“…In general, a broadening and shift to high ppm values of all the peaks were observed, consistent with the presence of a paramagnetic complex in the two Co containing systems compared to the neat EG : ChCl (4.5 : 1). [69][70][71] All the chemical shift values of protons in the neat solvent system and the two Co containing systems are given in Table 1.…”
Co(ii) speciation is reported for two ethylene glycol : choline chloride (4.5 : 1) systems depending on the cobalt source using several spectroscopic techniques (e.g. UV-Vis, NMR, EPR, FTIR) in combination with molecular dynamics simulations.
“…In general, a broadening and shift to high ppm values of all the peaks were observed, consistent with the presence of a paramagnetic complex in the two Co containing systems compared to the neat EG : ChCl (4.5 : 1). [69][70][71] All the chemical shift values of protons in the neat solvent system and the two Co containing systems are given in Table 1.…”
Co(ii) speciation is reported for two ethylene glycol : choline chloride (4.5 : 1) systems depending on the cobalt source using several spectroscopic techniques (e.g. UV-Vis, NMR, EPR, FTIR) in combination with molecular dynamics simulations.
This survey gathered works on various aspects of indirect spin–spin coupling constants: new calculation approaches, comparison of calculated and experimental values, indirect spin–spin coupling constants involving heavy nuclei, through space coupling constants and measurements in the gas phase. This review covers the period from May 2022 to April 2023.
Treating the conic tetra-para-ethylacetato-calix[4]arene 1 with 2.2 equivalents of K2CO3 and 4 equivalents of 6-bromomethyl-6’-methyl-2,2’-bipyridine afford the expected fully substituted podand, mainly in its 1,3-alternate conformation 2. This tube-like bipyridyl...
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