Benzoxaborolate ligands in group 13 metal complexes
Eliza Jaśkowska , Iwona Justyniak , Michał K. Cyrański , Agnieszka Adamczyk-Woźniak , Andrzej Sporzyński , Ewa Zygadło-Monikowska , Wanda Ziemkowska
AbstractA series of group 13 metal benzoxaborolates [R2MOB(o-CH2O)(C6H4)]2 [R = tBu, M = Al (2), R = Me, M = Ga (3), R = tBu, M = Ga (4), R = tBu, M = In (5)] were synthesized in reactions of 1,3-dihydro-1-hydroxy-2,1-benzoxaborole (1) with group 13 metal trialkyls. The compounds were characterized by elemental analysis, melting point measurements, 1H, 13C NMR, and IR spectroscopy. The molecular structure of 2–5 was determined by single-crystal X-ray diffraction. The structure of the compounds depends on the kind of metallic center. Reaction of tBu3Al with the benzoxaborole 1 leads to the aluminum derivative 2, similar to typical dialkylaluminum carboxylates, with a central eight-membered B2Al2O4 ring, in which two oxygen atoms of the benzoxaborolate unit are bonded to aluminum atoms. In the presence of gallium and indium trialkyls, the benzoxaborole 1 acts as an alcohol yielding complexes 3–5, similar to dialkylmetal alkoxides, with a central M2O2 (where M = Ga, In) ring. Thermal decomposition of compounds 2 and 4 revealed the liberation of a mixture of organoboron compounds.
|Journal series||Journal of Organometallic Chemistry, ISSN 0022-328X|
|Publication size in sheets||0.5|
|Keywords in English||Aluminum, Gallium, Indium, Benzoxaborole, Thermogravimetric analysis|
|ASJC Classification||; ; ; ;|
|Score|| = 30.0, 09-01-2020, ArticleFromJournal|
= 30.0, 09-01-2020, ArticleFromJournal
|Publication indicators||= 11; = 10; : 2013 = 0.794; : 2013 = 2.302 (2) - 2013=2.109 (5)|
|Citation count*||9 (2016-06-01)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.