The 3-coordinate 12 VE iron(II) benzyl complex [(nacnac)Fe(CH2Ph)] reacts with B(C6F5)3 to yield a paramagnetic contact ion pair with an η2-(o,m)-[PhCH2B(C6F5)3] anion, which was characterised by X-ray diffraction.
                                    3 配位 12 VE 
铁(II)苄基络合物[(nacnac)Fe(CH2Ph)]与 B(
C6F5)3 反应生成一个顺磁接触离子对,该离子对带有一个 Î-2-(o,m)-[PhCH2B(    )3]阴离子,并通过 X 射线衍射对其进行了表征。