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Dodecahydro‐ nido ‐undecaborate [B 11 H 12 ] 3–
Author(s) -
Dirk W.,
Paetzold P.,
Radacki K.
Publication year - 2001
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200112)627:12<2615::aid-zaac2615>3.0.co;2-m
Subject(s) - chemistry , deprotonation , thermal decomposition , ab initio , ion , stereochemistry , medicinal chemistry , organic chemistry
The deprotonation of the nido ‐anion [B 11 H 14 ] – by two equivalents of Li t Bu 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 ).