Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 4, Pages 1098-1105Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201805258
Keywords
density functional calculations; germanium; transition metals; X-ray diffraction; ylides
Categories
Funding
- state of Lower Saxony
- DFG [INST 184/108-1 FUGG]
- Ministry of Science and Culture (MWK) of the Lower Saxony State
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The synthesis of the germacalicene 7 from the reaction of the dipotassium germole dianion K-2[6] with 1,2-bis-diisopropylamino-3-chlorocyclopropenyl perchlorate is reported. Based on the crystal structure analysis and the results of DFT calculations, the germacalicene 7 can be viewed as a cyclopropenium germacyclopentadienide ylide that is isoelectronic to alpha-cationic phosphanes. First reactivity studies revealed its nucleophilic character and resulted in the isolation of the air- and moisture-stable carbonyl iron complex 15 and the cationic silver complex 20. One-electron oxidation of the germacalicene 7 was achieved by its reaction with [Ph3C][B(C6F5)(4)] and the bis-cationic Ge-Ge-bonded dimer 22 was isolated.
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