title: On the Formation of N3 H3 Isomers in Irradiated Ammonia Bearing Ices: Triazene (H2 NNNH) or Triimide (HNHNNH).
abstract: The remarkable versatility of triazenes in synthesis, polymer chemistry and pharmacology has led to numerous experimental and theoretical studies. Surprisingly, only very little is known about the most fundamental triazene: the parent molecule with the chemical formula N3 H3 . Here we observe molecular, isolated N3 H3 in the gas phase after it sublimes from energetically processed ammonia and nitrogen films. Combining theoretical studies with our novel detection scheme of photoionization-driven reflectron time-of-flight mass spectroscopy we can obtain information on the isomers of triazene formed in the films. Using isotopically labeled starting material, we can additionally gain insight in the formation pathways of the isomers of N3 H3 under investigation and identify the isomers formed as triazene (H2 NNNH) and possibly triimide (HNHNNH).
authors.affiliation: Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, 96822, Honolulu, HI, USA.|W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii, 2545 McCarthy Mall, 96822, Honolulu, HI, USA.
authors.forename: Marko
authors.identifier: http://orcid.org/0000-0002-3630-9494
authors.initials: M
authors.lastname: Förstel
authors.affiliation: Lehrstuhl für Organische Chemie II, Ruhr Universität Bochum, 44780, Bochum, Germany.
authors.forename: Yetsedaw A
authors.initials: YA
authors.lastname: Tsegaw
authors.affiliation: Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, 96822, Honolulu, HI, USA.|W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii, 2545 McCarthy Mall, 96822, Honolulu, HI, USA.
authors.forename: Pavlo
authors.initials: P
authors.lastname: Maksyutenko
authors.affiliation: Department of Chemistry and Biochemistry, Florida International University, 11200 SW 8thStreet, Miami, FL, 33199, USA.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Mebel
authors.affiliation: Lehrstuhl für Organische Chemie II, Ruhr Universität Bochum, 44780, Bochum, Germany.
authors.forename: Wolfram
authors.initials: W
authors.lastname: Sander
authors.affiliation: Department of Chemistry, University of Hawaii, 2545 McCarthy Mall, 96822, Honolulu, HI, USA. ralfk@hawaii.edu.|W. M. Keck Research Laboratory in Astrochemistry, University of Hawaii, 2545 McCarthy Mall, 96822, Honolulu, HI, USA. ralfk@hawaii.edu.
authors.forename: Ralf I
authors.identifier: http://orcid.org/0000-0002-7233-7206
authors.initials: RI
authors.lastname: Kaiser
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D007094:Imides / Q000138:chemical synthesis* / Q000737:chemistry; D007553:Isotope Labeling; D011789:Quantum Theory; D014226:Triazenes / Q000138:chemical synthesis* / Q000737:chemistry; D014466:Ultraviolet Rays
chemical_list: D007094:Imides; D014226:Triazenes; D000641:Ammonia
keywords: ammonia; matrix isolation; nitrogen chain molecules; triazene; triimides