In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 2213-63-0, name is 2,3-Dichloroquinoxaline, introducing its new discovery. Safety of 2,3-Dichloroquinoxaline
Metal coordination polymers of 2,3-bisimidazol-1-ylquinoxaline: Syntheses, crystal structures, and luminescent properties
Three new metal-organic coordination polymers, namely, [Zn(mu 2-BiImQuin)(OAc)2]·H2O (1), [Zn(mu2-BiImQuin)2(H2O)2] 2·4Cl·H2O (2), and [Mn(mu2- BiImQuin)2(N3)2]·4H2O (3) were prepared by reaction of the corresponding transition metal salt with new rigid ligand 2,3-bisimidazol-1-ylquinoxaline (L) with diffusion or solution methods (BiImQuin = 2,3-bisimidazol-1-ylquinoxaline). All the complexes were characterized by elemental analysis, IR, TGA, PXRD, and single crystal X-ray diffraction determination. A one-dimensional single chain was observed in complex 1, however one-dimensional bead-like double chains were observed in complexes 2 and 3. In the three complexes, the rigid didentate ligands bridged the metal ions into similar “zigzag” chain, and two “zigzag” chains are arranged into bead-like double chain in complexes 2 and 3, where each metal ion is coordinated with four different didentate BiImQuin rather than two. On the other hand, the anions do great influence on the final supramolecular structure through coordination behavior and hydrogen-bonding interactions. The complexes 1 and 2 display strong room temperature photoluminescence in visible region, which may be assigned to ligand-to-metal charge-transfer. Copyright
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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1616 | ChemSpider