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Investigations about the Chemistry of Tetraarylethene- and Iridium-Based Luminophores

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The diastereoselective synthesis of chiral coordination compounds with d metals proved the effectiveness of the pinene-bipyridine approach in predetermining the chirality at the metal centre. The strong Lewis acidic character of lanthanide cations required ...

EPFL2006

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A series of new mixed-ligand lanthanide complexes [Ln(hfa)3(4-cpyNO)]2 (Ln = SmIII-HoIII and TmIII; hfa- = hexafluoroacetylacetonate; 4-cpyNO = 4-cyanopyridine N-oxide) have been synthesised by treating the corresponding lanthanide hexafluoroacetylacetonat ...

2006

Low-dimensional supramolecular architectures at metal surfaces

Sebastian Stepanow

This thesis is concerned with supramolecular architectures assembled at metal surfaces. The investigations pursued two objectives. On the one hand, the focus was placed on the fabrication of low-dimensional surface-supported network structures by applying ...

EPFL2005

New tripodal N-heterocyclic carbene chelators for small molecule activation

Xile Hu

A review. In an effort to develop new tripodal N-heterocyclic carbene (NHC) ligands for small mol. activation, two new classes of tripodal NHC ligands TIMER and TIMENR were synthesized. The C-anchored tris(carbene) ligand system TIMER (R = Me, t-Bu) forms ...

2005

Isomer specific spectroscopy of metal clusters trapped in a matrix: Ag9

Wolfgang Harbich, Christoph Sieber

Clusters of metal atoms at a fixed size can assume different structural arrangements, known as isomers, which may have nearly the same energy. Therefore at given experimental conditions distribution of these isomers can be present. While the size selection ...

2004

The silver, copper and gold complexes of tripodal N-heterocyclic carbene (NHC) ligand, 1,1,1-tris[(3-methylimidazol-1-yl-2-ylidene)methyl]ethane were prepd. and characterized. The silver complex of the title ligand, TIMEMe was prepd. by reaction of [H3TIME ...

2004

The conformational analysis of a series of configurational isomers of 2-(hydroxymethyl)azepan-3,4,5,6-tetrols 1-4 has been carried out. H-1 NMR spectroscopic data, especially vicinal J couplings and nuclear Overhauser enhancements (NOE), assisted by molecu ...

2004

The molecular complex [Re(equivalent toC(t)Bu)(=(CHBu)-Bu-t)((CH2Bu)-Bu-t)2] (1) reacts with a silica partially dehydroxylated at 700 degreesC to give syn-2, [(equivalent toSiO)Re(equivalent toC(t)Bu)(=(CHBu)-Bu-t)((CH2Bu)-Bu-t)], as a single isomer accord ...

AMER CHEMICAL SOC2003

We have performed ab initio mol. dynamics simulations based on d. functional theory to characterize the structural, electronic, and dynamic properties of the three major isomeric forms of the title compd. In agreement with exptl. results, calcns. with two ...

2000

The elusive (E)-2-ethoxyvinyllithium can be readily generated in THF at -75 Deg from (E)-1-bromo-2-ethoxyethylene by halogen/metal exchange and subsequently trapped with electrophiles. Alkylation opens a convenient entry to (E)-configurated enethers. (E)-2 ...

1997