Hochsubstituierte decabenzylmetallocene: Synthese und strukturaufklärung von deca(4-acetylbenzyl)ferrocen Fe[C5(CH2C6H4C(O)CH3)5]2

Decabenzylferrocene reacts with acetyl chloride in the presence of Al2Cl6 to form Deca(4-acetylbenzyl)ferrocene Fe[C5-(CH2C6H4C(O)CH3)5]2 (2). The X-ray structure confirms the all-para-substitution of the ten benzylligands by the acetyl group. 2 crystallizes in the space group P21n with a = 1479.8(3) pm, b = 1700.9(4) pm, c = 1618.7(8) pm, β = 89.99(2)° and V = 4074(2) × 10−30 m3. The final refinement resulted in R = 0.0936 for 3983 observed reflections with Fo ≥ 2σ(Fo).