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二水合六羟基锡酸锂(IV)，第二种具有层状结构的单斜变体。

Dilithium hexa-hydroxidostannate(IV) dihydrate, a second monoclinic modification with a layer structure.

作者信息

Kamaha Shouassi, Reuter Hans

机构信息

Institut für Chemie neuer Materialien, Strukturchemie, Universität Osnabrück, Barbarastrasse 7, D-49069 Osnabrück, Germany.

出版信息

Acta Crystallogr Sect E Struct Rep Online. 2013 Apr 5;69(Pt 5):i25. doi: 10.1107/S1600536813008416. Print 2013 May 1.

DOI:10.1107/S1600536813008416
PMID:23723749
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3647783/
Abstract

The title compound, Li2[Sn(OH)6]·2H2O, is dimorphic. As for the previously described α-modification, the title β-modification crystallizes in the monoclinic system and contains the same primary building units, viz Sn(OH)6 octa-hedra and [Li(μ2-OH)3(H2O)] tetra-hedra. In contrast to the Sn-O bond lengths that are very similar in both modifications, the Li-O bond lengths differ significantly, in particular those involving the water mol-ecule. In the new β-modification, the primary building units are linked into layers parallel to (010). The Sn(OH)6 octa-hedra (-1 symmetry) form hexa-gonal nets and the [Li(μ2-OH)3(H2O)] tetra-hedra are situated in between, with their apices in an alternating fashion up and down. O-H⋯O hydrogen bonds between OH groups and water mol-ecules exist within the layers as well as between them.

摘要

标题化合物Li₂[Sn(OH)₆]·2H₂O具有二态性。与先前描述的α变体一样，标题β变体以单斜晶系结晶，且包含相同的基本结构单元，即Sn(OH)₆八面体和[Li(μ₂ - OH)₃(H₂O)]四面体。与两种变体中非常相似的Sn - O键长不同，Li - O键长有显著差异，尤其是涉及水分子的那些键长。在新的β变体中，基本结构单元连接成平行于(010)的层。Sn(OH)₆八面体（-1对称）形成六边形网络，[Li(μ₂ - OH)₃(H₂O)]四面体位于其间，其顶点以交替方式上下排列。层内以及层间存在OH基团与水分子之间的O - H⋯O氢键。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/c66b8a66334f/e-69-00i25-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/34c3d71cac5d/e-69-00i25-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/16a0ba731a25/e-69-00i25-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/7c65dbc89be1/e-69-00i25-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/c66b8a66334f/e-69-00i25-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/34c3d71cac5d/e-69-00i25-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/16a0ba731a25/e-69-00i25-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/7c65dbc89be1/e-69-00i25-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee8e/3647783/c66b8a66334f/e-69-00i25-fig4.jpg

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