Tetranitromethane defined

After seventy years of disparate and conflicting results from diffraction experiments and spectroscopic analyses, chemists have finally grasped the highly symmetric molecule, tetranitromethane, and obtained a definitive structure consistent with theory. The German team reports in the journal Angewandte Chemie how they have obtained structures for both the gas phase and the solid state for this unstable compound, often used to add nitro groups to other molecules.