Boragermene 3 featuring a double bond between the Ge and dicoordinate B atoms has been synthesized for the first time by reacting the cyclic (alkyl)(boryl)germylene-PMe3 adduct 1 with Cl2 BN(SiMe3 )2 followed by reductive dehalogenation with KC8 . Addition of a Lewis base (Me NHC) to 3 leads to the formation of the corresponding adduct 4, which shows double bond character between the Ge and tricoordinate B atoms. Compound 3 undergoes hydrogenation with H2 concomitant with a complete scission of the Ge=B bond.

中文翻译：

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晶莹的Boragermenes。

通过使环状（烷基）（硼基）亚甲基-PMe3加合物1与Cl2 BN（SiMe3）2反应，然后用KC8进行还原脱卤反应，首次合成了Ge和双配位B原子之间具有双键的硼烷3。将路易斯碱（Me NHC）加至3会导致形成相应的加合物4，该加合物显示Ge和三配位B原子之间的双键特征。化合物3与H 2一起氢化，伴随着Ge = B键的完全断裂。