Synthesis and characterization of ethynylated germa[4]pericyclyne

Abstract

This paper presents the synthesis and characterization of (TMS-ethynyl)-substituted germa[4]pericyclyne composed of acetylene moieties and germanium atoms. Characterization was performed by X-ray crystallography, UVvis absorption, and photoluminescence spectroscopy. DFT calculations suggested interactions between the side chain alkynes and the ringforming acetylenes through germanium vertex atoms.