Abstract
The synthesis of germanium(II) 2-tert-butyl-4-methyl-6-(oxidomethyl) phenolate (1) starting from Ge[ N(SiMe3) 2] 2 and the corresponding salicyl alcohol is reported. Compound 1 undergoes an intramolecular oxidative insertion reaction of germanium into a C-O bond to result in a cyclic germanium(IV) tetraoxidogermocane (2). Addition of 3-tert-butyl-2-hydroxy- 5-methylbenzyl alcohol to either compound 1 or 2 gave a spirocyclic monoorgano dioxagermine (3). The results of H-1 NMR spectroscopic studies and DFT-D calculations are in agreement with the proposed reaction cascade in which the novel germylene 1 is first converted into the germocane 2 followed by reaction with 3-tert-butyl-2-hydroxy-5-methylbenzyl alcohol to finally provide compound 3. Addition of 4-(dimethylamino) pyridine to a solution of germylene 1 resulted in the formation of an air-stable monomeric 1: 1 complex (4). The characterization of compounds 1-4 by singlecrystal X-ray diffraction analysis, thermal analysis, and H-1 NMR, C-13{1H} NMR, and ATR-FTIR spectroscopy is presented.
Original language | English |
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Pages (from-to) | 5467-5479 |
Number of pages | 13 |
Journal | European Journal of Inorganic Chemistry |
Issue number | 33 |
DOIs | |
Publication status | Published - Nov 2015 |
Externally published | Yes |