Polyfluorinated carba-closo-dodecaboranes with amino and ammonio substituents bonded to boron.
Polyfluorinated carba-closo-dodecaboranes with amino and ammonio substituents bonded to boron.
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具有与硼键合的氨基和铵取代基的多氟碳-氯-十二硼烷
DOI:
10.1039/c5dt02055g
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发表时间:
2015
影响因子:
4
通讯作者:
M. Finze
中科院分区:
文献类型:
--
作者:
S. Z. Konieczka;M. Drisch;K. Edkins;M. Hailmann;M. Finze
The inner salts x-H3N-closo-1-CB11H11 (x = 12, 2) and 7-H3N-12-F-closo-1-CB11H11 were fluorinated with elemental fluorine in anhydrous hydrogen fluoride to give the B-perfluorinated ammonio derivatives 1-H-x-H3N-closo-1-CB11F10 (x = 12, 7, 2). Deprotonation of the ammonio group yielded the corresponding amino-functionalized anions [1-H-x-H2N-closo-1-CB11F10]− (x = 12, 7, 2) that were isolated as [Et4N]+ salts. Hydrolysis of the highly fluorinated inner salts 1-H-x-H3N-closo-1-CB11F10 (x = 12, 7, 2) is very slow in acidic aqueous solutions. This stability of the ammonio derivatives is unprecedented because the related fluorinated anion [1-H2N-closo-1-CB11F11]− is immediately hydrolyzed to simple boron species in the presence of aqueous acids. The ammonio derivatives 1-H-x-H3N-closo-1-CB11F10 (x = 12, 7, 2) are much more acidic compared to their non-fluorinated counterparts as assessed from potentiometric titrations and DFT calculations. The inner salts and the anions were characterized by NMR and vibrational sepectroscopy. Solid-sate structures of 1-H-12-H3N-closo-1-CB11F10·H2O, 1-H-7-H3N-closo-1-CB11F10·diglyme, 1-H-2-H3N-closo-1-CB11F10·0.5H2O, 7-H3N-12-F-closo-1-CB11H10·(CH3)2CO and [Et4N][1-H-12-H2N-closo-1-CB11F10] were determined by single-crystal X-ray diffraction.
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影响因子:
2.3
作者:
A. Jankowiak;Junichiro Kanazawa;P. Kaszyński;Ryo Takita;M. Uchiyama
通讯作者:
A. Jankowiak;Junichiro Kanazawa;P. Kaszyński;Ryo Takita;M. Uchiyama
影响因子:
1.7
作者:
I. Glukhov;K. Lyssenko;M. Antipin
通讯作者:
I. Glukhov;K. Lyssenko;M. Antipin
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Gregory E. Dwulet;M. Juhasz
通讯作者:
M. Juhasz
影响因子:
4.6
作者:
Yoshihiro Kobayashi;A. Popov;Susie M. Miller;O. P. Anderson;S. Strauss
通讯作者:
S. Strauss
影响因子:
3.1
作者:
D. Wilbur;D. Hamlin;R. Srivastava;M. Chyan
通讯作者:
M. Chyan