Ralf I. Kaiser

Formation of Carbonisocyanatidic Amide in Interstellar Ice Analogs as a Candidate Precursor to Prebiotic Pyrimidines

Abstract Understanding how pyrimidine nucleobases form in space is central to prebiotic chemistry, yet the pathways assembling these heterocycles remain unresolved. Carbonisocyanatidic amide (H2NC(O)NCO), an acyclic intermediate with heteroatom connectivity relevant to uracil and...

Nonequilibrium Formation of Cyanophosphine (H2PCN)─The Simplest Phosphorus-Containing Nitrile─in Interstellar Ice Analogues

Abstract The detection of phosphorus-bearing molecules along with the high abundance of nitriles in interstellar and circumstellar environments suggests that phosphorus-containing nitriles may form under astrophysical conditions; however, their formation mechanisms have remained...

Detection of the elusive cyclo−1,2-dihydrotetrazete (N4H2) in the gas phase

Nitrogen hydrides (NnHm) have attracted significant interest for their potential in developing high-energy-density materials. The synthesis of cyclic nitrogen hydrides is particularly challenging due to their inherently high strain energies. Here we report the preparation of the...