O-Alkylthio- and O-alkylselenooxalate iron complexes: Structures of CpFe(CO)2ECOCO2Me and [CpFe(CO)2ECO]2
摘要:
When the iron sulfide complexes (mu-S-x)[CpFe(CO)(2)](2) (x = 2,3) are treated with O-alkyl oxalyl chlorides ROCOCOCl the complexes CpFe(CO)(2)SCOCO2R (1) [R = Me (a), Et (b)] are obtained. Similarly, the complexes CpFe(CO)(2)SeCOCO2R (2) are obtained from the analogous iron selenide (g-Se)[CpFe(CO)(2)](2) reaction with the same reagents. Treatment of the iron selenide with half equivalent of oxalyl chloride produces the dimeric complex [CpFe(CO)(2)SeCO](2) (3). The new complexes, 1, 2 and 3, have been characterized by elemental analyses, IR and H-1 NMR spectroscopy. The solid state structures of 1a, 2a, 3 and [CpFe(CO)(2)SCO](2) (4) were determined by an X-ray crystal structure analysis. (c) 2006 Published by Elsevier B.V.