Syntheses of new Fe/S clusters via reactions of Fe3(CO)12 and salts of heteroallyl anions of type [GCS2]− (G=Ph2PS, ArCOCH2, 2-C5H4NNH and 2-C3H2NSNH) with electrophiles
作者:Yao-Cheng Shi、Huan-Ren Cheng、Qiang Fu、Fei Gu、Yan-Hua Wu
DOI:10.1016/j.poly.2013.03.049
日期:2013.6
The reaction of Fe-3(CO)(12) and [NEt4][GCS(2)] with an electrophile CH3I in THF affords complex Fe-2(CO)(6)(mu-GC(S)SCH3) (G = Ph2PS, 1). The reaction of Fe-3(CO)(12) with PhCOCH2CS2H and NEt3 forms a red-brown solution of [HNEt3][Fe-2(CO)(6)(mu-GCS(2))] identified by IR and ESI-MS (G = PhCOCH2). The reactions of the solution with a series of electrophiles E-X such as CH3I, PhCH2Br and CH2=CHCH2Br produce complexes Fe-2(CO)(6) (mu-GC(S)SE) (2, E = CH3; 3, E = CH2Ph; 4, E = CH2CH=CH2). In the absence of NEt3, the reaction of Fe-3(CO)(12) and PhCOCH2CS2H gives complex Fe-2(CO)(6)(mu-S2C=CHCOPh) (5). The reaction of GCS(2)H with NEt3, Fe-3 (CO)(12) and CH3I yields complexes Fe-2(CO)(6)(mu-GC(S)SCH3) (G = 4-MeOC6H4COCH2, 6; G = C5H5FeC5H4COCH2, 7). The reaction of Fe(C5H4COCH2CS2H)(2), NEt3 and Fe-3(CO)(12) with CH3I affords complex Fe[(mu-C5H4COCH2C(S)SCH3)Fe-2(CO)(6)](2) (8). Unlike the above-mentioned cases, the reaction of Fe-3(CO)(12) and [HNEt3][GCS(2)] (G = 2-C5H4NNH, 2-C3H2NSNH) with PhCOCI generates the corresponding complexes Fe-2 (CO)(5)(mu-k(2)N,S:k(2)C-2-C5H4NN(COPh)CS)(mu-k(2)S-SCOPh) (9) and Fe-2(CO)(5)(mu-k(2)N,S:k(2)C-2-C3H2NSN(COPh) CS)(mu-k(2)S-SCOPh) (10). All new complexes have been characterized by elemental analysis, IR, H-1 and C-13 NMR spectroscopy as well as P-31 NMR spectroscopy for I, structures of them have been unequivocally determined by X-ray crystallography. (C) 2013 Elsevier Ltd. All rights reserved.