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14-September-2008 18:38:40 - Aurophilicity In chemistry, aurophilicity refers to the apparent tendency of gold complexes to aggregate via formation of weak gold-gold bonds.12 The phenomenon is most commonly observed crystallographically for AuI compounds. The aurophilic bond has a length of about 3.0 Å and a strength of about 7-12 kcal/mol, which is comparable to the strength of a hydrogen bond. The aurophilic interaction is considered to result from electron correlation of the closed-shell components, somewhat similar to van der Waals interactions, but unusually strong due to relativistic effects. Similar metallophilic interactions exist for a few other heavy metals, such as mercury, and can also be observed between atoms of different elements. Some documented examples include HgII···AuI, HgII···PtII, and HgII···PdII.3 References ^ Hubert Schmidbaur 1995. Ludwig Mond Lecture. High-carat gold compounds. Chem. Soc. Rev. 24: 391-400. doi:10.1039/CS9952400391. ^ Hubert Schmidbaur 2000. The Aurophilicity Phenomenon: A Decade of Experimental Findings, Theoretical Concepts and Emerging Application. Gold Bulletin 33 1: 3-10. ^ Mieock Kim, Thomas J. Taylor, and François P. Gabbai. HgII···PdII Metallophilic Interactions. J. Am. Chem. Soc. 2008, 130, 6332-6333. doi:10.1021/ja801626c This chemistry article is a stub. v d e Chemical bonds Strong Covalent bonds Antibonding Sigma bonds: 3c-2e bent bond · 3c-4e Hydrogen bond, Dihydrogen bond, Agostic interaction · 4c-2e Pi bonds: π backbonding · Conjugation · Hyperconjugation · Aromaticity · Metal aromaticity Delta bond: Quadruple bond · Quintuple bond · Sextuple bond Coordinate covalent bond · Hapticity Ionic bonds Cation-pi interaction · Salt bridge Metallic bonds Metal aromaticity Weak Hydrogen bond Dihydrogen bond · Dihydrogen complex · Low-barrier hydrogen bond · Symmetric hydrogen bond · Hydrophile Other noncovalent van der Waals force · Mechanical bond · Halogen bond · Aurophilicity · Intercalation · Stacking · Entropic force · Chemical polarity other Disulfide bond · Peptide bond · Phosphodiester bond Note: the weakest strong bonds are not necessarily stronger than the strongest weak bonds Retrieved from http://en..org/wiki/Aurophilicity Categories: Chemistry stubs | Chemical bonding | Gold Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page This page was last modified on 31 May 2008, at 22:22
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