کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1327424 | 977481 | 2006 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Syntheses, structures and reactivities of diindenyl-coordinated diiron bridging carbene complexes Syntheses, structures and reactivities of diindenyl-coordinated diiron bridging carbene complexes](/preview/png/1327424.png)
Compound [Fe2(μ-CO)2(CO)2(η5-C9H7)2] (1) reacts with aryllithium reagents, ArLi (Ar = C6H5, p-CH3C6H4, p-CF3C6H4) followed by alkylation with Et3OBF4 to give the diindenyl-coordinated diiron bridging alkoxycarbene complexes [Fe2{μ-C(OC2H5)Ar}(μ-CO)(CO)2(η5-C9H7)2] (2, Ar = C6H5; 3, Ar = p-CH3C6H4, 4, Ar = p-CF3C6H4). Complex 4 reacts with HBF4 · Et2O at low temperature to yield cationic bridging carbyne complex [Fe2(μ-CC6H4CF3-p)(μ-CO)(CO)2(η5-C9H7)2]BF4 (5). Cationic 5 reacts with NaBH4 in THF at low temperature to afford diiron bridging arylcarbene complex [Fe2{μ-C(H)C6H4CF3-p}(μ-CO)(CO)2(η5-C9H7)2] (6). The reaction of 5 with NaSC6H4CH3-p under the similar conditions gave the bridging arylthiocarbene complex [Fe2{μ-C(C6H4CF3-p)SC6H4CH3-p}(μ-CO)(CO)2(η5-C9H7)2] (7). Complex 5 can also react with carbonylmetal anionic compounds Na[M(CO)5(CN)] (M = Cr, Mo, W) to produce the diiron bridging aryl(penta-carbonylcyanometal)carbene complexes [Fe2{μ-C(C6H4CF3-p)NCM(CO)5}(μ-CO)(CO)2(η5-C9H7)2] (8, M = Cr; 9, M = Mo; 10, M = W). The structures of complexes 4, 6, 7, and 10 have been established by X-ray diffraction studies.
A new type of diindenyl-coordinated diiron bridging alkoxycarbene complexes 2–4 were synthesized, and the reactions of the cationic bridging carbyne complex of 4 with nucleophiles involving carbonylmetal anions were investigated, which afforded a series of the new diindenyl-coordinated diiron bridging carbene complexes.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 691, Issue 22, 1 November 2006, Pages 4641–4651