Abstract: | The title complex, catena‐poly(2,2′‐bipyridine‐1κ2N,N′)tris(methanol‐2κO)(nitrato‐2κ2O,O′)‐μ‐cyanido‐1:2C:N‐cyanido‐1κC‐iron(II)neodymium(III)]‐di‐μ‐cyanido‐1:2′C:N;2:1′N:C] methanol solvate], {FeIINdIII(CN)4(NO3)(C10H8N2)(CH3OH)3]·CH3OH}n, is made up of ladder‐like one‐dimensional chains oriented along the c axis. Each ladder consists of two strands based on alternating FeII and NdIII centers connected by cyanide bridges. Furthermore, two such parallel chains are connected by additional cyanide cross‐pieces (the `rungs' of the ladder), which likewise connect FeII and NdIII centers, such that each Fe(CN)4(bipy)]2? unit (bipy is 2,2′‐bipyridine) coordinates with three NdIII centers and each NdIII center connects with three different Fe(CN)4(bipy)]2? units. In the complex, the iron(II) cation is six‐coordinated with a distorted octahedral geometry and the neodymium(III) cation is eight‐coordinated with a distorted dodecahedral environment. |