摘 要: | Two novel complexes Zn(NIT3-py)(ip)]n 1 and Zn(im3-py)(ip)]n 2 (NIT3-py = 2-(3'-pyridyl)-4,4,5,5,-tetramethylimidazoline-1-oxyl-3-oxide, im3-py = 2-(3'-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl, ip = isophthalate) have been synthesized and structurally determined by X-ray diffraction. Crystal data for 1: C32H36N6O8Zn, Mr= 698.04, monoclinic, space group Cc with a = 23.600(3), b = 10.2073(12), c = 13.4027(16)A,β = 92.586(2)°, V = 3225.3(7) A^3, Dc= 1.438 g/cm^3, F(000) = 1456,μ(MoKa) = 0.822 mm^-1, Z = 4, the final R = 0.0390 and wR = 0.1032 for 6037 independent reflections with Rint = 0.0214. Crystal data for 2: C32H36N6O6Zn, Mr= 666.04, monoclinic, space group C2/c with a = 24.434(4), b = 13.543(2), c = 10.2379(16) A, β = 109.024(2)°, V = 3202.8(9)A3 Dc= 1.381 g/cm^3, F(000) = 1392,μ(MoKa) = 0.820 mm^-1, Z = 4, the final R = 0.0304 and wR = 0.0658 for 2833 independent reflections with Rint = 0.0307. X-ray analysis reveals that both Zn( Ⅱ ) ions are four-coordinated by two pyridyl-N atoms from nitroxide radicals and two carboxylate oxygen atoms to form distorted tetrahedral geometries. Each isophthalate dianion binds two Zn( Ⅱ ) ions in a monodentate mode, leading to a I-D chain structure.
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