Elemental iodine has been studied by ¹²⁹I M\"ossbauer effect at 4 K to pressures of 30 GPa in a diamond anvil cell. Its structural transformations leading to metallization have been determined by the quadrupole interaction. At P{≥}16 GPa an I₂-I₂ zigzag chain is formed leading to its metallic behavior and at P{≥}21 GPa the formation of a quasi two-dimensional system is observed. Up to 30 GPa the 1₂ molecule remains the building block of the high-pressure structural modifications.
No takes yet. Share an insight, caveat, or question.
Pasternak et al. (1987) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: