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大豆甙元磺酸钠与硫酸亚铁铵在一定条件下可以形成新的配合物,该配体与金属盐的摩尔比为1∶1时,可培养出大豆甙元磺酸铁( II)配合物的单晶。通过X射线单晶衍射测定其结构,该配合物属于Triclinic晶系,P-1空间群,晶胞参数 a =6．7811(15)?, b =14．164(3)?, c =20．534(5)?,α=104．481(3)°,β=94．687(3)°,γ=94．458(2)°,V=1893．2(8)?3。“,”3′-dadzein sulfonic sodium and ammonium iron ( II) sulfate can form a new coordination com-plex under a certain condition. 3′-dadzein sulfonic iron( II) was obtained when the mole ratio of ligand and metal-lic salts mixed together was 1∶1. Single-crystal X-ray diffraction analysis revealed that the complex crystallizes in the Triclinic,P-1 space group ,with a=6. 781 1(15) ?,b=14. 164(3) ?,c=20. 534(5) ?,α=104. 481(3)°,β=94. 687(3)°,γ=94. 458(2)°,V=1 893. 2(8) ?3.