Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Silver(I) trifluoromethanesulfonate, is researched, Molecular CAgF3O3S, CAS is 2923-28-6, about Cu(II) and Ag(I) complexes of the pyrazole-derived diorganoselenide (pzCH2CH2)2Se. Synthesis, solid state structure and solution behavior.Electric Literature of CAgF3O3S.
The diorganoselenide (pzCH2CH2)2Se (R2Se (1), pz = pyrazole) was prepared by reacting the in situ obtained Na2Se with 1-(2-bromoethyl)-1H-pyrazole in a water/ethanol mixture Copper(II) and silver(I) complexes of type [CuX2{Se(CH2CH2pz)2}] [X = Cl (2), Br (3), NO3 (4), ClO4 (5)] and [AgX{Se(CH2CH2pz)2}] [X = OTf (6) (OTf = CF3SO3), NO3 (7), ClO4 (8)] were obtained by reacting the ligand 1 with the appropriate copper(II) and silver(I) salt in 1:1 molar ratio. The ligand and the metal complexes were investigated by appropriate spectroscopic methods, both in solution and in solid state: multinuclear NMR (1H, 13C, 19F, 77Se), UV-Vis spectroscopy, ESI mass spectrometry, IR spectroscopy and molar conductivity The metal complexes 2, 3 and 6-8 behave as 1:1 electrolytes in solution, while 4 and 5 behave as 1:2 electrolytes. The mol. structures of complexes [CuX2{Se(CH2CH2pz)2}] [X = Cl (2), Br (3), NO3 (4)], [Cu(ClO4)2{Se(CH2CH2pz)2}(H2O)] (5·H2O) and [AgOTf{Se(CH2CH2pz)2}] (6) were determined by single-crystal X-ray diffraction. The (pzCH2CH2)2Se ligand acts as a N,Se,N chelating moiety in 2, 3, 4 and 5·H2O and as a bridging, tetraconnective 2 x N,Se unit in 6.
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Reference:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem