Reaction of Silyl Hydrides with Tetrabutoxygermanium in the Presence of B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>: Difference between Silicon and Germanium Chemistries and Easy Route to GeH<sub>4</sub>
Dehydrocarbonative condensation reaction between alkoxysilanes and hydrosilanes catalyzed by tris(pentafluorophenyl)borane has been widely used for the formation of siloxane bonds. Our attempt to extend this chemistry to the preparation of Ge–O–Si bonds produced an unexpected outcome. The reaction of Ge(OBu)4 with PhMe2SiH in the presence of a catalytic amount of B(C6F5)3 at room temperature proceeded
三(五氟苯基)硼烷催化的烷氧基硅烷与氢硅烷之间的脱烃缩合反应已广泛用于硅氧烷键的形成。我们将这种化学方法扩展到制备Ge–O–Si键的尝试产生了意想不到的结果。在室温下催化量的B(C 6 F 5)3存在下,Ge(OBu)4与PhMe 2 SiH的反应顺利进行,反应物完全消耗,形成GeH 4和PhMe 2SiOBu高产。我们首次实现了Ge-OR和Si-H之间官能团的选择性交换。发现的反应具有简单的反应条件,可用于从容易获得的安全底物原位制备GeH 4。
Preparation, X-ray Characterization, and Reactivity of the Rod-like and Angular Germanium- and Titanium(IV)-Capped Iron(II) Bis-Clathrochelates and Their Mono- and Bis-Capped (Semi)clathrochelate Precursors
作者:Alexander S. Chuprin、Svetlana A. Belova、Anna V. Vologzhanina、Pavel V. Dorovatovskii、Yan Z. Voloshin
DOI:10.1021/acs.inorgchem.3c04319
日期:2024.3.4
(macrobicyclization) with germanium- and titanium(IV)-based capping agents. The reactions in the low-temperature range unexpectedly gave the stable 2:1 associates, formed by the bridging of two carboxyl-terminated macrobicyclic molecules of the mixed carboxylboron, triethylantimony-capped iron(II) clathrochelate with a triethylantimony(V)-based linker fragment. The obtained complexes were characterized using elemental
双三乙基锑(V)}封端的三-α-二肟酸铁(II)与正丁基硼酸的金属转移反应提供了混合锑、硼交联的笼形螯合物与单一反应性基于锑(V)的顶端片段。这种大双环前体很容易与锗和钛(IV)醇盐发生金属转移反应,得到棒状和有角的Fe II 2 M IV -三核双笼形螯合物。上述二锑(V)封端的络合物与3-和4-羧基苯基硼酸的那些提供了单硼封端的铁(II)半笼形螯合物,与基于锗和钛(IV)的封端剂进行双环化(大环化) 。低温范围内的反应出乎意料地产生了稳定的2:1缔合物,该缔合物是由混合羧基硼、三乙基锑封端的铁(II)笼形螯合物的两个羧基封端的大双环分子与基于三乙基锑(V)的连接体桥接形成的分段。使用元素分析、MALDI-TOF、 1 H 和13 C 1 H} NMR、紫外可见光谱以及单晶 XRD 实验对所得配合物进行了表征。其 3D 分子中封装的铁 (II) 离子几乎位于其具有截断三角锥几何形状的
Effect of temperature on B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-catalysed reduction of germanium alkoxides by hydrosilanes – a new route to germanium nanoparticles
The reaction of Ge(OBu)4 with PhMe2SiH in the presence of B(C6F5)3 carried out at temperatures above 100 °C provides a simple one-pot method for Ge NPs synthesis under mild conditions.