Neutral two-dimensional organometallic-organic hybrid polymers based on pentaphosphaferrocene, bipyridyl linkers and CuCl

The reaction of the P_n ligand complex [Cp∗Fe(η⁵-P₅)] (1: Cp∗ = η⁵-C₅Me₅) with CuCl in the presence of 4,4′-bipyridine or 1,2-di(4-pyridyl)ethylene leads to the formation of three unprecedented neutral 2D organometallic-organic hybrid networks, the constitutional isomers [Cu₂Cl₂{Cp∗Fe(μ₃,η^5:1:1-P₅)}(μ,η^1:1-C₁₀H₈N₂)]_n (2 and 3) and the coordination polymer [(CuCl)₂{Cp∗Fe(μ₃,η^5:1:1-P₅)}(μ,η^1:1-C₁₂H₁₀N₂)]_n (4) with isomeric square (2 and 3) and honeycomb (4) layer topologies.