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

The reaction of the P-n ligand complex [Cp* Fe(eta(5)-P-5)] (1: Cp* = eta(5)-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(mu(3), eta(5:1:1)-P-5)}(mu, eta(1:1)-C10H8N2)](n) (2 and 3) and the coordination polymer [(CuCl)(2){Cp* Fe(mu(3), eta(5:1:1)-P-5)}( mu, eta(1:1)-C12H10N2)](n) (4) with isomeric square (2 and 3) and honeycomb (4) layer topologies.