Synthesis, Characterization, and Selected Properties of 7‐ and 12‐Ammoniocarba‐closo‐dodecaboranes
Synthesis, Characterization, and Selected Properties of 7‐ and 12‐Ammoniocarba‐closo‐dodecaboranes
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7â 和 12âAmmoniocarbaâclosoâdodecaboranes 的合成、表征和选定的性质
DOI：
10.1002/ejic.201200969
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发表时间：
2013
影响因子：
2.3
通讯作者：
M. Finze
中科院分区：
文献类型：
--
作者：
S. Z. Konieczka;A. Himmelspach;M. Hailmann;M. Finze
The inner salts 12‐H3N‐closo‐1‐CB11H11(H1) and 7‐H3N‐12‐Hal‐closo‐1‐CB11H10[Hal = F (H3), Cl (H4)] were synthesized by a microwave‐assisted Buchwald–Hartwig amination starting from the corresponding monoiodinated {closo‐1‐CB11} clusters and LiN(SiMe3)2. H1was methylated to result in the zwitterion 12‐Me3N‐closo‐1‐CB11H11(2). All new compounds were characterized by multinuclear NMR spectroscopy, elemental analysis, and mass spectrometry. The crystal structures of H1·Me2CO and2were determined. The pKavalue of H1in aqueous solution was estimated by potentiometric titration and by11B{1H} NMR spectroscopic studies. The stepwise deprotonation of H1withnBuLi in [D8]THF was studied by multinuclear NMR spectroscopy. In a first step, the amine1is obtained and then the amide [12‐HN‐closo‐1‐CB11H11]2–and finally the trianion [12‐HN‐closo‐1‐CB11H10]3–or more probably lithiated species thereof are formed. The experimental spectroscopic and structural data, as well as the pKavalue of H1are compared to values derived from DFT and ab initio calculations.
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Carba-closo-dodecboranyl 配体的汞 (II) 配合物 [closo-1-CB11X11]2â (X = H、F、Cl、Br、I)
影响因子：
2.8
作者：
A. Himmelspach;J. A. P. Sprenger;J. Warneke;M. Zähres;M. Finze
通讯作者：
M. Finze
二价阴离子、自由基阴离子和中性双自由基 (HB)11CCCC(BH)11 碳硼烷二聚体的电子结构
影响因子：
--
作者：
J. Oliva;L. Serrano;Z. Havlas;J. Michl
通讯作者：
J. Michl
HCB11(CF3)(n)F(11-n)-：具有高阳极氧化电位的惰性阴离子。
影响因子：
15
作者：
Matthew G. Fete;Z. Havlas;J. Michl
通讯作者：
J. Michl
自旋耦合硼-11-质子系统的二维相关核磁共振
影响因子：
15
作者：
D. Finster;W. Hutton;R. Grimes
通讯作者：
R. Grimes
通过十四氢十一硼酸根 (1-) 离子从四氢硼酸钠简化合成十硼烷 (14)
影响因子：
4.6
作者：
G. B. Dunks;K. Barker;E. Hedaya;Catherine. Hefner;Kathy. Palmer;P. Remec
通讯作者：
P. Remec