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Syntheses and Crystal Structures of Zinc(II) and Nickel(II) Complexes Involving Reduced Nitroxide Radicals

Syntheses and Crystal Structures of Zinc(II) and Nickel(II) Complexes Involving Reduced Nitroxide Radicals
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摘要 Two novel complexes [Zn(Him-thz)2(NO3)]·NO3 1 and [Ni(Him-thz)2(NO3)]·NO3 2 (Him-thz = 2-(2'-thiazole)-4,4,5,5-teramethyl-dihydro-1H-imidazolyl-1-hydroxy) have been prepared and structurally characterized by X-ray diffraction method. Both complexes crystallize in orthorho- mbic, space group P21 21 2, Z = 2. Crystal data for 1: ZnC20H30N8O8S2, Mr = 640.2, a = 13.1630(14), b = 10.5149(11), c = 10.6670(11) A°, V= 1476.4(3)A°^3, Dc = 1.440 g/cm^3, μ(MoKa) = 1.028 mm^-1, F(000) = 664, R = 0.0398 and wR = 0.0901 for 2131 observed reflections with I 〉 2σ(I). Crystal data for 2: NiC20H30N8O8S2, Mr = 633.36, a = 13.1611(7), b = 10.4833(6), c = 10.6928(6) .4,, V = 1475.30(14)A°^3, Dc = 1.426 g/cm^3 ,μ(MoKa) = 0.854 mm^-1, F(000) = 660, R = 0.0281 and wR = 0.0797 for 3099 observed reflections with I 〉 2σ(I). X-ray analysis reveals that the crystal structures consist of [M(Him-thz)2(NO3)]^+ (M = Zn, Ni) moiety and a NO3^- anion. Both Zinc(Ⅱ) and Nickel(Ⅱ) ions are six-coordinated with distorted octahedral geometries. Two novel complexes [Zn(Him-thz)2(NO3)]·NO3 1 and [Ni(Him-thz)2(NO3)]·NO3 2 (Him-thz = 2-(2'-thiazole)-4,4,5,5-teramethyl-dihydro-1H-imidazolyl-1-hydroxy) have been prepared and structurally characterized by X-ray diffraction method. Both complexes crystallize in orthorho- mbic, space group P21 21 2, Z = 2. Crystal data for 1: ZnC20H30N8O8S2, Mr = 640.2, a = 13.1630(14), b = 10.5149(11), c = 10.6670(11) A°, V= 1476.4(3)A°^3, Dc = 1.440 g/cm^3, μ(MoKa) = 1.028 mm^-1, F(000) = 664, R = 0.0398 and wR = 0.0901 for 2131 observed reflections with I 〉 2σ(I). Crystal data for 2: NiC20H30N8O8S2, Mr = 633.36, a = 13.1611(7), b = 10.4833(6), c = 10.6928(6) .4,, V = 1475.30(14)A°^3, Dc = 1.426 g/cm^3 ,μ(MoKa) = 0.854 mm^-1, F(000) = 660, R = 0.0281 and wR = 0.0797 for 3099 observed reflections with I 〉 2σ(I). X-ray analysis reveals that the crystal structures consist of [M(Him-thz)2(NO3)]^+ (M = Zn, Ni) moiety and a NO3^- anion. Both Zinc(Ⅱ) and Nickel(Ⅱ) ions are six-coordinated with distorted octahedral geometries.
出处 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第2期209-213,共5页 结构化学(英文)
基金 This work was supported by the National Natural Science Foundation of China (No. 20471026) and the Natural Science Foundation of Henan province (No. 0311021200)
关键词 crystal structure nitronyl nitroxide radical Zn(Ⅱ) complex Ni(Ⅱ) complex crystal structure, nitronyl nitroxide radical, Zn(Ⅱ) complex, Ni(Ⅱ) complex
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