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[Ag₁₁₅S₃₄(SCH₂C₆H₄ tBu)₄7(dpph)₆]: synthesis, crystal structure and NMR investigations of a soluble silver chalcogenide nanocluster

Bestgen, Sebastian; Fuhr, Olaf; Breitung, Ben; Chakravadhanula, V. S.K.; Guthausen, Gisela; Hennrich, Frank; Yu, Wen; Kappes, Manfred M.; Roesky, Peter W.; Fenske, Dieter

Abstract: With the aim to synthesize soluble cluster molecules, the silver salt of (4-(tert-butyl)phenyl)methanethiol [AgSCH2C6H4tBu] was applied as a suitable precursor for the formation of a nanoscale silver sulfide cluster. In the presence of 1,6-(diphenylphosphino)hexane (dpph), the 115 nuclear silver cluster [Ag115S34(SCH2C6H4tBu)47(dpph)6] was obtained. The molecular structure of this compound was elucidated by single crystal X-ray analysis and fully characterized by spectroscopic techniques. In contrast to most of the previously published cluster compounds with more than a hundred heavy atoms, this nanoscale inorganic molecule is soluble in organic solvents, which allowed a comprehensive investigation in solution by UV-Vis spectroscopy and one- and two-dimensional NMR spectroscopy including 31P/109Ag-HSQC and DOSY experiments. These are the first heteronuclear NMR investigations on coinage metal chalcogenides. They give some first insight into the behavior of nanoscale silver sulfide clusters in solution. Additionally, molecular weight determinations were performed by 2D analytical ultracentrifugation and HR-TEM investigations confirm the presence of size-homogeneous nanoparticles present in solution.


Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Karlsruhe Nano Micro Facility (KNMF)
Institut für Physikalische Chemie (IPC)
Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)
Helmholtz-Institut Ulm (HIU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1039/c6sc04578b
ISSN: 2041-6520, 2041-6539
KITopen ID: 1000067564
HGF-Programm 43.21.04; LK 01
Erschienen in Chemical science
Band 8
Heft 3
Seiten 2235-2240
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