New discoveries in chemical research and development in 2021. As an important bridge between the micro, chemistry is one of the main methods and means for humans to understand and transform the material world. In an article, author is Qu, Yao, once mentioned the application of 301353-96-8, Product Details of 301353-96-8, category is benzoxazole. Now introduce a scientific discovery about this category.
Three cuprous coordination polymers, namely: {[Cu(BBO)(3)]center dot PF6}n (1), {[Cu(BBO)(2)(CH3CN)(2)]center dot BF4}(n) (2) and {[Cu(BBO)(2)(SPPh3)]center dot BF4}n (3), bearing a bisbenzoxazole ligand, 2,2′-(1,4-butanediyl)bis-1,3-benzoxazole (BBO), have been synthesized, and structurally characterized by elemental analyses, IR, UV-Vis and single-crystal X-ray diffraction. The structural analysis revealed that the structures of coordination polymers I and 3 are both three-coordinated and show distorted trigonal planar geometry, but 2 is four-coordinated and a slightly distorted tetrahedron environment. In coordination polymer 1, adjacent copper(I) ions were bridged by three independent BBO to form a two-dimensional planar layer framework in which PF6- anion is filled in the hole. Two BBO link Cu(I) ions into a one-dimensional zigzag chain in coordination polymer 2, while acetonitrile as an ancillary ligand distributed on both sides of the one-dimensional chain. Coordination polymer 3 exhibits a single-stranded helix chain structure by two BBO bridging adjacent copper(I) ions. Luminescence properties investigation show that 1 have two emission peaks, which attributed to pi-pi* and n-pi* transitions. However 2 and 3 only had one emission peak, which may be attributed to [MLCT(d(10)(Cu) -> pi*]. This may be due to the synergy of the auxiliary ligands in coordination polymers 2 and 3. The cyclic voltammogram of 1-3 represent quasi-reversible Cue(2+)/Cu+ pairs. (C) 2019 Elsevier Ltd. All rights reserved.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem