The transformation of simple hydrocarbons into more complex and valuable products has revolutionised modern synthetic chemistry. This type of reactivity has quickly become one of the cornerstones of modern catalysis . 499-40-1, Name is (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal, molecular formula is C12H22O11. In a Article，once mentioned of 499-40-1, Reference of 499-40-1
Four mixed-ligand complexes, cis-Rh[(bipy)(HDPA)Cl2]Cl (1), cis-[Rh(phen)(HDPA)Cl2]Cl (2), cis-[Rh(bipy)(DPA)Cl2] (3), and cis-[Rh(phen)(DPA)Cl2] (4) (where bipy = 2,2?-bipyridine, phen = 1,10-phenantroline, HDPA = 2,2?-dipyridylamine, and DPA = the deprotonated form of 2,2?-dipyridylamine) have been synthesized and characterized. In slightly acidic solution and at low temperature (77 K), both complexes 1 and 2 show a broad, symmetric and structureless red emission with microsecond lifetime identified as dd* phosphorescence. In slightly basic solution, the deprotonated complexes (3 and 4) exhibit a broad and asymmetric blue emission, showing no vibrational structure with a lifetime in the order of microseconds. Emission of complex 3 reveals a blue shift of 0.81 mum -1 compared to the emission of complex 1 and that of complex 4 shows a blue shift of 0.77 mum-1 with respect to complex 2. Electrochemical data have also been obtained for the four complexes in CH 3CN. There are two reduction peaks observed for both complexes 1 and 2. Each peak is followed by a one-electron reduction at the metal, with an elimination of chloride during each reduction step, which is in consistent with the dd* phosphorescence assignment for the two complexes. For complexes 3 and 4, only a one-electron reduction process occurs at the metal with an elimination of chloride. Based on the luminescence and electrochemical data, the emission of complexes 3 and 4 are assigned as pid* phosphorescence. Results from density functional theory (DFT) calculations provide theoretical evidence in support of this pid* assignments.
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics