree of interpenetration in 3D frameworks.•The stability and rigidity of both coordination frameworks are significantly supported by unique AgI ⋯ AgI interactions.

Two novel self-interpenetrating 3D Fe(II) coordination frameworks namely {Fe(4,4′-bpy)[Ag2(CN)3]2}n (I) and {Fe(4,4′-bpy)[Ag(CN)2]2[AgCN]2}n (II) have been synthesized and fully characterized. The 3D architectures and degree of interpenetration of these coordination frameworks were significantly affected by silver(I) cyanide species. The crystal structure of I presents 4-fold interpenetrating 3D framework with 4,4′-bpy and [Ag2(CN)3]− species. While, that of II constructed by 4,4′-bpy and two different silver(I) cyanide species, AgCN and [Ag(CN)2]− resulting to 2-fold interpenetrating 3D framework. The stability and rigidity of both coordination frameworks are mainly supported dominantly by AgI ⋯ AgI interactions. Their magnetic properties exhibit high spin behavior.

Graphical abstractTwo novel self-interpenetrating 3D Fe(II) coordination frameworks namely {Fe(4,4′-bpy)[Ag2(CN)3]2}n (I) and {Fe(4,4′-bpy)[Ag(CN)2]2[AgCN]2}n (II) have been synthesized and fully characterized. The 3D architectures and degree of interpenetration of these coordination frameworks were significantly affected by silver(I) cyanide species. Their magnetic properties exhibit high spin behavior.Figure optionsDownload full-size imageDownload as PowerPoint slide