103382-76-9Relevant articles and documents
Contributions to the Chemistry of Boron, 167. Synthesis of Diazadiboretidines, Borazines, and Octahydrotetrazatetraborocines via Stannazane Cleavage Reactions
Franz, Thomas,Hanecker, Elisabeth,Noeth, Heinrich,Stoecker, Walter,Storch, Wolfgang,Winter, Gerhard
, p. 900 - 916 (2007/10/02)
Diazadiboretidines 2 are obtained from the diazadistannetidine 1 or 2NC(CH3)3 by Sn-N cleavage with boron halides RBX2 (R = CH3, C2H5, CH(CH3)2, C6H5, Cl, X = Cl, Br).Borazines 15 are formed, however, by Sn-N cleavage of 2NC(CH3)3 (12) with RBX2 (except with (CH3)2HCBCl2) in a 1:1 ratio. (Stannylamino)boranes are NMR detectable intermediates. - The diazadiboretidines 2 2b - d (R = C2H5, CH(CH3)2, C6H5) do not dimerize in contrast to 2a (R = CH3).The equilibrium constant has been determined for the equilibrium 2a 6, the formation of the dimer obeying a second order rate law. 2 (2e) is metastable at -20 deg C.It forms 4 (8) irreversibly at 20 deg C. - 6 crystallizes in the monoclinic system, space group P21/c.The tubshaped molecule possesses alternating single and double BN bonds (BN: 1.516, 1.404 Angstroem).
