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    Role of Steric Hindrance in the Crystal Packing of Z′ = 4 Superstructure of Trimethyltin Hydroxide

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    Type
    Article
    Authors
    Dey, S.
    Schönleber, A. cc
    Mondal, S. cc
    Ali, S. I.
    van Smaalen, S. cc
    KAUST Department
    King Abdullah University of Science and Technology (KAUST), Core Labs, Thuwal, 23955-6900, Saudi Arabia.
    Date
    2018-01-22
    Online Publication Date
    2018-01-22
    Print Publication Date
    2018-03-07
    Permanent link to this record
    http://hdl.handle.net/10754/627466
    
    Metadata
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    Abstract
    The roomerature crystal structure of trimethyltin hydroxide, (CH)SnOH, has been described by Anderson et al. [Cryst. Growth Des. 2011, 11, 820-826] as a 2a × 2b × 8c, 32-fold superstructure. We report a a × b × 8c, eight-fold superstructure with orthorhombic P2cn symmetry and Z′ = 4. Structured diffuse scattering observed at the positions of presumed superlattice reflections along a∗ and b∗ might have appeared as Bragg reflections in the experiment by Anderson et al. Alternatively, Anderson et al. and the present work might have studied different polymorphs of (CH)SnOH. Crystalline (CH)SnOH constitutes polymeric chains arranged parallel to c. In the eight-fold superstructure at 220 K, the polymeric chains possess a distorted zigzag arrangement of linked linear O-Sn-O units with bent angle at oxygen of ∼139.2°. This structure is essentially different from the 8-helical arrangement in the published 32-fold superstructure model. The origin of the distorted zigzag structure is explained by steric hindrance between hydrogen atoms of adjacent hydroxy groups and (CH)Sn groups. Frustration in the packing of the chains is determined by steric hindrance between methyl groups of neighboring chains, which prevents the formation of interchain C-H···O hydrogen bonds.
    Citation
    Dey S, Schönleber A, Mondal S, Ali SI, van Smaalen S (2018) Role of Steric Hindrance in the Crystal Packing of Z′ = 4 Superstructure of Trimethyltin Hydroxide. Crystal Growth & Design 18: 1394–1400. Available: http://dx.doi.org/10.1021/acs.cgd.7b01295.
    Sponsors
    The authors thank Carsten Paulmann for assistance in the diffraction experiments at beamline F1 of Hasylab at DESY, Hamburg. The authors thank Karen Friese and Vaclav Petricek for useful discussions. Financial support has been obtained from the German Science Foundation (DFG) under grant number SCHO 830/3-1.
    Publisher
    American Chemical Society (ACS)
    Journal
    Crystal Growth & Design
    DOI
    10.1021/acs.cgd.7b01295
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.cgd.7b01295
    Relations
    Is Supplemented By:
    • [Dataset]
      . DOI: 10.5517/ccdc.csd.cc1pv58z HANDLE: 10754/664059
    Is Supplemented By:
    • [Dataset]
      . DOI: 10.5517/ccdc.csd.cc1pv5d3 HANDLE: 10754/664060
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.cgd.7b01295
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