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Specific Processes and Scrambling in the Dehydrogenation of Ethane and the Degenerate Hydrogen Exchange in the Gas-Phase Ion Chemistry of the Ni(C,H3,O)+/C2H6 Couple

✍ Scribed by Maria Schlangen; Helmut Schwarz; Detlef Schröder

Publisher
John Wiley and Sons
Year
2007
Tongue
German
Weight
188 KB
Volume
90
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

A mechanistically unprecedented situation characterizes the gas‐phase ion chemistry of Ni(C,H~3~,O)^+^ when reacted under thermal, single‐collision conditions with ethane. A dehydrogenation channel leading to Ni(C~3~,H~7~,O)^+^ is to 90% preceded by a complete loss of positional identity of all nine H‐atoms of the encounter complex (‘scrambling’), whereas ca. 10% of the reaction exhibit a selective CH bond activation of the alkane. In addition, a degenerate H exchange between ethane and the (C,H~3~,O) unit occurs as a side reaction, the mechanistic details of which remain unknown for the time being.

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