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本文研究了1,2-双烷基(芳基)硫代乙烷(L)——1,2-双(正辛基硫代)乙烷(BOTE)、1,2-双(正戊基硫代)乙烷(BATE)、1,2-双(苯基硫代)乙烷(BPTE)对金的萃取及其配合物的性质.双烷基硫代乙烷对金具有很强的萃取能力,可定量地萃取金.在溶液中,当[L]≥[Au~(3+)]时,Au与L形成1∶1Au-L配合物,而在[L]<[Au~(3+)]时,则为2∶1Au-L配合物.固态时,Au(Ⅲ)、Au(Ⅰ)与L只形成2∶1配合物(AuCl_3)_2L和AaCl)_2L.讨论了BOTE和BATE与Au(Ⅲ)、Au(Ⅰ)配合物的IR和~1H NMR谱.IR谱证实了关于Au(Ⅰ)配合物为线型结构的推断,并借助金原子的交换机理,解释了配合物与配位体的~1H NMR谱外观相似的原因.详细分析了Au(Ⅲ)配合物低频区的IR数据,提出了配合物有离子型结构的新证据.
The effects of 1,2-bis (alkyl) thioethane (L) -1,2-bis (n-octylthio) ethane (BOTE), 1,2-bis Thio) ethane (BATE), 1,2-bis (phenylthio) ethane (BPTE) and the properties of its complexs.The dialkylthioethane has a strong extraction of gold Ability to extract gold quantitatively. In solution, Au forms a 1: 1 Au-L complex with L when [L] ≥ [Au ~ (3+)], (AuCl_3) _2L and AaCl) _2L were formed in Au (Ⅲ), Au (Ⅰ) and L only in the solid state. The effects of BOTE and BATE The IR and ~ 1H NMR spectra of the complex with Au (Ⅲ) and Au (Ⅰ) confirmed the linear structure of the Au (Ⅰ) complex and the gold atom exchange mechanism explained that the complex The reason for the similar appearance to the ~ 1H NMR spectrum of the ligand The IR data of the low frequency region of Au (Ⅲ) complex were analyzed in detail, and new evidence of the ionic structure of the complex was proposed.