Preparation,Structure and Properties of Dinuclear Cu(Ⅱ) Schiff Base Complexes with Different Type of Bridging Groups

Abstract

Abstract: Three dinuclear Cu(Ⅱ) complexes with oxalate (Cu₂(L1)₂(ox), 1), acetate (Cu₂(AcO)(L2)₂ BF₄, 2) and phenolate group(Cu₂(L3)₂ (ClO₄)₂, 3)as bridging group, individually, were synthesised, and the crystal structures of composite complex Cu₂(L1)₂(ox) · Fe(OH)₂(H₂O)₄ ClO₄·H₂O (1') and complexes 2 and 3 were determined. X-ray crystal structure analyses comfirm that the crystals of 1', 2 and 3 exist in Fddd, P2₁ / c and P2₁ / c space group, respectively. The crystal cell parameters of 1' are: a =2.4390(4) nm, b = 3.0538(6) nm, c =1.8494(6) nm, α=β=γ =90.00° and these of 2 are:a =0.847(1) nm, b =2.6542(8) nm, c =1.4100(6) nm, β =91.34(6)°; 3: a =0.7646(3) nm, b =1.6983(3) nm, c =2.4417(3) nm, β =97.11°. Electrochemical investigations of 1 and 3 show that bicopper(Ⅱ) centre experiences a mix-valence species during the course of reduction scan.

Key words: Schiff base, Dinuclear complex, Crystal structure

CLC Number:

O614.12

TrendMD:

YIN Ye-Gao, CHEUNG Chung-Kai, Huang-Yong-De . Preparation,Structure and Properties of Dinuclear Cu(Ⅱ) Schiff Base Complexes with Different Type of Bridging Groups[J]. Chem. J. Chinese Universities, 1998, 19(10): 1546.

References

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