Stabilizing the RSn(μ_2-O)SnR motif through intramolecular N→Sn coordination. synthesis and characterization

Chandrasekhar V.; Metre R.K.; Biswas S.

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Stabilizing the RSn(μ_2-O)SnR motif through intramolecular N→Sn coordination. synthesis and characterization

机译：通过分子内N→Sn配位稳定RSn（μ_2-O）SnR基序。合成和表征

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The reactions of RSnCl_3 (1; R = 2-(phenylazo)phenyl) with FcCOOH or di-tert-butyl phosphate in refluxing THF afforded the monoorganodistannoxanes (RSn)_2(μ_2-O)(μ_2- FcCOO)_2(η-FcCOO)_2·THF (2) and {(RSn)_2(μ_2-O)(t-BuO)_2PO_2_2Cl_2}·THF·2H_2O (3). The molecular structure of 2 contains seven-coordinate tin centers in a distorted-pentagonal- bipyramidal geometry, while 3 contains six-coordinate tin centers in a distorted-octahedral geometry. In the dinuclear compounds 2 and 3 the two tin centers are bridged by a μ_2-O unit, affording a rare Sn-O-Sn motif among monoorganostannoxanes. In addition, each tin is also intramolecularly coordinated to the nitrogen atom of the 2-phenylazophenyl substituent (N→Sn). Further, in 2, the two tin centers are bridged by two isobidentate ferrocenecarboxylate ligands; each tin center also is bound to a chelating ferrocenecarboxylate ligand. On the other hand, in 3, while the two tin centers are bridged by two isobidentate di-tert-butyl phosphate ligands, each tin center also has a terminal chloride ligand.

机译：RSnCl_3的反应（1;R = 2-（苯偶氮）苯基）与FcCOOH或磷酸二叔丁酯在回流THF中得到单有机二烟烷[（RSn）_2（μ_2-O）（μ_2-FcCOO）_2（η-FcCOO）_2]·THF （2）和 {（RSn）_2（μ_2-O）[（t-BuO）_2PO_2]_2Cl_2}·THF·2H_2O （3）.2 的分子结构在扭曲的五边形双锥体几何中包含七配位锡中心，而 3 在扭曲的八面体几何中包含六配位锡中心。在双核化合物 2 和 3 中，两个锡中心由 μ_2-O 单元桥接，在单有机单烷中提供了罕见的 Sn-O-Sn 基序。此外，每个锡还与2-苯基偶氮苯取代基（N→Sn）的氮原子进行分子内配位。此外，在图2中，两个锡中心由两个异二烯酸二茂铁羧酸配体桥接;每个锡中心也与螯合二茂铁羧酸配体结合。另一方面，在3中，虽然两个锡中心由两个异二烯酸二叔丁基磷酸配体桥接，但每个锡中心也有一个末端氯化物配体。

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《Organometallics》 |2013年第11期|3419-3422|共4页
作者
Chandrasekhar V.; Metre R.K.; Biswas S.;
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Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India;

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正文语种英语
中图分类元素有机化合物;
关键词
coordination; synthesis; characterization;

机译：协调;合成;表征;

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Stabilizing the RSn(μ_2-O)SnR motif through intramolecular N→Sn coordination. synthesis and characterization

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