Ethynylmonocarba-closo-dodecaborates: M[12-HCC-closo-1-CB11H11] and M[7,12-(HCC)2-closo-1-CB11H10] (M = Cs+, [Et4N]+)

被引:27
|
作者
Himmelspach, Alexander [1 ]
Finze, Maik [1 ]
机构
[1] Univ Dusseldorf, Inst Anorgan Chem & Strukturchem 2, D-40225 Dusseldorf, Germany
关键词
Monocarba-closo-dodecaborates; Alkynes; Boron; NMR spectroscopy; Structure elucidation; NUCLEAR-MAGNETIC-RESONANCE; POLYHEDRAL MONOCARBABORANE CHEMISTRY; SPIN COUPLING-CONSTANTS; SPECTROSCOPIC PROPERTIES; CRYSTAL-STRUCTURES; COMPLEXES; NMR; ANION; POLYMERIZATION; APPROXIMATION;
D O I
10.1016/j.jorganchem.2010.02.011
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Cesium and tetraethylammonium salts of the ethynyl functionalized monocarba-closo-dodecaborate anions [12-HCC-closo-1-CB11H11] and [7,12-(HCC)2-closo-1-CB11H10] were obtained by desilylation of [(EtN)-N-4][12-Me3SiCC-closo-1-CB11H11] and [Et4N][7,12-(Me3SiCC)(2)-closo-1-CB11H10], respectively. Their thermal properties were examined by differential scanning calorimetry. The compounds were characterized by multi-NMR, IR, and Raman spectroscopy, (-)-MALDI mass spectrometry, and elemental analysis. Single-crystals of Cs[12-HCC-closo-1-CB11H11] and [Et4N][7,12-(HCC)(2)-closo-1-CB11H10] were studied by X-ray diffraction. The discussion of the spectroscopic and structural properties is supported by data derived from theoretical calculations using density functional theory as well as perturbation theory. (C) 2010 Elsevier B. V. All rights reserved.
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页码:1337 / 1345
页数:9
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