Abstract

The copper(I) complexation reaction with 2,2'-bipyridyl in the presence of salts of the closo-deca-borate anion has been studied in air in organic solvents (1,2-dichloroethane and DMF). It has been found that, as a result of the redox reaction, copper(II) coordination compounds with the [B₁₀H₁₀]^2– anion and 2,2'-bipy-ridyl anion are prepared from known copper(I) complex [\({\text{Cu}}_{2}^{{\text{I}}}\)(Bipy)₂[B₁₀H₁₀]] formed in situ. It has been shown that the reaction conditions (the process temperature and solvent nature) have a significant effect on the reaction path and, accordingly, on the composition and structure of the resulting complexes. Mono- and binuclear Cu(II) complexes [Cu^II(Bipy)₂Cl]₂[B₁₀H₁₀] and {[\({\text{Cu}}_{2}^{{{\text{II}}}}\)(Bipy)₂(μ-OH)₂][B₁₀H₁₀]} have been isolated and chara-cterized. According to X-ray diffraction, the structure of complex {[\({\text{Cu}}_{2}^{{{\text{II}}}}\)(Bipy)₂(μ-OH)₂][B₁₀H₁₀]} contains long Cu…H(B) contacts between the closo-decaborate anion and the metal atom.

中文翻译：

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2,2'-联吡啶和closo-脱阴离子的单核和双核铜（II）配合物的形成特征

摘要

铜（I）络合2,2'-联吡啶在盐的存在下反应闭合碳-癸硼酸根阴离子已被研究了在有机溶剂（1,2-二氯乙烷和DMF）的空气。已经发现，由于氧化还原反应，由已知的铜（I）配合物制备了具有[B ₁₀ H ₁₀ ] ^2-阴离子和2,2'-联^吡啶基阴离子的铜（II）配位化合物。[ \（{\ text {Cu}} _ {2} ^ {{\ text {I}}} \\）（Bipy）₂ [B ₁₀ H ₁₀]]原位形成。已经表明，反应条件（工艺温度和溶剂性质）对反应路径具有显着影响，因此对所得配合物的组成和结构具有显着影响。单核和双核Cu（II）配合物[Cu ^II（Bipy）₂ Cl] ₂ [B ₁₀ H ₁₀ ]和{[ \（{\ text {Cu}} _ {2} ^ {{\ text {II} }}} \）（Bipy）₂（μ-OH）₂ ] [B ₁₀ H ₁₀ ]}已被分离并表征。根据X射线衍射，复数{[ \（{\ text {Cu}} _ {2} ^ {{{\ text {II}}}}} \）的结构（Bipy）₂（μ-OH）₂] [B ₁₀ ħ ₁₀ ]}包含长的Cu ... H（B）的之间的接触闭合碳-decaborate阴离子和金属原子。