Stabilization of Three-Coordinated Germanium(II) and Tin(II) Cations by a Neutral Chelating Ligand

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• 作者：Marek Bou拧ka ; Libor Dost谩l ; Ale拧 R暖啪i膷ka ; Roman Jambor
• 刊名：Organometallics
• 出版年：2013
• 出版时间：March 25, 2013
• 年：2013
• 卷：32
• 期：6
• 页码：1995-1999
• 全文大小：274K
• 年卷期：v.32,no.6(March 25, 2013)
• ISSN：1520-6041

文摘

Treatment of the neutral 2-[C(CH₃)鈺怤(C₆H₃-2,6-ⁱPr₂)]-6-(CH₃O)C₆H₃N ligand (hereafter assigned as L) with SnCl₂ and GeCl₂ provided the ionic germanium(II) and tin(II) complexes [LGe^IICl]⁺[Ge^IICl₃]^{鈭?/sup> (1) and [LSnIICl]+[SnIICl₃]鈭?/sup> (2), respectively, as the result of spontaneous dissociation of ECl₂ (E = Ge, Sn). The cationic parts [LEIICl]+ of 1 and 2 contain three-coordinated germanium(II) and tin(II) atoms. In comparison, treatment of the ligand L with GeCl₄ and SnBr₄ yielded the germanium(IV) and tin(IV) complexes LGeCl₄ (3) and LSnBr₄ (4), respectively, and no dissociation process was observed. Compounds 1鈥?b>4 were characterized by means of elemental analyses, 1H, 13C, and 119Sn NMR spectroscopies, and single-crystal X-ray diffraction analysis in (compounds 1 and 4).}