In heterogeneous catalysis, the catalyst is in a different phase from the reactants. category: pyridazine, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 141-30-0, name is 3,6-Dichloropyridazine. In an article£¬Which mentioned a new discovery about 141-30-0
Chelation versus cyclometalation in a cationic Dppn-RhI complex – A unique rearrangement of norbornadiene via C-H activation of the pyridazine ring
The tetradentate ligand 3,6-bis(2-pyridyl)pyridazine (dppn) was treated with cationic RhI precursors. The mononuclear complexes [Rh(dppn)(NBD)]BF4 (1) and [Rh(dppn)(COD)]BF4 (5) were obtained in quantitative yield when treating dppn with [Rh(NBD)2]BF4 or [Rh(COD)2]BF4 respectively. Treatment of 1 with a second equivalent of the metal precursor [Rh(NBD)(CH3CN)2]BF4 led to the dinuclear complex [Rh2(dppn-H)(NBD)(eta-C7H9) (CH3CN)2](BF4)2 (2) [dppn-H = mu-C4HN2(C5H4N)2-3, 6], a mixed RhI-RhIII complex. This complex arises from C-H activation of the pyridazine ring, followed by a unique rearrangement of the NBD ligand. Compound 2 was also obtained directly by treating dppn with 2 equiv. of [Rh(NBD)(CH3CN)2]BF4. The complex [Rh2(dppn-H)(NBD)(eta1-C7H9) (CH3OH)2(CH3CN)](BF4)2 (4) was obtained by dissolving 2 in methanol. Full characterization of compounds 1, 4 and 5 included an investigation by 1H-15N GHMBC NMR spectroscopy and single-crystal X-ray structures of 1 and 4. Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2003.
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Pyridazine – Wikipedia,
Pyridazine | C4H4N1678 – PubChem