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Stack by Stack: From the Free Cyclopentadienylgermanium Cation Via Heterobimetallic Main-Group Sandwiches to Main-Group Sandwich Coordination Polymers.

ABSTRACT: Heterobimetallic cationic sandwich complexes [M(?-Cp)M'Cp]+ of group?13 (M=Ga, In) and group?14 (M'=Ge, Sn) elements have been prepared as [WCA]- salts (WCA=Al(ORF )4 ; ORF =OC(CF3 )3 ). Their molecular structures include free apical gallium or indium atoms. The sandwich complexes were formed in the reactions of [M(HMB)]+ [WCA]- (HMB=C6 Me6 ) with the free metallocenes [M'Cp2 ]. Their structures are related to known stannocene and stannocenium salts; the unprecedented germanium analogues, namely the free germanocenium cation [GeCp]+ and the corresponding triple-decker complex cation [CpGe(?-Cp)GeCp]+ , are described herein. By variation of the reaction conditions, these sandwich complexes can be transformed into the group?13/14 mixed cationic coordination polymer [{In(HMB)(?-SnCp2 )}n ][WCA]n . This polymeric chain motif was also successfully replicated by the synthesis of complexes [{Ga/In(HMB)(?-FeCp2 )}n ][WCA]n containing FeCp2 as a bridging ligand.

SUBMITTER: Schorpp M 

PROVIDER: S-EPMC7702131 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Stack by Stack: From the Free Cyclopentadienylgermanium Cation Via Heterobimetallic Main-Group Sandwiches to Main-Group Sandwich Coordination Polymers.

Schorpp Marcel M   Krossing Ingo I  

Chemistry (Weinheim an der Bergstrasse, Germany) 20201001 62

Heterobimetallic cationic sandwich complexes [M(μ-Cp)M'Cp]<sup>+</sup> of group 13 (M=Ga, In) and group 14 (M'=Ge, Sn) elements have been prepared as [WCA]<sup>-</sup> salts (WCA=Al(OR<sup>F</sup> )<sub>4</sub> ; OR<sup>F</sup> =OC(CF<sub>3</sub> )<sub>3</sub> ). Their molecular structures include free apical gallium or indium atoms. The sandwich complexes were formed in the reactions of [M(HMB)]<sup>+</sup> [WCA]<sup>-</sup> (HMB=C<sub>6</sub> Me<sub>6</sub> ) with the free metallocenes [M'Cp<s  ...[more]

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