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Novel tetranuclear copper complexes,Cu4(OH)2(ClO4)3 (HA).H2O(1)and Cu4(ClO4)5(H3B).3H2O(2),were synthesized by reacting 1,5-bis(1'-phenyl-3'-methyl-5'-pyrazolone-4')-1,5--pentanedione with 1,3-propanediamine and 2-hydroxyl-1,3-propanediami