1. Synthesis, characterization and mechanism of formation of 6-substituted nido-B10H13 decaboranes by the opening reaction of closo-decahydrodecaborate [B10H10]2- cage.
- Author
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Naoufal, Daoud, Laila, Zahra, Yazbeck, Ogaritte, Hamad, Hussein, Ibrahim, Ghassan, Aoun, Riman, Safa, Ali, EL Jamal, Mohieddine, and Kanj, Ali
- Subjects
CHEMICAL synthesis ,LIGANDS (Chemistry) ,NITRIC acid ,SULFURIC acid ,ORGANIC solvents ,BORON compounds ,CHEMICAL reactions - Abstract
The synthesis of new 6-LB
10 H13 (L = ligand) derivatives of decaborane B10 H14 with different ligands was achieved by the opening cage reaction of closo-decahydrodecaborate (NH4 )2 B10 H10 in the presence of a strong acid (HNO3 or H2 SO4 ) in organic solvents (hexane or benzene derivatives). This reaction was performed by varying different factors: the acid strength, the solvent polarity, the equivalent amounts of (NH4 )2 B10 H10 with respect to the acid used (1/4 or 1/6) and the reaction time (30 minutes to 24 hours). Nitric acid forced hexane solvent to play the role of ligand whereas sulfuric acid did not. The reaction of (NH4 )2 B10 H10 with HNO3 in hexane produced 6-(C6 H13 )B10 H13 and [B9 H13 NO3 ]- . The reaction of (NH4 )2 B10 H10 with H2 SO4 in aromatic solvent L (benzene, toluene, o-xylene and m-xylene) produced 6-LB10 H13 and 6-(HO3 SO)B10 H13 as major products with B6 H10 and [B9 H14 ]- as minor products. All these derivatives were characterized by11 B NMR,1 H NMR,13 C NMR and negative ESI. This study elucidated some facts and ideas that were not clear concerning the mechanism of opening reaction of closo-[B10 H10 ]2- . [ABSTRACT FROM AUTHOR]- Published
- 2013
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