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Synthesis and characterization of a tetranuclear copper(Ⅱ) complex with a chiral Schiff base ligand

Hua Xiang  Long Jiang  Huan-Yong Li  Xiao-Dan Zheng  Yu Li  
【摘要】:正The title complex l-[Cu~Ⅱ_4(Hvap)_2(vap)_2(MeOH)_2](CIO_4)_2 1 has been synthesized and characterized by EA. IR,TGA,solid-state CD spectra and X-ray single-crystal analyses(l-H_2vap'.a Schiff base ligand derived from the condensation of o-vanillin and l-2-amino-3-phenyl-l-propanol).Complex 1 crystallizes in monoclinic system,chiral space group P2_1 with a =10.4257(18).b = 21.695(4),c = 15.721(3)A,β= 94.443(3).V= 3545.1(11) ~3,Z=2,Cu_4C_(70)H_(78)N_4O_(22)Cl_2.Mr= 1652.42,D_c= 1.548 g/cm~3, F(000)= 1704 andμ(MoKα) = 1.338 mm~(-1).The final R = 0.0682 and wR = 0.1420 for 6170 observed reflections with I 2σ(I) and R = 0.1775 and wR = 0.1830 for all data.The structure of complex 1 contains a boat-shaped(Cu_4O_4} motif.The solid-state CD spectra confirm the chiral nature of complex 1.

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