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Crystal Structure of Diethyl 1-(p-toluenesulfonamido)-p-chlorophenylmethylphosphonate
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作者 戴庆 王瑾玲 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1997年第1期48-51,共4页
The crystal and molecular structure of diethyl l-(p-toluenesulfon-amido ) - p chlofoPhenylmet hylphosphonate has been determined by X- ray d iffractionmethod- The crystal (C18,H23,ClNO5PS) is monoclinic with space gro... The crystal and molecular structure of diethyl l-(p-toluenesulfon-amido ) - p chlofoPhenylmet hylphosphonate has been determined by X- ray d iffractionmethod- The crystal (C18,H23,ClNO5PS) is monoclinic with space group P21/c, a =8. 162(6), b= l8. O64(7), c= l4. 362(4) A, β=96. 29(3)°, V=2lO4. 7 A3, M.=431, 88, Z=4, Dx= l. 364 g/cm3, μ, = 3. 765 cm-1, F(000) = 904, R=0. 047 andRw=0. 0049 for 998 reflections with I>3σ(I). The 1H NMR spetrum of the title com-pound shows that the two ethoxy groups are magnetic nonequivalent, which is in agree-ment with its X-ray analysis result- 展开更多
关键词 crystal structure magnetic nonequivalence herbicidal activity NMR
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Crystal Structure of O,O'-Diphenyl N-(o-methylphenyl)-P-toluenesulfonamidomethylphosphonate
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作者 戴庆 周游 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1998年第4期235-238,共4页
The 1H NMR spectrum of the title compound shows that the two hydrogen atoms at a-C are magnetic nonequivalence. To explain the nonequivalence phenomenon, the crystal and molecular structure of the title compound has b... The 1H NMR spectrum of the title compound shows that the two hydrogen atoms at a-C are magnetic nonequivalence. To explain the nonequivalence phenomenon, the crystal and molecular structure of the title compound has been determined by X-ray diffraction methed. The crystal (C27H26NO5PS) is monoclinic withspace group P21/c, a = 11. 310(4), b =20. 692(5), c =11. 826(4) A, β =112. 46(3)°, V = 2256(1) A3, Mr- 507. 55, Z = 4, Dx= 1. 319g/cm3, μ= 2. 179cm-1,F(000) =1064, R = 0. 054 and Rw= 0. 064 for 2405 renections with I≥>3δ(I). TheX-ray diffraction analysis reveals that the two hydrogen atoms at a-C are located at differeat magnetic environments, which can explain the nonequivalence phenomnon in 1HNMR spetrum. 展开更多
关键词 crystal structure magnetic nonequivalence biological activity NMR
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