357262-28-3Relevant academic research and scientific papers
Synthesis of double and quadruple butterfly Fe/E cluster complexes via a new type of selenium-centered anions (μ-RE). See abstract
Song, Li-Cheng,Yang, Jing,Hu, Qing-Mei,Wu, Qiang-Jin
, p. 3293 - 3298 (2008/10/08)
The [Et3NH]+ or [MgBr]+ salts of anions [(μ-RE)(μ-CO)Fe2(CO)6]- (1, E = S, Se, Te) reacted with (μ-Se2)Fe2(CO)6 followed by treatment of the [Et3NH]+ or [MgBr]+ salts of the intermediate selenium-centered anions (μ-RE)(μ-Se-)[Fe2(CO)6]2 (μ4-Se) (3) with monohalide PhCH2Br or MeI to give a series of double butterfly Fe/E cluster complexes (μ-RE)(μ-R1Se)-[Fe2(CO)6]2 (μ4-Se) (4, RE = EtS, R1 = PhCH2; 5, t-BuS, PhCH2; 6, p-MeC6H4Se, PhCH2; 7 p-MeC6H4Se, Me; 8, p-MeC6H4Te, PhCH2; 9, p-MeC6H4Te, Me). Similarly, reaction of the in situ prepared [Et3NH]+ salt of the intermediate selenium-centered anion (μ-t-BuS)(μ-Se-)-[Fe2(CO)6]2 (μ4-Se) with dihalide 1,2-(BrCH2)2C6H4 or 1,3-(BrCH2)2-5-MeC6H3 afforded quadruple butterfly Fe/E cluster {(μ-t-BuS){Fe2(CO)6]2 (μ4-Se)}2 (μ-1-SeCH2C6H4CH2Se-2-μ (10) or double butterfly Fe/E cluster (μ-t-BuS)[(μ-1-SeCH2-3-BrCH2-5-MeC6H 3)[Fe2(CO)6]2 (μ4-Se) (11) and quadruple butterfly Fe/E cluster {(μ-t-BuS)[Fe2(CO)6]2 (μ4-Se)}2(μ-1-SeCH2-5- MeC6H3CH2Se-3μ) (12), respectively. All the new products 4-11 have been characterized by elemental analysis, IR 1H and 77Se NMR spectroscopy, and for 4, 7, and 9 single-crystal X-ray diffraction techniques.
