Abstract
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, N3, N3 −, KN3, C3, C3 −, and KC3 are produced and isolated in solid noble gases as well as in solid N2. 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).
Highlights
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
Potassium cyanide is one of the metal cyanide species detected in proximity to a star in space[1] and KC, KN, and KO are supposed to be potential candidates for further interstellar species of potassium.[2]
As a logical extension of our former work[4] we present in this study results obtained by laser ablation of the ternary system potassium cyanide (KCN)
Summary
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. IR spectra obtained by us from IR-laser ablation of potassium cyanide deposited in solid argon are in the spectral region above 2000 cmÀ1 are very similar to those described by IHM.
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