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    • 3. 发明授权
    • Synthesis of permethyldodecaborate and paramagnetic dodecaborate salt
    • 十二硼酸十二硼酸盐和顺磁十二硼酸盐的合成
    • US06355840B1
    • 2002-03-12
    • US09576842
    • 2000-05-23
    • M. Frederick HawthorneToralf Peymann
    • M. Frederick HawthorneToralf Peymann
    • C07F502
    • C07F5/05
    • The dodecamethyl closo-borane dianion [closo-B12(CH3)12]2− and anion [closo-B12(CH3)12]− were synthesized and characterized. Dodecamethyl-closo dodecaborate (2−) was produced from [closo-B12H12]2−, using trimethylaluminum, and methyl iodide and modified Friedel-Crafts reaction conditions. The anion was produced from the dianion by chemical oxidation using ceric (4) ammonium nitrate in acetonitrile. The anion and dianion were both characterized by 1H and 11B NMR spectroscopy, high-resolution fast atom bombardment (FAB) mass spectrometry, cyclic voltammetry, and single-crystal X-ray diffraction. The “camouflaged” polyhedral borane anion [closo-B12(CH3)12]2−, can be used as a precursor to materials that offer a broad spectrum of novel applications ranging from drug applications and supramolecular chemistry to use as a weakly-coordinating dianion.
    • 合成并表征了十二甲基交联硼烷二价阴离子[closo-B12(CH3 )12] 2-和阴离子[closo-B12(CH3 )12]]。 使用三甲基铝,甲基碘和改性的Friedel-Crafts反应条件,由[closo-B12H12] 2-制备十二甲基十八硼酸盐(2-)。 通过使用硝酸铈(4)硝酸铵在乙腈中的化学氧化由二阴离子生成阴离子。 阴离子和二阴离子均以1H和11B NMR光谱,高分辨率快速原子轰击(FAB)质谱,循环伏安法和单晶X射线衍射为特征。 “伪装”多面体硼烷阴离子[closo-B12(CH3)12] 2-)可用作材料的前体,提供广泛的新型应用范围,从药物应用和超分子化学到用作弱配位二价阴离子 。