- X-ray diffraction and inelastic neutron scattering study of 1:1 tetramethylpyrazine chloranilic acid complex: temperature, isotope, and pressure effects. Prager, M., Pietraszko, A., Sobczyk, L., Pawlukoj??, A., Grech, E., Seydel, T., Wischnewski, A., Zamponi, M. The Journal of chemical physics (2006)