The Infrared Spectrum of Matrix-Isolated Hexamethylenetetramine in Argon at 12 K

It is commonly accepted that constant exposure of comets and ice grains to ultraviolet (UV) radiation causes an organic crust to form on their surface, but the exact molecules that comprise the crust remains a mystery. Based on our lab simulations of interstellar and cometary ices (a paper to be submitted this spring) we believe that Hexamethylenetetramine (HMT) may be a major component of the organic crust on the surface of comets and ice grains. The enclosed paper presents the laboratory infrared spectra and UV photochemistry of HMT under conditions akin to that of the interstellar medium.