Chiroptical activity of BINAP-stabilized undecagold clusters

Article Abstract:

Undecagold cluster compounds {[Au.sub.11][BINAP.sub.4][X.sub.2]}[.sup.+] (BINAP=bidentate phosphine ligand 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl) were synthesized by chemical reduction process of the corresponding precursor complexes. The enantiomers {[Au.sub.11][R-BINAP.sub.4][X.sub.2]}[.sup.+] and {[Au.sub.11][S-BINAP.sub.4][X.sub.2]}[.sup.+] gave excellent mirror image CD-spectra.

Industrial Gas Manufacturing, Industrial gases, Phosphine, Phenyl compounds

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Chiral ordering and conformational dynamics for a class of oligo-phenylene-ethynylenes on Au(111)

Article Abstract:

Scanning tunneling microscopy (STM) is used to characterize the adsorption structures formed from a class of planar organic molecules on the Au(III) surface under ultrahigh vacuum conditions. The results have shown the molecule-molecule interactions to be of van der Waals character, despite the compounds having functional moieties capable of forming intermolecular hydrogen bonds.

Science & research, Research, Analysis, Observations, Hydrogen bonding, Hydrogen bonds, Scanning tunneling microscopy, Adsorption, Magnetic properties, Van der Waals forces

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