ANSA-FERROCENES WITH BOTH TRISULFIDE AND HYDROCARBON STRAPS

Described are two new ferrocenes, each containing two different straps linking the pair of cyclopentadienyl rings. The first, Fe(C5H3)(2)-1, 1'-S-3-3,3'-C2Me4, was characterized by single-crystal X-ray diffracti on and shown by H-1 NMR studies to consist of two slowly interconverti ng conformers, one of which crystallized. The second new compound, Fe( C5H3)(2)-1,1'-S-3-3,3'-C3H6, is shown to exist as four conformers that differ in terms of the orientation of the trisulfido and the trimethy lene linker groups.