Molecular Ice with Hybrid Water–Bromide Network around a Cryptand with a Bromide Ion Included in the Cavity to Form a Host-within-a-Host-Like Structure
Molecular Ice with Hybrid Water–Bromide Network around a Cryptand with a Bromide Ion Included in the Cavity to Form a Host-within-a-Host-Like Structure
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DOI：
10.1002/ejic.200601082
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发表时间：
2007-03
影响因子：
2.3
通讯作者：
Madhab C. Das;P. Bharadwaj
中科院分区：
文献类型：
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作者：
Madhab C. Das;P. Bharadwaj
描述了一种水分子结合的新模式。类金刚烷水团簇与溴化物离子以及其他水分子结合形成一个笼状结构，其中溴化物包裹的aza密码子驻留在笼状结构中，形成宿主内宿主结构。这种类金刚烷水十聚体的结构与立方冰（Ic）非常相似。O··O的平均距离为2.78 A，接近Ic中存在的2.75 A， O··O·O的平均角度为109.40°，也接近冰Ic中的四面体角（©Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007）。
A new mode of association of water molecules is described. Adamantanoid water clusters bonded to bromide ions as well as other water molecules form a cage within which bromide-encapsulated aza cryptands reside to form a host-within-a-host-like structure. The structure of this adamantanoid water decamer is remarkably similar to that of cubic ice (Ic). The average O···O distance is 2.78 A, which is close to 2.75 A present in Ic, and the average O···O···O angle of 109.40° is also close to the tetrahedral angle in ice Ic.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)