Syntheses and Crystal Structures of the closo-Borates M2[B7H7] and M[B7H8] (M = PPh4, PNP, and N(n-Bu4)): the Missing Crystal Structure in the Series [BnHn]2- (n=6-12)

被引：20

作者：

Schlueter, Florian ^{[1
]}

Bernhardt, Eduard ^{[1
]}

机构：

[1] Berg Univ GH Wuppertal, Fachbereich Anorgan Chem C, D-42097 Wuppertal, Germany

来源：

INORGANIC CHEMISTRY | 2011年 / 50卷 / 06期

关键词：

SPIN COUPLING-CONSTANTS; BORANE ANIONS; PERTURBATION-THEORY; BOND-LENGTH; CHEMISTRY; APPROXIMATION; NONRIGIDITY; EXCHANGE;

D O I：

10.1021/ic102434t

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Oxidation of [N(n-Bu-4)](2)[B9H9] with oxygen in a mixture of dimethoxyethane and CH2Cl2 leads to salts of the [B7H7](2-) dianion. This is the first convenient synthesis for a seven-vertex hydro-closo-borate anion. Protonation with NEt3 center dot HCl resulted in salts of the [B7H8](-) monoanion. Both closo-borate anions were isolated and characterized by H-1, H-1{B-11}, B-11, and B-11{H-1} NMR spectroscopy. The temperature-dependent H-1{B-11}, B-11, and B-11{H-1} NMR spectra of [B7H8](-) were also measured. The structure of [B7H7](2-) as well as of [B7H8](-) were determined by single-crystal X-ray diffraction.

引用

页码：2580 / 2589

页数：10

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