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IR‐Laser Ablation of Potassium Cyanide: A Surprisingly Simple Route to Polynitrogen and Polycarbon Species
Author(s) -
Redeker Frenio A.,
Beckers Helmut,
Riedel Sebastian
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201905103
Subject(s) - nitrene , chemistry , cyanide , potassium , potassium cyanide , irradiation , azide , argon , photochemistry , nitrogen , carbon fibers , matrix isolation , inorganic chemistry , organic chemistry , materials science , physics , composite number , nuclear physics , composite material , catalysis
Pulsed laser irradiation of solid potassium cyanide (KCN) produces, besides free nitrogen and carbon atoms, the molecular species KN and KC which are potential candidates for interstellar species of potassium. Additionally, N 3 , N 3 − , KN 3 , C 3 , C 3 − , and KC 3 are produced and isolated in solid noble gases as well as in solid N 2 . Molecular potassium nitrene (KN) reacts with dinitrogen in neon and argon matrices after photochemical excitation ( λ =470 nm) forming molecular end‐on ( C ∞v ) and side‐on ( C 2v ) potassium azide isomers. The side‐on isomer ( C 2v ) is thermodynamically favored at the CCSD(T)/ma‐def2‐TZVP level of theory. It can be obtained from the end‐on isomer by UV‐irradiation ( λ =273 nm).