Abstract
Durch Reaktion von Natrium-bis(trimethylsilyl)amid mit ZnCl2, CdI2 bzw. HgBr2 bilden sich in hohen Ausbeuten die monomeren, leicht flüchtigen Silylamide [(CH3)3Si]2NMN[Si(CH3)3]2 (M = Zn, Cd, Hg). Ihie physikalischen und chemischen Eigenschaften werden mitgeteilt. Die aus den IR- und Raman-Spektren berechneten Kraftkonstanten sprechen in allen Verbindungen für eine kovalente MN-Einfachbindung, hingegen im Einklang mit den 1H-KMR-Spektren für einen erhöhten SiN-Bindungsgrad.By reaction of sodium bis(trimethylsilyl)amide with ZnCl2, CdI2 and HgBr2, respectively, the monomeric, volatile silylamides [(CH3)3Si]2NMN[Si(CH3)3]2 (M= Zn, Cd, Hg) are formed. Their physical and chemical properties are reported. From IR and Raman data, force constants were calculated which show that the MN bond is a covalent single bond and, supported by PMR results, suggest that the SiN bond is of increased order.
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