Thermal isomerization of η6-arene ferradicarbolllides. Experimental proof for isolobal relation between (η6-arene)Fe and (η5-cyclopentadienyl)Co cluster units†
Abstract
The heating of selected [1-(η6-arene)-closo-1,2,3-FeC2B9H11] complexes resulted in the thermal rearrangement and isolation of the corresponding 1,2,4-, 1,2,7-, and 1,2,8-cage isomers. Demonstrated here is a similar rearrangement and the NMR behaviour for isostructural [1-(η5-cyclopentadienyl)-closo-1,2,3-CoC2B9H11] compounds