Source:http://linkedlifedata.com/resource/pubmed/id/17691782
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| Predicate | Object |
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| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
35
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| pubmed:dateCreated |
2007-8-29
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| pubmed:abstractText |
The synthesis and structural characterization of the first homologous, molecular M-M bonded series for the group 12 metals are reported. The compounds Ar'MMAr' (M = Zn, Cd, or Hg; Ar' = C(6)H(3)-2,6-(C(6)H(3)-2,6-Pr(i)(2))(2)) were synthesized by reduction of the corresponding arylmetal halides by alkali metal/graphite (Zn or Hg) or sodium hydride (Cd). These compounds possess almost linear C-M-M-C core structures with two-coordinate metals. The observed M-M bonds distances were 2.3591(9), 2.6257(5), and 2.5738(3) A for the zinc, cadmium, and mercury species, respectively. The shorter Hg-Hg bond in comparison to that of Cd-Cd is consistent with DFT calculations which show that the strength of the Hg-Hg bond is greater. The arylmetal halides precursors (Ar'MI)(1 or 2), and the highly reactive hydrides (Ar'MH)(1 or 2), were also synthesized and fully characterized by X-ray crystallography (Zn and Cd) and multinuclear NMR spectroscopy. The arylzinc and arylcadmium iodides have iodide-bridged dimeric structures, whereas the arylmercury iodide, Ar'HgI, is monomeric. The arylzinc and arylcadmium hydrides have symmetric (Zn) or unsymmetric (Cd) mu-H-bridged structures. The Ar'HgH species was synthesized and characterized by spectroscopy, but a satisfactory refinement of the structure was precluded by the contamination of monomeric Ar'HgH by Ar'H. It was also shown that the decomposition of Ar'Cd(mu-H)(2)CdAr' at room temperature leads to the M-M bonded Ar'CdCdAr', thereby supporting the view that the reduction of the iodide proceeds via the hydride intermediate.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Sep
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| pubmed:issn |
0002-7863
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| pubmed:author |
pubmed-author:BryndaMarcinM,
pubmed-author:FettingerJames CJC,
pubmed-author:FischerRoland CRC,
pubmed-author:MerrillW AlexanderWA,
pubmed-author:OlmsteadMarilyn MMM,
pubmed-author:PowerPhilip PPP,
pubmed-author:RivardEricE,
pubmed-author:WolfRobertR,
pubmed-author:WrightRobert JRJ,
pubmed-author:ZhuZhongliangZ
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| pubmed:issnType |
Print
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| pubmed:day |
5
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| pubmed:volume |
129
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
10847-57
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| pubmed:year |
2007
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| pubmed:articleTitle |
Synthesis and characterization of the homologous M-M bonded series Ar'MMAr' (M = Zn, Cd, or Hg; Ar' = C6H3-2,6-(C6H3-2,6-Pr(i)2)2) and related arylmetal halides and hydride species.
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| pubmed:affiliation |
Department of Chemistry, University of California-Davis, One Shields Avenue, Davis, California 95616, USA.
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| pubmed:publicationType |
Journal Article
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