Structure diversity of silver(I) [1,1′-bis(diphenylphosphino)cobaltocenium] complexes: Effect of counteranions

Single crystal X-ray structural characterizations are recorded for an array of adducts of the form {AgX:[dppc][PF6]}n (n = 1 or 2), [dppc][PF6] = 1,1′-bis(diphenylphosphino)cobaltocenium hexafluorophosphate, X = Cl, Br, NO3, NO2, C6H5CO2, CF3CO2. Synthetic procedures for all adducts are reported. All compounds have been fully characterised by elemental analysis and spectroscopic techniques. The structures in the solid state were found to depend on the nature of the counterion, for X = NO3, NO2, the complex being monomeric {[dppc-P,P′]Ag(NO3)2} or {[dppc-P,P′]Ag(NO2)}, for X = Cl, Br, C6H5CO2, CF3CO2, the complex is a dimer.