Sarcher, Christian; Luehl, Anja; Falk, Florian C.; Lebedkin, Sergei; Kuehn, Michael; Wang, Cong; Paradies, Jan; Kappes, Manfred M.; Klopper, Wim; Roesky, Peter W. published the artcile< [2.2]Paracyclophanediyldiphosphane Complexes of Gold>, Electric Literature of 325168-88-5, the main research area is paracyclophanediyl diphosphine gold complex preparation crystal mol structure; alkyne hydroamination catalyst paracyclophanediyl diphosphine gold chloride complex; phosphorescence paracyclophanediyl diphosphine gold chloride complex.
Authors have prepared digold(I) complexes with the rigid-backbone diphosphine ligands PhanePhos, xyl-PhanePhos, and Ph2-GemPhos. All complexes were characterized by single-crystal x-ray diffraction, NMR, IR, Raman, and photoluminescence (PL) spectroscopy. [PhanePhos(AuCl)2] and [GemPhos(AuCl)2] show a very similar ligand scaffold, but different (aurophilic vs. nonaurophilic) intramol. Au-Au distances. Absorption and PL spectra of both compounds are quite similar. Theor. investigations reveal that the excited states are of different character (i.e., influenced by the Au-Au contacts). The resp. transition energies, however, lie close to each other, thus resulting in similar exptl. spectra. The gold atoms appear to produce a significant heavy-atom effect in the electronic relaxation dynamics. Thus, [PhanePhos(AuCl)2] and [GemPhos(AuCl)2] both show bright-green millisecond-long phosphorescence at low temperatures, although the latter is quenched at ambient temperature [PhanePhos(AuCl)2] and [GemPhos(AuCl)2] were also used as catalysts in the intra- and intermol. hydroamination of alkynes. Good to quant. conversions on a reasonable time scale were observed The overall performance of these catalysts in the studied reactions was similar, showing that Au-Au contacts do not have a major influence on the catalytic performance.
European Journal of Inorganic Chemistry published new progress about Alkynes Role: RCT (Reactant), RACT (Reactant or Reagent). 325168-88-5 belongs to class chiral-phosphine-ligands, and the molecular formula is C48H50P2, Electric Literature of 325168-88-5.
Referemce:
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate