Related Products of 141-30-0, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 141-30-0, 3,6-Dichloropyridazine, introducing its new discovery.
New pyridazine-bridged NHC/pyrazole ligands and their sequential silver(I) coordination
A family of new pyridazine-bridged NHC/pyrazole ligand precursors HL 1-5 were prepared and fully characterized including analysis by XRD {HL1 = 3-[3-(2,6-diisopropylphenyl)-3H-imidazolium-1-yl]-6-(3- pyridin-2-yl-pyrazol-1-yl)-pyridazine, HL2 = 3-[3-(2,4,6- trimethylphenyl)-3H-imidazolium-1-yl]-6-(3-pyridin-2-yl-pyrazol-1-yl) -pyridazine, HL3 = 3-[3-(2,4,6-trimethylphenyl)-3H-imidazolium-1-yl]- 6-(3,5-dimethylpyrazol-1-yl)-pyridazine, HL4 = 3-(3-tert-butyl-3H- imidazolium-1-yl)-6-(3,5-dimethylpyrazol-1-yl)-pyridazine, HL5 = 3-[3-(2,4,6-trimethylphenyl)-3H-imidazolium-1-yl]-6-(3-methyl-5-phenylpyrazol-1- yl)-pyridazine, X = PF6- or BF4-}. Reaction of the ligand precursors with Ag2O yielded various silver(I) complexes whose structures have been elucidated crystallographically. In complexes [(L3)2Ag](PF6) (4) and[(L 4)2Ag](PF6) (4?) the single silver(I) ion is coordinated in a linear fashion by the NHC moieties of the two ligand strands. An NMR titration with AgBF4 reveals that 4 can bind two more silver(I) ions. The complex [(L5)2Ag2](PF 6)2 (5?) features an additional silver(I) centre bound to the two pyrazole rings, whereas in [(L3)2Ag 2](BF4)2 (6) ligand reshuffling has occurred to give antiparallel ligand strands with {CNHCNpyrazole} coordination of each metal ion. Secondary interactions with the pyridazine N-atom are observed in some cases. An additional third silver(I) ion can be accommodated between the central pyridazine bridges, as shown in [(L 3)2Ag3](PF6)2(BF 4) (7). The sequence of binding events and the identity of the species in solution have been investigated by NMR spectroscopy and ESI mass spectrometry. A family of new pyridazine-bridged ditopic ligands has been prepared, which provide both an organometallic NHC and a classic N-donor compartment. Two opposing strands of these ligands sequentially bind up to three silver(I) ions. Complexation starts at the NHC subunit and involves some ligand reshuffling to form a trisilver arrangement, which has been elucidated by NMR spectroscopy and X-ray crystallography. Copyright
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Related Products of 141-30-0. In my other articles, you can also check out more blogs about 141-30-0
Reference£º
Pyridazine – Wikipedia,
Pyridazine | C4H4N1957 – PubChem