Gold(I) Pyrazolate Clusters: The Structure and Luminescence of the Tetranuclear, Base-Stabilized [(dppm)2Au4(3,5-Ph2Pz)2](NO3)2 ⋅ H2O View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2003-03

AUTHORS

Ahmed A. Mohamed, José M. López-de-Luzuriaga, John P. Jr. Fackler

ABSTRACT

The tetranuclear Au(I) pyrazolate complex, [(dppm)2Au4(3,5-Ph2Pz)2](NO3)2 ⋅ H2O, 1, has been synthesized and structurally characterized. It is the first tetranuclear pyrazolate of Au(I) to have been found, although the trinuclear pyrazolates of Au(I) are well known. Complex 1 exhibits luminescence at 77 K when excited at 333 nm with an emission maximum at 454 nm. The emission has been assigned to ligand to metal charge transfer, LMCT, based upon the vibronic structure that is observed. The complex crystallizes in the monoclinic space group P21/c, with a=19.33(3) Å, b=20.26(3) Å, c=19.80(3) Å, β=106.74(2)°, V=7425(17) Å3, Z=8, and R=0.058. The Au ⋅ ⋅ ⋅ Au distances are Au(1) ⋅ ⋅ ⋅ Au(4)=3.185(3) Å, Au(1) ⋅ ⋅ ⋅ Au(2)=3.230(3) Å, Au(2) ⋅ ⋅ ⋅ Au(3)=3.079(3) Å, and Au(3) ⋅ ⋅ ⋅ Au(4)=3.280(3) Å. More... »

PAGES

61-70

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/a:1022953508463

DOI

http://dx.doi.org/10.1023/a:1022953508463

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1024567779


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