Molecular structure of bis(acetylacetonato)beryllium in the gas phase as determined from electron diffraction data

Abstract

The molecular structure of bis(acetylacetonato)beryllium has been determined by gas electron diffraction. The experimental data were found to be consistent with the D 2d model in which the oxygen atoms are arranged tetrahedrally around the central beryllium atom (∠OBeO = 106.0 ± 1.0°). The structural parameters are as follows: r g(Be-O) = 1.615 ± 0.006 Å, r g (C-O) = 1.270 ± 0.004 Å, r g (C-C ring) = 1.397 ± 0.004 Å, r g (C-C meth) = 1.499 ± 0.005 Å. The mean amplitudes of vibration were calculated from the normal-vibration treatment using the modified Urey—Bradley force field