Coordination pillared layers using a dinuclear Mn(V) complex as a secondary building unit

Coordination pillared layers (CPLs) are among the most attractive framework compounds displaying unique porous properties depending on their components. Three-dimensional Hofmann-type porous coordination polymers consisting of pillared cyanide-bridged layers with a tetracyanometallate anion [MII(CN)4]2− (M = Ni, Pd, Pt) as a secondary building unit (SBU) are the representative functional CPLs. In this paper, we report a new synthetic strategy for constructing CPLs using a new SBU linking two tetracyanometallate complexes, [{MnV(N)(CN)4}2(bpy)]4− (bpy = 4,4′-bipyridyl). The [MnV(N)(CN)4]2− part in the SBU permits expansion of the 2-D cyanide-bridged layers and the pillar part bpy simultaneously links the layers. Two CPLs, [MII(bpy){MnV(N)(CN)4(bpy)1/2}]·MeCN·H2O (M = Zn, Cd), were synthesized by applying the SBU and characterized by X-ray single-crystal structural analysis and gas adsorption measurements.

New coordination pillared layers have been prepared using a new secondary building unit (SBU) linking two tetracyanometallate complexes, [{MnV(N)(CN)4}2(bpy)]4− (bpy = 4,4′-bipyridyl). The [MnV(N)(CN)4]2− part in the SBU permits expansion of the 2-D cyanide-bridged layers and the pillar part bpy simultaneously links the layers, which forms the expected 3-D porous structure rationally.Figure optionsDownload as PowerPoint slide