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One novel entangled cobalt compound,{[Co 3 (nbta) 2 (4,4-bpy) 2 (H 2 O) 2 ](H 2 O) 2 } n (1,H 3 nbta=5-nitro-1,2,3-benzenetricarboxylic acid,4,4-bpy=4,4-bipyridyl),was prepared and characterized by X-ray diffraction,magnetism,elemental analysis,XPS,TGA and IR spectroscopy.The crystal of 1 crystallizes in monoclinic,space group Pc with a=13.0717(16),b=11.4167(14),c=15.9342(19),β=90.5190(10)o,V=2377.9(5)3,Z=2,C 48 H 36 Co 3 N 8 O 20,M r=1221.64,D c=1.706 g/cm 3,F(000)=1242 and μ(MoKα)=1.128 mm-1.The final R=0.0497 and wR=0.1461 for 4185 observed reflections with I > 2σ(I) and R=0.0721 and wR=0.1619 for all data.X-ray diffraction analyses revealed that Co(1) is linked by the nbta 3-ligands to form the ladder shape along the c axis,which is further extended into two-dimensional networks via the joint of Co(2) along the a axis.Moreover,these two dimensional motifs are interconnected by the 4,4-bpy bridges to form a complicated 3-D polymeric framework.Magnetic measurements revealed that compound 1 shows strong antiferromagnetic property.
One novel entangled cobalt compound, {[Co 3 (nbta) 2 (4,4-bpy) 2 (H 2 O) 2] (H 2 O) 2} n 2,3-benzenetricarboxylic acid, 4,4-bpy = 4,4-bipyridyl was prepared and characterized by X-ray diffraction, magnetism, elemental analysis, XPS, TGA and IR spectroscopy.The crystal of 1 crystallizes in monoclinic, Space group Pc with a = 13.0717 (16), b = 11.4167 (14), c = 15.9342 (19) β, β = 90.5190 (10) o, V = 2377.9 The final R = 0.0497 and wR = 0.1461 for 4185 (MoKα) = 1.128 mm-1 for 36 Co 3 N 8 O 20, M r = 1221.64, D c = 1.706 g / cm 3 Observed reflections with I> 2σ (I) and R = 0.0721 and wR = 0.1619 for all data. X- ray analysis analysis revealed that Co (1) is linked by the nbta 3-ligands to form the ladder shape along the c axis, which is further extended into two-dimensional networks via the joint of Co (2) along the a axis. Moreover, these two dimensional motifs are interconnected by the 4,4-bpy bridges to form a complicated 3-D polymeric framework. revealed that compound 1 shows strong antiferromagnetic property.