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| Titel: |
Mercury coordination chemistry of a nitrogen/thioether sulfur ligand having an internal hydrogen bond donor: Generation of a thioether-coordinated dimercurous complex |
| Auteur: |
Allred, Russell A. Bebout, Deborah C. Arif, Atta M. Berreau, Lisa M. |
| Verschenen in: |
Main group chemistry |
| Paginering: | Jaargang 11 (2012) nr. 1 pagina's 53-67 |
| Jaar: |
2012-04-24 |
| Inhoud: |
Admixture of the chelate ligand bmnpa (N,N-bis(2-methylthio)ethyl-N-((6-neopentylamino-2-pyridyl)methyl)amine) with an equimolar amount of Hg(ClO4)2·3H2O in CH3OH/CH2Cl2, followed by recrystallization from CH3CN/Et2O, yielded the Hg(II) perchlorate complex [(bmnpa)Hg(ClO4)2] (1). Addition of an equimolar amount of Me4NOH·5H2O to a CH3CN solution of 1, followed by recrystallization from CH3OH/Et2O, yielded the dinuclear Hg22+ complex [(bmnpaHg)2](ClO4)2 (4). X-ray crystallographic characterization of 1·0.5CH3CN revealed a mononuclear structure having a primary coordination number of two with a distorted linear geometry, and four secondary bonds for an effective coordination number of six. The 1H NMR spectrum of 1 in CD3CN shows distinctive 3J199Hg-1H coupling in the benzylic -CH2- and thioether -SCH3 resonances. Complex 4·CH3OH exhibits a structure in the solid state wherein each mercury center of the Hg22+ ion displays thioether coordination and a distorted tetrahedral geometry. Complex 4 is the first dimercurous complex for which J199Hg-1H coupling involving a -SCH3 appendage is reported. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 9 gevonden artikelen
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