Synthesis,reactivity and crystal structure of trimesitylgermylamine,Mes3GeNH2 |
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| Institution: | 1. Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, China;2. Information Management Center, Jining University, Qufu 273155, China;1. Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, PR China;2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, PR China |
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| Abstract: | Trimesitylgermylamine, Mes3GeNH2, prepared in high yield by the coupling of Mes3GeCl (Mes 2,4,6-Me3C6H2) with NaNH2 or LiNH2, has been fully characterized by 1H and 13C NMR, IR and mass spectrometry. It is a rare example of a stable primary germylamine, melting at 166°C, which is only slowly cleaved by H2O, CH3OH, HCl or phenol, indicating that the central Ge atom is protected from attack by the mesityl groups. Unlike other germylamines, Mes3GeNH2 reacts with tBuCOCl to give the N-substituted amide, Mes3GeNHCOtBu, rather than Mes3GeCl. Preliminary X-ray crystallographic analyses reveal that the Ge atom has approximate tetrahedral coordination with an average GeC bond length of 1.978(3) Å and a GeN bond length of 1.854(3) Å, and crowding around the Ge atom so that it is shielded from attack by approaching reactants. |
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