New discoveries in chemical research and development in 2021. In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. 2343-89-7, Name is Methyl 2-fluoroacrylate, molecular formula is C4H5FO2. In an article, author is Habarurema, Gratien,once mentioned of 2343-89-7, Safety of Methyl 2-fluoroacrylate.
Rhenium(I) and (VII) complexes with cyclohex-1-enylolonium cation and bridging pyridyl derivatives are reported. Additionally, the CO-bridged pyridyl and their related compounds have shown interesting behaviour in their reactivity towards compounds containing two amino groups. The unusual cationic compound: (2,6-diaza-cyclohex-1-enylolonium)2-aza-benzoate (H(2)den), was isolated from the reaction mixture of 1,2-di(pyridin-2-yl)ethane-1,2-dione with propane-1,3-diamine in methanol. The latter ligand: H(2)den, was used in the synthesis of rhenium(I) complex in its reaction with [Re(CO)(5)Cl] that gave rise to novel rhenium(I) complex fac-[Re(CO)(3)(Hhdm)] (1). The surprising aspect in the formation of (1) is the modification of H(2)den which was stabilized into a coordinated six-membered pyrimidine ring, 1,4,5,6-tetrahydropyrimidin-2-yl)di(pyridin-2-yl)methanol (H(2)hdm) chelate. The derived ligand acts as a tridentate monoanionic N-2,O-donor ligand towards the fac-[Re(CO)(3)](+) core. Surprisingly, the 2-aza-benzoate counter-ion that was present in the used ligand is not displayed in the crystal structure of complex 1, and might have been stabilized into 2-aza-benzoic acid (picolinic acid). The reaction of the potential tridentate N-2,O-donor ligand 2,2 ‘-dipyridylketone (dpk) with trans-[ReOI2(OEt)(PPh3)(2)] led to the isolation of [ReO3(dpk center dot OH)] (2). The ligand H(2)den and the rhenium complexes were spectroscopically characterized, and the structures of H(2)den, 1 and 2 were established by X-ray diffraction.
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Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem