{(tris(2-aminoethyl)amine)(adenine)(monochloro)nickel(II)} chloride | 147361-20-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 咪唑并嘧啶类
• 英文名称: {(tris(2-aminoethyl)amine)(adenine)(monochloro)nickel(II)} chloride
• CAS: 147361-20-4
• 化学式: C₁₁H₂₃ClN₉Ni*Cl
• 分子量: 410.96
• InChiKey: WCBKHYXBIWAMCE-UHFFFAOYSA-L

反应信息

• 作为产物：
  描述：

  腺嘌呤 、 三(2-氨基乙基)胺 、 nickel(II) chloride hexahydrate 以 乙醇 为溶剂， 生成 {(tris(2-aminoethyl)amine)(adenine)(monochloro)nickel(II)} chloride
  参考文献：
  名称：

  New selective nickel(II)-N3 nitrogen bond in adenine: Synthesis and structure of [(tren) (adenine) (monochloro)nickel(II)] chloride and [(tren)(imidazole)(monoaqua)nickel(II)] dichloride

  摘要：

  With the aim to obtain further insight into the nature of the Ni(II)-nitrogen bond in complexes with nucleobases, we have synthesized two novel Ni(II) ternary complexes constituted by Ni(II), tris(2-aminoethyl)amine (tren) and neutral adenine (AdH) or imidazole (ImH). The reaction of NiCl2.6H2O with tren and imidazole yields the ternary [Ni(tren)(ImH)(H2O)]Cl2.H2O complex and the same reaction with adenine instead of imidazole gives the ternary [Ni(tren)(AdH)Cl]Cl complex. The complexes have been studied by spectrophotometric and spectroscopic measurements and by X-ray diffraction. The ternary complex of adenine is monoclinic, space group C2/c, and exhibits a pseudo-octahedral geometry, being Ni(II) coordinated to the four nitrogen atoms of the tetradentate tren ligand, to a Cl- ion and to the pyrimidine N3 site of a neutral adenine. Such an exclusive Ni-N3 bonding [2.081(4)angstrom] is now reported for the first time. The ternary complex of imidazole is monoclinic, space group P2(1)/n. Its pseudo-octahedral geometry is similar to that found in the above adenine complex although a water molecule instead of a Cl-ion is now present in the coordination sphere. In fact, Ni(II) is coordinated to tetradentate tren, to the imidazole N1 nitrogen and to a water molecule. Electronic and H-1 NMR spectra in solution indicate that the octahedral structures found in the solid state are substantially maintained in solution. Furthermore, the present investigation suggests that the adenine Ni-N3 and imidazole Ni-N1 bonds have the same chemical nature, involving mainly sigma- and only partially pi-bonding. The Ni-N3 bonding is discussed in connection with biological implications and possible applications.

  DOI：

  10.1007/bf01195446