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GeCp2big [Cp-big = C-5(CH2C6H4-iPr)(5)]: A Flexible Sandwich Molecule

Naglav, D., Tobey, B., Harder, S. & Schnepf, A. Feb-2013 In : Zeitschrift fur Anorganische und Allgemeine Chemie. 639, 2, p. 354-359 6 p.

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GeCpbig2 (1) [Cpbig = C5(CH2C6H4-iPr)5] was synthesized by a reaction of KCpbig either with a GeCl solution or GeCl2 and was obtained as colorless crystals. The molecular structure of 1 was determined by X-ray diffraction, showing that 1 features two pentahapto bonded Cpbig ligands in a bent configuration with a Cpbig-GeCpbig angle of 161 degrees. Two out of ten benzyl substituents point towards the lone pair at the germanium atom so that two molecules fit perfectly together, leading to a dimeric arrangement of 1 within the solid state. Two polymorphs of 1 could be isolated, where 1 is oriented in a different way. As indicated by quantum chemical calculations, the open structure, where all benzyl substituents point away from the germanium atom is only disfavored by 21.6 kJ center dot mol1. In the open structure a bent arrangement is still realized, giving access to the lone pair at the germanium atom for further applications, e.g. in coordination chemistry.

Original languageEnglish
Pages354-359
Number of pages6
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Journal publication dateFeb-2013
Volume639
Issue2
DOIs
StatePublished
Total WOS citations0

Keywords

  • Equilibrium, Germylene, Cyclopentadienyl ligands, Quantum chemical calculations, Sandwich molecules, DENSITY-FUNCTIONAL THEORY, CLUSTER COMPOUNDS, SI-PB, TIN, GERMANIUM, METALLOCENES, BIS(PENTAMETHYLCYCLOPENTADIENYL)GERMANIUM, GERMANOCENE, ENERGETICS, COMPLEXES

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