Ie. Buys et al., PHOTOCHEMICAL-REACTIONS OF [CIS-FE(H)(2)(ME(2)PCH(2)CH2(P)ME(2))(2)] WITH THIOPHENES - INSERTION INTO C-H AND C-S BONDS, Journal of the Chemical Society, Chemical Communications, (5), 1994, pp. 557-558
Photolysis of [cis-Fe(H)(2)(dmpe)(2)] [dmpe = 1,2-bis(dimethylphosphin
o)ethane] in the presence of simple thiophenes gives products formed b
y insertion of the iron centre into both C-H and C-S bonds; the crysta
l structure of [Fe(SCMeCHCHCH)(dmpe)(2)] is a planar 'ferrathiacycle'
but bond lengths and H-1 NMR spectroscopy indicate that this ring is b
est described as a localised diene structure rather than a 'ferrathiab
enzene' with delocalised pi-system.