Li, Bin published the artcileGold(I)-Coordination Triggered Multistep and Multiple Photochromic Reactions in Multi-Dithienylethene (DTE) Systems, Computed Properties of 219537-97-0, the publication is Inorganic Chemistry (2012), 51(3), 1933-1942, database is CAplus and MEDLINE.
The preparation, characterization, and photochromic properties of a mononuclear Au(I) complex (100) with two identical DTE-acetylides and a dinuclear Au(I) complex (2000) with both DTE-acetylide and DTE-diphosphine are described. Both Au(I) complexes exhibit multistep and multiple photocyclization/cycloreversion reactions. Particularly, four-state and four-color photochromic switch is successfully achieved for the dinuclear Au(I) complex upon irradiation with appropriate wavelengths of light. In contrast, fully ring-closed form is unattained through multiple photocyclization for the two corresponding model organic compounds coupling with the same DTE units as Au(I) complexes but without Au(I)-participation. It is demonstrated that coordination of Au(I) ion to DTE-acetylides exerts indeed a crucial role in achieving stepwise and selective photocyclization and cycloreversion reactions for both Au(I) complexes, in which the coordinated Au(I) atom acts as an effective “barrier” to prohibit intramol. energy transfer between multi-DTE moieties.
Inorganic Chemistry published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Computed Properties of 219537-97-0.
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