SYNTHESIS AND CRYSTAL STRUCTURE OF AZACROWN (2, 2) DINITRATE [C_(12)H_(28)O_4N_2] (NO_3)_2

• 出 处: 结构化学
• 发表日期: 1992年02期
• 关键词: nitrate monoclinic symmetry bridged asymmetric bonds bidentate crown lanthanide

[C12H28O4N2](NO3)2, Mr = 388. 45, monoclinic space group P21/ n,a = 7. 811(2), b = 10.626(4), c= 11. 823(6) A , β=106.51(3)°, Z = 2, Dc = 1.37 gem-3, V = 940. 8(7) (?)3 F(000) = 416, μ(MoKα) =1. 3 cm-1, R =0. 044 for 1373 reflections. The structure contains prdtonated azacrown [H2(2,2)]2+ and two (NO3-) which are bridged by four hydrogen bonds O(nitrate) ...H-N(crown). The ion [H2(2,2)]2+ in the title crystal lies on the crystallographic center of symmetry. There is half a [H2(2,2)]2+ and one NO3- in an asymmetric unit.

(C12H28O4N2) (NO3) 2, Mr = 388. 45, monoclinic space group P21 / n, a = 7. 811 (2), b = 10.626 (4), c = (3) °, Z = 2, Dc = 1.37 gem-3, V = 940. 8 (7) (?) 3 F (000) = 416, μ (MoKα) = 1.3 cm -1, R = 0 . 044 for 1373 reflections. The structure contains prdtonated azacrown [H2 (2,2)] 2+ and two (NO3-) which are bridged by four hydrogen bonds O (nitrate) ... HN (crown) (2,2)] 2+ in the title crystal lies on the crystallographic center of symmetry. There is a half a [H2 (2,2)] 2+ and one NO3-in an asymmetric unit.