ChemInform Abstract: Indirect Two‐Dimensional Heteronuclear NMR Spectroscopy. (31P,57Fe) Spectra of Organoiron Complexes

Reaction of the sulfur-coordinated thiophene in Cp*(CO)2Re(SC4H4) to give the thiophene-bridged Cp*(CO)2Re(.mu.-SC4H4)Fe(CO)3

“…Slow evaporation of the solvent from the yellow band gives light yellow, air-stable crystals of Cp*(CO)2Re(T) (1) (38% yield), which is characterized by its elemental analyses and IR, NMR, 13C NMR, and mass spectra;10 these data support its formulation as a complex with an S-coordinated thiophene. Although there are no crystal structures of simple thiophene complexes, the sulfur in 1 is presumed to be pyramidal, as found in the chelated thiophene complex8 (C5H4CH2C4H3S)Ru(PPh3)2+ and in several thiaporphyrin complexes,11 and the thiophene may be folded slightly (12-15°)11 along a line from C(2) to C (5).…”