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Issue 10, 2001
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The formation of mixed germanium–cobalt carbonyl clusters: an electrospray mass spectrometric study, and the structure of a high-nuclearity [Ge2Co10(CO)24]2− anion

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Abstract

The reaction of [μ4-Ge{Co2(CO)7}2] with [Co(CO)4] has been monitored by electrospray mass spectrometry to detect the cluster anions generated. Conditions giving known mixed Ge–Co carbonyl clusters were established, and a new high nuclearity cluster anion, [Ge2Co10(CO)24]2− was detected. Conditions for its formation were optimised and it was subsequently isolated as its [Et4N]+ salt and characterised by single-crystal X-ray crystallography. The Ge2Co10 cluster core has a novel geometry with the two germanium atoms in semi-encapsulated positions, forming seven formal Ge–Co bonds. There are also eighteen formal Co–Co bonds. Corresponding reactions of [μ4-Si{Co2(CO)7}2] with [Co(CO)4] were also investigated.

Graphical abstract: The formation of mixed germanium–cobalt carbonyl clusters: an electrospray mass spectrometric study, and the structure of a high-nuclearity [Ge2Co10(CO)24]2− anion

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Supplementary files

Article information


Submitted
12 Feb 2001
Accepted
15 Mar 2001
First published
26 Apr 2001

J. Chem. Soc., Dalton Trans., 2001, 1645-1649
Article type
Paper

The formation of mixed germanium–cobalt carbonyl clusters: an electrospray mass spectrometric study, and the structure of a high-nuclearity [Ge2Co10(CO)24]2− anion

C. Evans, K. M. Mackay and B. K. Nicholson, J. Chem. Soc., Dalton Trans., 2001, 1645
DOI: 10.1039/B101353J

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