Swollen Polyhedral Volume of the anti-B18H22 Cluster via Extensive Methylation: Anti-B18H8Cl2Me12

0522774 - ÚACH 2021 RIV US eng J - Journal Article
Londesborough, Michael Geoffrey Stephen - Lang, Kamil - Clegg, W. - Waddell, P. G. - Bould, Jonathan
Swollen Polyhedral Volume of the anti-B18H22 Cluster via Extensive Methylation: Anti-B18H8Cl2Me12.
Inorganic Chemistry. Roč. 59, č. 5 (2020), s. 2651-2654. ISSN 0020-1669. E-ISSN 1520-510X
R&D Projects: GA ČR(CZ) GA18-20286S
Grant - others:AV ČR(CZ) StrategieAV21/10
Program: StrategieAV
Institutional support: RVO:61388980
Keywords : Boron * Absorption * Cluster chemistry * Fluorescence
OECD category: Inorganic and nuclear chemistry
Impact factor: 5.165, year: 2020
Method of publishing: Limited access
https://doi.org/10.1021/acs.inorgchem.0c00179

Methylation of anti-B18H22 (1) affords the first example of alkyl substitution of terminal hydrogen atoms on the fluorescent octadecaborane-22 molecule to give highly methylated 2,2′-Cl2-1,1′,3,3′,4,4′,7,7′,8,8′,10,10′-Me12-anti-B18H8 (2). This extensive chemical substitution leads to a swelling in the polyhedral volume of the 18-vertex boron atomic skeleton of the molecule and an enhancement of the absorption and solubility characteristics of this highly fluorescent molecule. We propose this “swollen polyhedral volume“ to be the result of a marked increase in the relative positivity of the “cluster-only total charge“ of the boron atomic skeleton caused by the combined electron-withdrawing capacity of the 12 methyl groups. Enhancement in the absorption and solubility properties may be crucial in the design of new borane-based laser materials.
Permanent Link: http://hdl.handle.net/11104/0307214


Research data: CCDC, CCDC, ACS publications