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A porphyrin complex of Gold(I): (Phosphine)gold(I) azides as cation precursors.
- Source :
-
Proceedings of the National Academy of Sciences of the United States of America . 9/23/2008, Vol. 105 Issue 38, p14293-14297. 5p. 3 Diagrams, 1 Graph. - Publication Year :
- 2008
-
Abstract
- A silver- and Brönsted acid-free protocol for generating the (tricy- clohexylphosphine)gold(l) cation from the corresponding azide complexes is disclosed. The gold(l) cations so liberated are trapped by complexation with octaethylporphyrin. The first structurally authenticated gold(l) porphyrin complex crystallizes with formula C72H112Au2F12N4P2Sb2, space group (2/c, a = 21.388(4), b = 19.679 (4), c = 19.231(3) Å; β = 111.030 (3)°. Solution spectroscopic studies indicate that the di-gold complex fragments on dissolution in organic solvents. Approximate density-functional theory calculations find an electrostatic origin for the binding of two gold(I) centers to the unprotonated nitrogen atoms, despite greater orbital density on the porphyrin meso carbons. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00278424
- Volume :
- 105
- Issue :
- 38
- Database :
- Academic Search Index
- Journal :
- Proceedings of the National Academy of Sciences of the United States of America
- Publication Type :
- Academic Journal
- Accession number :
- 34964574
- Full Text :
- https://doi.org/10.1073/pnas.0806520105