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Dodecahydro-nido-undecaborate [B11H12]3–

✍ Scribed by W. Dirk; P. Paetzold; K. Radacki

Publisher
John Wiley and Sons
Year
2001
Tongue
German
Weight
91 KB
Volume
627
Category
Article
ISSN
0372-7874

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✦ Synopsis

The deprotonation of the nido-anion [B 11 H 14 ] ± by two equivalents of LitBu yields the anion [B 11 H 12 ] 3± . Three observed 11 B NMR shifts of this anion in the ratio 1 : 5 : 5 are in agreement with shifts calculated by the GIAO method on the basis of the ab initio computed geometry. The deprotonation can be reversed, giving back [B 11 H 14 ] ± via [B 11 H 13 ] 2± . The thermolysis of [Li(thp) x ] 3 [B 11 H 12 ] in thp at 80 °C leads to the closo-borate [Li(thp) 3 ] 2 [B 11 H 11 ] under elimination of LiH. Anhydrous air transforms [B 11 H 12 ] 3± into the known oxa-nido-dodecaborate [OB 11 H 12 ] ± . The rhoda-closo-dodecaborate [L 2 RhB 11 H 11 ] 3± is formed from [B 11 H 12 ] 3± and RhL 3 Cl (L = PPh 3 ).

📜 SIMILAR VOLUMES

Undecaborates M2[B11H11]: Facile Synthes
Undecaborates M2[B11H11]: Facile Synthesis, Crystal Structure, and Reactions
✍ O. Volkov; W. Dirk; U. Englert; P. Paetzold 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 German ⚖ 228 KB 👁 1 views

closo-Undecaborates were synthesized by the deprotonation of B 11 H 13 (SMe 2 ) with LitBu in thp or K [BHEt 3 ] in thf, [Li(thp) 3 ] 2 [B 11 H 11 ] and K 2 [B 11 H 11 ] being obtained in 83 and 93% yield, respectively. K 2 [B 11 H 11 ] can be transformed into A 2 [B 11 H 11 ] with the corresponding