Development of novel and efficient synthesis of group 14 element (Ge and Sn) catenates by use of samarium (II) diiodide
摘要:
Group 14 element catenates such as di-, tri-, poly-germanes, and polystannanes are efficiently synthesized by use of the one-electron reducing agent Sml(2) under mild homogeneous conditions in good yields. (c) 2005 Elsevier B.V. All rights reserved.
Direct Detection of 1,1-Diphenylgermene in Solution and Absolute Rate Constants for Germene Trapping Reactions
作者:Nicholas P. Toltl、William J. Leigh
DOI:10.1021/ja973756f
日期:1998.2.1
Direct irradiation of 1,1-diphenylgermetane in hexane solution affords 1,1,3,3-tetraphenyl-1,3-digermetane in high chemical yield. Photolysis in the presence of aliphatic alcohols leads instead to the formation of the corresponding alkoxymethyldiphenylgermane. These results are consistent with the formation of 1,1-diphenylgermene as a primary photochemical product from photolysis of the germetane.
The photochemical reactions of aryl-substituted digermanes were investigated by trapping experiments and a laser flash photolysis technique. The photolysis of phenylated digermanes resulted in germanium–germanium bond homolysis to give a pair of two germyl radicals. The germyl radicals abstracted a chlorine atom from carbon tetrachloride to give chlorogermanes. The pair of germyl radicals also underwent
Electrochemical Halogenation of Trisubstituted Germanes and Silanes
作者:Mitsutoshi Okano、Kunio Mochida
DOI:10.1246/bcsj.64.1381
日期:1991.4
Electrochemical halogenation of trisubstituted germanes and silanes in acetonitrile occurred in the cathode compartment in contrast to the well-known electrochemical halogenations which always occur in the anode compartment.
The new organogermyllithium Mes3GeLi has been prepared in good yield by hydrogermolysis reaction of t-butyllithium in THF. The bulky group favours stabilization in the form of the THF complex. Mes3GeLi has been characterized by alkylation reaction with MeI. Some metalation reactions are reported. They lead to the formation of unsymmetrical or symmetrical organogermylmercuric compounds and also of new
Laser photolysis and CIDEP studies of the formation of phenyl-substituted Group IVA element (silicon, germanium, and tin)-centered radicals in direct photoejection of the Group IVA element-centered anions
group 4B element-centered radicals generated by the direct photoejection from the group 4B element-centered anions were observed by laserphotolysis at room temperature. In order to clarify the mechanism of this process, CIDEP study of the photolysis of the group 4B element-centered anions was carried out at 77 and 4.2 K. From the emissive patterns observed for the germyl and stannyl anions after the