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Building a Lewis Base with Boron

Wang, Y. ; Robinson, G. H.

Science, 07/29/2011, Vol.333(6042), pp.530-531 [Tạp chí có phản biện]

ISSN: 0036-8075 ; E-ISSN: 1095-9203 ; DOI: http://dx.doi.org/10.1126/science.1209588

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  • Nhan đề:
    Building a Lewis Base with Boron
  • Tác giả: Wang, Y. ; Robinson, G. H.
  • Chủ đề: Boron ; Chemical Synthesis ; Catalysis
  • Là 1 phần của: Science, 07/29/2011, Vol.333(6042), pp.530-531
  • Mô tả: In introductory chemistry courses, acids are defined as substances that increase the concentration of H+ (or H3O+) in solutions (the Arrhenius concept) or act as proton donors (the Brønsted-Lowry concept). The more general Lewis concept defines an acid as a substance that can accept an electron pair and a base as a substance that can donate an electron pair. Compounds with atom centers that are inherently electron-deficient, such as boron or aluminum, readily accept electron pairs. Thus, simple compounds of these elements, such as borane (BH3) and aluminum chloride (AlCl3), are typically strong Lewis acids. If a monovalent boron center is to bear an electron pair that could be donated as a Lewis base, it would exhaust its own supply of valence electrons and end up with empty orbitals.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0036-8075 ; E-ISSN: 1095-9203 ; DOI: http://dx.doi.org/10.1126/science.1209588

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