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Synthesis and Crystal Structure of 2-(2-Ethyl-1H-imidazol-1-yl)-1-hydroxy- ethane-1,1-diyldiphosphonic Acid (EIHDP)
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作者 王洪勇 邹霈 +4 位作者 谢敏浩 何拥军 吴军 刘娅灵 吴昊 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第11期1635-1639,共5页
The crystal structure of the title compound (C7H14N2O7P2, Mr = 300.14) was determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P1 with a = 8.258(3), b = 8.886(3), c = 9.... The crystal structure of the title compound (C7H14N2O7P2, Mr = 300.14) was determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P1 with a = 8.258(3), b = 8.886(3), c = 9.275(3) A, a = 96.669(3), β = 115,706(3), γ= 104.467(3)°, V= 573.8(3) A^3, Z = 2, Dc = 1.737 g/cm^3, 2(MoKa) = 0.71073, F(000) = 720,μ(MoKa) = 0.41 mm^-1 R = 0.030 and wR = 0.078. A total of 1970 unique reflections were collected, of which 1742 with I 〉 2σ(I) were observed. EIDHP has a structure similar to zoledronic acid (ZL). ZL is a potent bone antiresorptive bisphosphonate drug having significant activity against several parasitic protozoa. EIHDP has inner-salt character, consisting of a negatively charged PO3 group and a positively charged N(1) atom. The crystal structure is stabilized by interrnolecular hydrogen bonds of O-H…O and N-H…O. 展开更多
关键词 crystal structure eidhp bisphosphonate synthesis
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Crystal Structure of 1-(N-Dichlorophosphoryl-N-cyclohexyl)-amino-1-dichlorophosphinyl-chloromethane
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作者 WUMing-Shu CHENRu-Yu HUANGYou 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第8期886-889,共4页
The crystal and molecular structures of 1-(N-dichlorophosphoryl-N-cyclohexyl) amino-1-dichlorophosphinyl-chloromethane have been determined by X-ray diffraction. The crystal (C7H12Cl5NO2P2) is of orthorhombic, space g... The crystal and molecular structures of 1-(N-dichlorophosphoryl-N-cyclohexyl) amino-1-dichlorophosphinyl-chloromethane have been determined by X-ray diffraction. The crystal (C7H12Cl5NO2P2) is of orthorhombic, space group Pbca with a = 11.104(7), b = 11.290(6), c = 24.403(14) , V = 3059(3) 3, Mr = 381.37, Z = 8, Dc = 1.656 g/cm3, ?= 1.146 mm-1, F(000) = 1536, the final R = 0.0391 and Rw = 0.0778 for 2657 observed reflections with I > 2s(I). The crystallographic results of the title compound show that the N atom is not a conventionally sp3 hybridized tetrahedron but an sp2 hybridized triangular planar nitrogen. 展开更多
关键词 crystal structure bisphosphonate derivatives synthesis NMR
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