Inclusion propensity of new wheel-and-axle complexes based on Ru(II) half-sandwich units

In this contribution we present the rationalization of the solid-state packing of new organometallic materials with flexible dynamic frameworks, able to create pores on demand in order to accommodate small guest mols. Wheel-and-axle (WAA) systems are known to be good candidates to generate inclusion compds.: they are constituted by two bulky groups (wheels) connected by a rigid linear spacer (axle). Among the complexes synthesized, [(p-cymene)Ru(3-amino-4-hydroxybenzoic acid)I2] and {[(P-Cymene)RuCl2]2[4,4'-bis-(diphenylphosphino)biphenylene]} showed an interesting propension to generate solvate forms through solid-vapor processes; the flexibility of their cryst. networks and the robustness of the supramol. synthons involved are here analyzed.