Preparation and structure of tin(IV) catecholates by reactions of C,N-chelated tin(IV) compounds with a catechol or lithium catecholate, and various stannylenes with a quinone

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• 作者：Jan Turek ; Hana Kampov¨¢ ; Zde¨¾ka Pad¨§lkov¨¢ ; Ale? R??i?ka
• 关键词：Organotin(IV) compounds ; C ; N-ligand ; Catecholate ; NMR ; XRD
• 刊名：Journal of Organometallic Chemistry
• 出版年：2013
• 出版时间：15 November, 2013
• 年：2013
• 卷：745-746
• 期：Complete
• 页码：25-33
• 全文大小：1184 K

文摘

Various tri-, di- and monoorganotin(IV) catecholates were prepared independently by three different reaction pathways, e.g. elimination of a small molecule (lithium halide) from the conversion of organotin(IV) halide with lithium catecholate, condensation or protonolytic reactions of organotin(IV) oxide or hydride with catechol and reduction of a quinone by distannane, organotin(IV) hydride or stannylene. C,N-chelating 2-[(CH₃)₂NCH₂]C₆H₄-?=?L^CN, bulky amido ([2,6-(ⁱPr)C₆H₃](SiMe₃)N-?=?L^N and amido-amino chelating ({2-[(CH₃)₂NCH₂]C₆H₄}(SiMe₃ or GePh₃)N-?=?L^NN1 or L^NN2 ligands were used in this study. All tin(IV) catecholates reveal dimeric structures with six-coordinated tin atoms except for (L^CN)₂Sn{(3,5-(t-Bu)₂C₆H₂]-1,2-(O)₂)} which is monomeric due to the presence of two C,N-chelating ligands. All compounds, including two hydrolysis products, were characterized by a multinuclear NMR approach and X-ray diffraction techniques.