Periodical trends in [Co 6 E(CO) 16 ]- clusters: Structural, synthetic and energy changes produced by substitution of P with As

Della Pergola, Roberto; Sironi, Annalisa; Colombo, Valentina; Garlaschelli, Luigi; Racioppi, Stefano; Sironi, Angelo; Macchi, Piero (2017). Periodical trends in [Co 6 E(CO) 16 ]- clusters: Structural, synthetic and energy changes produced by substitution of P with As. Journal of organometallic chemistry, 849-850, pp. 130-136. Elsevier 10.1016/j.jorganchem.2017.05.041

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The anionic cluster [Co6As(CO)16]- was synthesized through the reaction of Na[Co(CO)4] and arsenic acid in THF at room temperature. Crystallization from MeOH/2-propanol yielded two polymorphs that feature two slightly different isomers of the anion with the same PPh4+ cation. One of the isomers is very similar to the known [Co6P(CO)16]-, formed by four edge fused triangles, partially wrapping the main group atom. The other isomer features a deformed cage, which differs mainly for a non-bonding Co-Co distance. The reasons for this unprecedented stereochemistry, and the factors which may trigger this isomer, have been investigated by DFT calculations.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Macchi, Piero

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

0022-328X

Publisher:

Elsevier

Funders:

[4] Swiss National Science Foundation

Projects:

[1210] Physical and chemical properties from the electron density distribution of materials

Language:

English

Submitter:

Piero Macchi

Date Deposited:

15 Nov 2017 15:58

Last Modified:

30 Sep 2019 13:44

Publisher DOI:

10.1016/j.jorganchem.2017.05.041

BORIS DOI:

10.7892/boris.106067

URI:

https://boris.unibe.ch/id/eprint/106067

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