Preparation And Deprotonation of Certain Pi-Arene-Pi-Cyclopentadienyliron(11) Salts
Preparation And Deprotonation of Certain Pi-Arene-Pi-Cyclopentadienyliron(11) Salts
Hendrickson, William Arthur
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m.p. reported). NMR (acetone-d,): cyclopentadienyl - 5.22 (s,5), coordinated arene - 6.47 (s,5), uncoordinated arene - 7.37 (s,5), methylene - 4.25 (s,2). 'If the product is not completely dry at this point, oiling will occur and good recrystal 1 ized product is almost impossible to obtain. If dichloromethane is used to dissolve the salt, any water remaining is easily removed by using a separatory funnel. The use of dichloro- methane allows a more rapid work-up as it obviates the tedious step o...f completely drying out the product before recrystal 1 izat ion. 63 IR (KBr): 3128 (m) , 1603 (w) , 1532 (w) , IA98 (m) . 1^68 (m) , 1^58 (m) , lif25 (s), 8i»5 (vs, broad), 7^0 (5), 710 (s) , 559 (s) , '♦97 (s) , 477 (s) cm . 27 n^-Fluorene-n^-cycl open tad ienyl i ron(l I) Hexaf luorophosphate Ferrocene (8.0 g, 0.0't3 mol), fluorene (10.0 g, O.O603 mol), alumin- um chloride powder (11. 65 g, 0.0875 mol), aluminum powder (3.29 g, 0.122 a mol), and decahydronaphthalene {kO ml) were added to the reaction ves- sel and stirred at 155°C.
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