title: Reaction of the thermo-labile triazenide Na[tBu3SiNNNSiMe3] with CO2: formation of the imido carbonate (tBu3SiO)(Me3SiO)C[double bond, length as m-dash]N-SitBu3and carbamine acid (tBu3SiO)CONH2.
abstract: The thermo-labile triazenide Na[tBu3SiNNNSiMe3] was prepared by the reaction of Me3SiN3with Na(thf)2[SitBu3] in pentane at -78 °C. Treatment of Na[tBu3SiNNNSiMe3] with an excess of carbon dioxide in pentane at -78 °C yielded the imido carbonate (tBu3SiO)(Me3SiO)C[double bond, length as m-dash]N-SitBu3and the carbamine acid (tBu3SiO)CONH2along with other products. From the reaction solution we could isolate the imido carbonate (tBu3SiO)(Me3SiO)C[double bond, length as m-dash]N-SitBu3and carbamine acid (tBu3SiO)CONH2. At first single crystals of the carbamine acid (tBu3SiO)CONH2(triclinic, space group P1[combining macron]) were grown from this solution at room temperature. A second crop of crystals were obtained by concentrating the solution. The second charge consisted of the imido carbonate (tBu3SiO)(Me3SiO)C[double bond, length as m-dash]N-SitBu3(monoclinic, space group P21/n).
authors.affiliation: Institut für Anorganische Chemie, Goethe-Universität, Max-von-Laue-Str. 7, D-60438 Frankfurt, Germany. lerner@chemie.uni-frankfurt.de.
authors.forename: H-W
authors.initials: HW
authors.lastname: Lerner
authors.forename: M
authors.initials: M
authors.lastname: Bolte
authors.forename: M
authors.initials: M
authors.lastname: Wagner