1,2-Bis(triazolyl)tetraphenyldigermanes: Synthesis, Structure and Properties.

Using the [3+2] cycloaddition reaction of [HC≡C-GePh -] (1) and a number of RCH N , this work described the synthesis of a series of novel heterocyclic digermanes, bitriazoles [1,4-C HN (CH R)GePh -] , 2-12 (R=Ph, p-Tol, p-C H NMe , p-C H OMe, p-C H Br, m-C H NO , 2-Naphth, CH -p-OC H CHO, CH -p-OC H COOMe, CH P(O)(OEt) , COOEt), difficult to produce by other methods. The structural peculiarities of these compounds were studied in detail by NMR spectroscopy and by XRD analysis (for 6, 9 and 10). The properties of 1-12 were studied by UV/vis and luminescence emission spectroscopy, electrochemistry and DFT calculations, indicating an effective conjugation in their molecules.