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

Text 1-s2.0-S0022328X17303455-main.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (827kB) | Request a copy

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.

Interest & Impact

Downloads

3 since deposited on 15 Nov 2017
0 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item