Sodium metal reduction of RECl2 (E = Ga, In; R = –C6H3-2,6-(2,4,6-i-Pr3C6H2)2) with Cp2HfCl2 gives Cp2Hf(ER)2 compounds, which represent the first Hf–E bonds.
                                    用Cp 2 HfCl 2还原R
ECl 2(E = Ga,In; R = –C 6 H 3 -2,6-(2,4,6 - i -Pr 3 C 6 H 2)2)的
钠金属还原得到Cp 2个Hf(ER)2化合物,代表第一个Hf–E键。