二(2-氨乙基)-1,3-丙二胺与镍(Ⅱ)的配合物的合成和晶体结构 |
SYNTHESES AND CRYSTAL STRUCTURES OF N,N-BIS(2-AMINOETHYL)-1,3-PROPYL DIAMINE COMPLEXES WITH NICKEL(Ⅱ) |
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摘要: 本文报道了二(2-氨乙基)-1,3-丙二胺[缩写为(2,3,2)]与镍的两个新配合物:[(2,3,2)Ni(ImH)2](ClO4)2和[(2,3,2)2Ni2(Im)](ClO4)3的合成和晶体结构(其中ImH是咪唑)。配合物[(2,3,2)Ni(ImH2)](ClO4)2属于正交晶系,空间群Pna21, 晶胞参数为:a=16.798(3), b=15.724(3), c=8.891(2)?,Z=2。R1=0.0566, wR2=0.0659。在配合物正离子中,Ni与(2,3,2)的四个配位N原子和两个咪唑的两个配位N原子构成NiN6的八面体配位构型,(2,3,2)采取顺式构象。配合物[(2,3,2)2Ni2(Im)](ClO4)3属于单斜晶系,空间群C2,晶胞参数为:a=12.044(1), b=12.224(2), c=11.868(1)?;β=108.04°;Z=2, R1=0.0384, wR2=0.0516。在配合物正离子中,咪唑桥联两个等价的(2,3,2)Ni,每个镍原子都有四方锥的配位环境,(2,3,2)的四个配位N原子构成赤道平面,咪唑N原子占据轴向位置,分子内两个金属间的距离为6.190(3)?。 |
关键词: 二(2-氨乙基)-1,3-丙二胺 镍 配合物 晶体结构 |
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Abstract: The structure of new complex [(2,3,2)Ni(ImH)2](ClO4)2 where (2,3,2) is N,N′-bis(2-aminoehyl)-1,3-propyldiamine and ImH is imidazole, consists of a [(2,3,2)Ni(ImH)2]2- cation and two perchlorates. The nickel(Ⅱ) atom in the cation has distorted octahedronal coordination geometry and is six-coordinated by six N atoms, four of which from (2,3,2) and two from the imidazoles. The (2,3,2) adopts the cis-conformation. The structure of new complex [(2,3,2)2Ni2(Im)](ClO4)3 consists of one [(2,3,2)2Ni2(Im)]3+ cation and three perchlorates. Each copper atom in the cation is five-coordinate, with four (2,3,2) N atoms forming an approximate plane and a bridging imidazolate in the apical position of distorted tetragonal pyramid. The Ni-Ni separation is 6.11?. |
Keywords: N,N′-bis(2-aminoehyl)-1,3-propyldiamine nickel coordination compound crystal structure |
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朱海亮,卜为铭,唐雯霞.二(2-氨乙基)-1,3-丙二胺与镍(Ⅱ)的配合物的合成和晶体结构[J].无机化学学报,1999,15(4):423-428. |
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