Source:http://linkedlifedata.com/resource/pubmed/id/20305357
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
Pt 2
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| pubmed:dateCreated |
2010-3-22
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| pubmed:abstractText |
No crystal structure at ambient pressure is known for tetramethylsilane, Si(CH(3))(4), which is used as a standard in NMR spectroscopy. Possible crystal structures were predicted by global lattice-energy minimizations using force-field methods. The lowest-energy structure corresponds to the high-pressure room-temperature phase (Pa3, Z = 8). Low-temperature crystallization at 100 K resulted in a single crystal, and its crystal structure has been determined. The structure corresponds to the predicted structure with the second lowest energy rank. In X-ray powder analyses this is the only observed phase between 80 and 159 K. For tetramethylgermane, Ge(CH(3))(4), no experimental crystal structure is known. Global lattice-energy minimizations resulted in 47 possible crystal structures within an energy range of 5 kJ mol(-1). The lowest-energy structure was found in Pa3, Z = 8.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Apr
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| pubmed:issn |
1600-5740
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:volume |
66
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
229-36
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| pubmed:year |
2010
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| pubmed:articleTitle |
Predicted crystal structures of tetramethylsilane and tetramethylgermane and an experimental low-temperature structure of tetramethylsilane.
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| pubmed:affiliation |
Goethe University, Institute of Inorganic and Analytical Chemistry, Max-von-Laue-Strasse 7, 60438 Frankfurt am Main, Germany.
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| pubmed:publicationType |
Journal Article
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