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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >'3+1=6+2' in Cu(II) coordination chemistry of 1H-pyrazole aza cryptands
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'3+1=6+2' in Cu(II) coordination chemistry of 1H-pyrazole aza cryptands

机译:1H-吡唑氮杂隐孢子的铜(II)配位化学中的“ 3 + 1 = 6 + 2”

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摘要

A polyazamacrocycle formed from two tris(2-aminoethyl) amine units connected by 1H-pyrazole units shows unique hexanuclear Cu(II) complexes by combination of two binuclear Cu(II) cryptand complexes through pyrazolate moieties belonging to both cryptands. The formation of these dimeric entities has been proven both in solution by potentiometric studies and mass spectroscopy and in the solid state by X-ray diffraction of crystals of three different batches of formulae [Cu-6(H-3L)(2)(H2O)(2)](TsO)(6) center dot 22H(2)O (2), [Cu-6(H-3L)(2)(NO3)(2)](NO3)(4) center dot 2H(2)O (3) and [Cu-6(H-3L)(2)Cl-2] Cl-4 center dot (C4H5N3O2)(2) center dot 14.35H(2)O (4). The hexanuclear unit in 2 and 4 can be viewed like three magnetically independent binuclear complexes with J = -366(3) cm(-1), g = 2.08(1) for 2 and J = -360(3) cm(-1), g = 2.07(1) for 4.
机译:由两个由1H-吡唑单元连接的三(2-氨基乙基)胺单元形成的多氮杂大环化合物通过两个双核Cu(II)隐链体配合物通过属于两个隐链体的吡唑酸酯部分的组合显示出独特的六核Cu(II)配合物。这些二聚体的形成已通过电位研究和质谱在溶液中得到证明,并且在固态中通过三种不同批次式[Cu-6(H-3L)(2)(H2O)的晶体的X射线衍射得到了证实)(2)](TsO)(6)中心点22H(2)O(2),[Cu-6(H-3L)(2)(NO3)(2)](NO3)(4)中心点2H (2)O(3)和[Cu-6(H-3L)(2)Cl-2] Cl-4中心点(C4H5N3O2)(2)中心点14.35H(2)O(4)。可以将2和4中的六核单元视为三个磁独立的双核络合物,J = -366(3)cm(-1),g = 2.08(1)表示2,J = -360(3)cm(-1) ),g = 2.07(1)for 4。

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