Synthesis and Electronic State of Four-Legged MX-Ladder Complex, [Pt(en)(bpy)I] sub(4)(NO sub(3)) sub(8) times 16H sub(2)O (en: ethylenediamine, bpy: 4,4'-bipyridine)

Recent years, the electronic system of the ladder lattice has attracted much attention due to a variety of physical properties strongly depending on the number of legs within a ladder [1]. In this work, we focused on the control of the three-dimensional shape of one-dimensional (1-D) halogen-bridged transition-metal complex (MX-chain) which has structural flexibility by substitution of their structural components, such as metal ions, organic ligands, and counterions resulting in various electronic states of the 1-D chain [2]. We successfully synthesized four-legged ladder complex, [Pt(en)(bpy)I] sub(4)-(NO sub(3)) sub(8) times 16H sub(2)O (1) (en: ethylenediamine, bpy. 4,4'-bipyridine). Moreover, we clarified its electronic state.