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Towards Detection of a Long‐lived Protonated Metal Cation: Generation of GeH 2+ Using High‐Energy Collisions
Author(s) -
Jackson Phillip,
Diefenbach Martin,
Srinivas Ragampeta,
Schröder Detlef,
Schwarz Helmut
Publication year - 2000
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(20000417)39:8<1445::aid-anie1445>3.0.co;2-y
Subject(s) - dication , metastability , dissociation (chemistry) , protonation , chemistry , coulomb explosion , atomic physics , microsecond , metal , cluster (spacecraft) , excited state , chemical physics , ionization , molecule , physics , ion , organic chemistry , astronomy , computer science , programming language
A minimal lifetime of microseconds is displayed by the dication GeH 2+ , which has been detected for the first time as the product of charge‐stripping experiments at 8 kV involving [GeH 2 ] + and O 2 . Coupled‐cluster calculations suggest that XH 2+ (X=Si, Ge) are both metastable with respect to internal conversion and dissociation via X + and H + . The picture shows a potential energy surface scan of GeH 2+ (—) and the corresponding Coulomb repulsion asymptote (‐ ‐ ‐ ‐).