Oxo carboxylate tin ladder clusters. A new structural class of organotin compounds
作者:Robert R. Holmes、Charles G. Schmid、V. Chandrasekhar、Roberta O. Day、Joan M. Holmes
DOI:10.1021/ja00239a022
日期:1987.3
the dimeric n-butyloxotin carboxylate compositions, [(n-BuSn(O)O2CR)2-n-BuSn(O2CR)3]2, 2 (R = Ph) and 3 (R = Me). These represent new substances and, as found by X-ray analysis, form a new structural class of organotin compounds for 2-4 having “unfolded drum” or “ladder” structures. The hexamer composition 1 exists in “drum” form. 119Sn NMR data show that the drum and ladder structures interconvert reversibly
摘要 制备了六聚正丁氧锡苯甲酸酯 [n-BuSn(O)O2CC6H4NO2.2]6.3C6H6, 1 和二聚甲基氧锡环己酸酯 [(MeSn(O)O2CC6H11)2MeSn(O2CC6H11)3]2, 4,通过将锡酸与相应的羧酸缩合。正丁基锡的反应。三氯化物与相应羧酸的银盐得到二聚正丁基氧代锡羧酸盐组合物,[(n-BuSn(O)O2CR)2-n-BuSn(O2CR)3]2, 2 (R = Ph) 和 3 ( R = 我)。这些代表新物质,并且如通过 X 射线分析发现的那样,形成具有“展开的鼓”或“梯形”结构的 2-4 的新结构类别的有机锡化合物。六聚体组合物1以“鼓”形式存在。119Sn NMR数据表明鼓和梯形结构可逆地相互转换。1 在菱形/空间群 R3 中结晶,H = 15.283 (4) A, cH, = 34.683 (9) A,