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Dimeric germole dianion bridged TiIII and ZrIV complexes have been synthesized. In these complexes, the germole dianion adopts a formal η1,η5 coordination to the two metal centers. The bonding situation in these bridged dimers is dominated by a covalent Ge−Ge interaction that results, for example, in a strong antiferromagnetic coupling of the d1 Ti centers.
The synthesis of a bicyclic germylene from the reaction of a germole dianion with hafnocene dichloride is reported. This germylene is stabilized by a homoconjugative interaction of the dicoordinated germanium atom with a remote C=C double bond. First reactivity studies revealed its nucleophilic character and resulted in the synthesis of bimetallic hafnium/iron and hafnium/tungsten complexes with a...
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