Exclusive π Encapsulation of Light Alkali Metal Cations by a Neutral Molecule.
Exclusive π Encapsulation of Light Alkali Metal Cations by a Neutral Molecule.
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DOI:
10.1002/anie.201506487
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发表时间:
2015-10
影响因子:
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通讯作者:
R. Bertermann;H. Braunschweig;P. Constantinidis;Theresa Dellermann;Rian D. Dewhurst;W. Ewing;I. Fischer;T. Kramer;J. Mies;A. K. Phukan;A. Vargas
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文献类型:
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作者:
R. Bertermann;H. Braunschweig;P. Constantinidis;Theresa Dellermann;Rian D. Dewhurst;W. Ewing;I. Fischer;T. Kramer;J. Mies;A. K. Phukan;A. Vargas
Cation-π interactions are one of the most important classes of noncovalent bonding, and are seen throughout biology, chemistry, and materials science. However, in almost every documented case, these interactions play only a supporting role to much stronger covalent or dative bonds, thus making examples of exclusive cation-π bonding exceedingly rare. In this study, a neutral diboryne molecule is found to encapsulate the light alkali metal cations Li(+) and Na(+) in the absence of a net charge, covalent bonds, or lone-pair donor groups. The resulting encapsulation complexes are, to our knowledge, the first structurally authenticated species in which a neutral molecule binds the light alkali metals exclusively through cation-π interactions.