Journal
SCIENCE
Volume 295, Issue 5554, Pages 480-481Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1067681
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Tetranitrogen (N-4), which has been the subject of great theoretical interest, has been prepared from the N-4(+) cation and positively detected as a gaseous metastable molecule with a lifetime exceeding 1 microsecond in experiments based on neutralization-reionization mass spectrometry. An examination of the geometry of N-4(+) and the fragmentation pattern of the N-14(2) N-15(2) neutral molecule has revealed that the latter is characterized by an open-chain geometry with two distinct, closely bound N-2 units joined by a longer weaker bond.
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