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Technology Process of 1,2-O-isopropylidene-α-D-5,6,6'-(2H3)-glucofuranose

1,2-O-isopropylidene-α-D-5,6,6'-(2H3)-glucofuranose

Base Information
  • Chemical Name:1,2-O-isopropylidene-α-D-5,6,6'-(2H3)-glucofuranose
  • CAS No.:4709-04-0
  • Molecular Formula:C9H16O6
  • Molecular Weight:223.199
  • Hs Code.:
1,2-O-isopropylidene-α-D-5,6,6'-(<sup>2</sup>H<sub>3</sub>)-glucofuranose

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Refernces

Unusual nitro-coordination of europium(iii) and terbium(iii) with pyridinyl ligands

10.1039/c2dt31308a

The study investigates a new family of ligands based on picoline, bipyridine, and terpyridine, each containing a nitro moiety, and their coordination and sensitization abilities for lanthanide ions, specifically europium(III) (Eu(III)) and terbium(III) (Tb(III)). The researchers synthesized four ligands: 6-nitro-2,2'-bipyridine (5a), 6'-methyl-6-nitro-2,2'-bipyridine (5b), 6-nitro-2,2';6',2''-terpyridine (5c), and bis(pyridin-2-ylmethyl)(6-nitro-pyridin-2-ylmethyl)amine (6). These ligands were found to coordinate not only through the pyridine nitrogen but also through an oxygen atom of the nitro moiety. The study characterized three new complexes using X-ray single crystal diffraction: 5cTb (a terpyridine-nitro derivative with Tb(NO3)3), its Eu(III) analog 5cEu, and 6Eu (a tripodal amine with a nitro-derivatized pyridine with Eu(CF3SO3)3). All four ligands demonstrated the ability to sensitize Eu(III) and Tb(III) luminescence. The study also explored the photophysical properties of these ligands and their complexes, finding that while the ligands adequately positioned their singlet and triplet states for energy transfer, the process was inefficient, likely due to competing energy transfer pathways involving the nitro group.

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