One-Step Synthesis and Structure of an Oligo(spiro-orthocarbonate)

The reaction of pentaerythritol and tetraethylorthocarbonate at 260 degrees C for 12 h yields a white crystalline material that was characterized by 13C CPMAS NMR, CHN analysis, FT-IR, electron and X-ray powder diffraction, and Rietveld analysis. The white crystalline material was found to have the formula C6H8O4 and a crystal structure with a monoclinic cell a = 9.167 A, b = 5.681 A, c = 5.880 A, beta = 90.0 degrees , space group I2 of hexagonally arranged spiro-oligomeric chains.