Unusual hydrothermal synthesis of a heteroaromatic macrocyclic complex

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Hydrothermal treatment of 2,3-bis(2',6"-bipyridyl)quinoxaline, molybdenum trioxide, cupric acetate and water unexpectedly forms the Cu(II) complex of a planar, macrocyclic 2-acyl-6,2'-bipyridyl dimer, imbedded within a copper benzotrizolate-octamolybtate matrix. X-ray crystallographic characterization of this material, and scalar relativistic ZORA DFT modeling of the complex dication are presented.