One hexanuclear cobalt cluster [Co_(2) ^(Ⅲ)Co_(4) ^(Ⅱ)(L)_(4)(CH_(3) COO)_(2)(MeO)_(4)]·MeOH(1) was synthesized by the reaction of H_(2)L(H_(2)L=2-((2-hydroxy-4-methoxy-benzylideneamino)methyl)phenol) and Co(OA...One hexanuclear cobalt cluster [Co_(2) ^(Ⅲ)Co_(4) ^(Ⅱ)(L)_(4)(CH_(3) COO)_(2)(MeO)_(4)]·MeOH(1) was synthesized by the reaction of H_(2)L(H_(2)L=2-((2-hydroxy-4-methoxy-benzylideneamino)methyl)phenol) and Co(OAc)2·4 H2O in MeOH under solvothermal conditions. Complex 1 crystalizes in the triclinic space group P1 with a = 14.397(3), b = 16.625(3), c = 18.992(4) A, α = 109.47(3)°, β = 99.24(3)°, γ = 112.37(3)°, Dc = 1.464 g/cm^(3), Z = 2, V = 3741.7(2) A^(3), the final R = 0.0781 and w R = 0.1436 for 13051 observed reflections with I > 2σ(I). In the structure of 1, two cobalt ions are in 3+ oxidation states and four cobalt ions are in 2+ valence states. The six cobalt atoms are held together by six phenolate oxygen atoms from four L^(2–) ligands, four oxygen atoms from two chelating acetates and four μ3-O atoms from four Me O– groups. The six cobalt atoms are located at six corners of four defective cubanes. Thus, complex 1 displays tetracubane-like topology. Solid-state dc magnetic susceptibilities were measured for 1 in the 2.0~300 K range. Antiferromagnetic interactions were determined for 1.展开更多
基金Supported by the Natural Science Foundation of Yan’an University (YDY2017-08)Innovation and Entrepreneurship Training Program of College Students of China (S202010719031)+1 种基金the Natural Science Foundation of Yulin (CXY-2020-065)the National Natural Science Foundation of China (21763028)。
文摘One hexanuclear cobalt cluster [Co_(2) ^(Ⅲ)Co_(4) ^(Ⅱ)(L)_(4)(CH_(3) COO)_(2)(MeO)_(4)]·MeOH(1) was synthesized by the reaction of H_(2)L(H_(2)L=2-((2-hydroxy-4-methoxy-benzylideneamino)methyl)phenol) and Co(OAc)2·4 H2O in MeOH under solvothermal conditions. Complex 1 crystalizes in the triclinic space group P1 with a = 14.397(3), b = 16.625(3), c = 18.992(4) A, α = 109.47(3)°, β = 99.24(3)°, γ = 112.37(3)°, Dc = 1.464 g/cm^(3), Z = 2, V = 3741.7(2) A^(3), the final R = 0.0781 and w R = 0.1436 for 13051 observed reflections with I > 2σ(I). In the structure of 1, two cobalt ions are in 3+ oxidation states and four cobalt ions are in 2+ valence states. The six cobalt atoms are held together by six phenolate oxygen atoms from four L^(2–) ligands, four oxygen atoms from two chelating acetates and four μ3-O atoms from four Me O– groups. The six cobalt atoms are located at six corners of four defective cubanes. Thus, complex 1 displays tetracubane-like topology. Solid-state dc magnetic susceptibilities were measured for 1 in the 2.0~300 K range. Antiferromagnetic interactions were determined for 1.
