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The Stepwise Fragmentation and Modification of a Structurally well‐defined Metalloid Cluster in the Gas‐Phase – from [Ge 9 R 3 ] − (R = Si(SiMe 3 ) 3 ) to [Ge 9 ] − and [Ge 9 Si] −
Author(s) -
Koch Katharina,
Schnepf Andreas,
Schnöckel Hansgeorg
Publication year - 2006
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200600050
Subject(s) - metalloid , chemistry , cluster (spacecraft) , fragmentation (computing) , germanium , crystallography , ion , mass spectrometry , oxidation state , metal , atom (system on chip) , gas phase , electrospray ionization , polyatomic ion , inorganic chemistry , silicon , organic chemistry , chromatography , computer science , embedded system , programming language , operating system
The structurally well characterized metalloid cluster species [Ge 9 R 3 ] − (R = Si(SiMe 3 ) 3 ) is investigated in the gas phase after electrospray ionisation (ESI) by means of FT‐ICR mass spectrometry. In collision experiments (SORI‐CAD) the anions [Ge 9 ] − and [Ge 9 Si] − are obtained, each of them in another reaction channel. The former one, the anion Ge 9 − , results from the parent ion in a formal reduction process. Since [Ge 9 ] − anions can also be generated from Zintl‐anions [Ge 9 ] n− via a formal oxidation process these experiments link the solid‐state chemistry of Zintl‐anions to the molecular chemistry of metalloid clusters. The formation of the latter one, the anion [Ge 9 Si] − , reveals in which way a metal atom cluster core can be expanded, in this case from nine to ten atoms. All experimental findings are simulated by means of DFT calculations.