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Hydrolysis and Condensation of Tin(IV) Alkoxide Compounds: The Control ofStructural Evolution

机译：锡（IV）醇盐化合物的水解和缩合：结构演化的控制

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We have studied ester elimination in a number of model systems to determine the criteria which promote or inhibit such reactions. The model systems generally involve metal centers which possess NMR active nuclei such as 29Si, 119, 117Sn and 207Pb. In these systems, we have conducted a number of 170 labeling experiments which reveal that ester elimination is probably an associative process that requires electropositive metal alkoxide centers, accessible coordination sites at the metal centers, dangling carboxylate ligands and which is promoted by noncoordinating solvents and inhibited by coordinating solvents. In a heterobimetallic systems, the reaction between Sn(O-t-Bu)4 and Pb(OAc)4 results in formation of a metal oxo cluster in the presence of toluene. These metal oxo clusters retain their structure in solution as determined by multinuclear NMR, spectroscopy for PbSn2O(O-t-Bu)4(OAc)4. As a result of this understanding gained from these model reactions, we are now in a position to investigate the formation of metal oxide materials using these clusters.

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Hampden-Smith, M. J.;
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年度 1996
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总页数 7
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Molecular structure; Esters; Hydrolysis; Tin compounds; Condensation reactions; Metals; Nuclear magnetic resonance; Models; Spectroscopy; Materials; Oxides; Silicon; Chemical reactions; Ligands; Solvents; Nuclei; Lead(Metal); Toluenes; Alkoxides; Oxo groups;

机译：分子结构;酯类;水解;锡化合物;缩合反应;金属;核磁共振;模型;光谱学;材料;氧化物;硅;化学反应;配体;溶剂;核;铅（金属）; Toluenes;醇盐;氧代基团;

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7. Solid state and solution structural investigation of homoleptic tin(IV) alkoxide compounds. Part I. Sn(O—t-Bu)4 and Sn(O—i-Pr)4•HO—i-Pr2 [O] . Mark J. Hampden-Smith, Teresa A. Wark, Arnold Rheingold, 1991

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8. Hydrolysis and Condensation of Tin(IV) Alkoxide Compounds: The Control ofStructural Evolution [R] . Hampden-Smith, M. J. 1996

机译：锡（IV）醇盐化合物的水解和缩合：结构演化的控制

Hydrolysis and Condensation of Tin(IV) Alkoxide Compounds: The Control ofStructural Evolution

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