Thiaborane Icosahedral Barrier Increased by the Functionalization of all Terminal Hydrogens in closo-1-SB11H11

0543366 - ÚACH 2022 RIV US eng J - Journal Article
Bakardjiev, Mario - Holub, Josef - Bavol, Dmytro - Vrána, J. - Samsonov, M. A. - Růžička, A. - Růžičková, Z. - Fanfrlík, Jindřich - Hnyk, Drahomír
Thiaborane Icosahedral Barrier Increased by the Functionalization of all Terminal Hydrogens in closo-1-SB11H11.
Inorganic Chemistry. Roč. 60, č. 12 (2021), s. 8428-8431. ISSN 0020-1669. E-ISSN 1520-510X
R&D Projects: GA ČR(CZ) GA19-17156S
Institutional support: RVO:61388980 ; RVO:61388963
Keywords : Anions * Sulfur * Organic reactions * Boron * Electrostatic potential
OECD category: Inorganic and nuclear chemistry; Physical chemistry (UOCHB-X)
Impact factor: 5.436, year: 2021
Method of publishing: Limited access
https://pubs.acs.org/doi/pdf/10.1021/acs.inorgchem.1c00796

The electrophilic substitution of icosahedral closo-1-SB11H11 with methyl iodide has resulted in two B-functionalized thiaboranes, 7,12-I2-2,3,4,5,6,8,9,10,11-(CH3)9-1-closo-SB11 and 7,8,12-I3-2,3,4,5,6,9,10,11-(CH3)8-closo-1-SB11, with the former being significantly predominant. These two icosahedral thiaboranes are the first cases of polysubstituted polyhedral boron clusters with another vertex that differs from B and C. Such polyfunctionalizations have increased the earlier observed thiaborane icosahedral barrier, not exhibiting any reactivity toward bases, unlike the parent thiaborane. The search for methylation pathways has revealed that the complete B11-methylation is impossible, like in the case of decaborane(14), where this seems to be a result of the positively charged upper parts of these two molecules.
Permanent Link: http://hdl.handle.net/11104/0320805


Research data: CCDC