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After the preparation of 1,4-bis(4,5-dihydro-1H-imidazol-2-yl)benzene(bdib), a nitrogen heterocycle with potential coordination manners of both cis-and trans-configuration forms, three complexes, including cis-[Cu2(bdib)2(μ-OCH3)2]Cl2·2MeOH(1), trans