Metallacycle Expansion and Annulation:Access to Tetrazolo-Fused Osmacycles by Reaction of Cyclic Osmium Carbyne with Sodium Azide  

作　　者：Hongjian Wang Yu-Mei Lin Siyuan Chen Yonghong Ruan Haiping Xia 

机构地区：[1]State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China [2]Shenzhen Grubbs Institute,Department of Chemistry,Southern University of Science and Technology,Shenzhen,Guangdong 518055,China

出　　处：《Chinese Journal of Chemistry》2021年第12期3435-3442,共8页中国化学（英文版）

基　　金：This research was supported by the National Natural Science Foundation of China(Nos.22071206,U1705254,21931002);the Natural Science Foundation of Fujian Province of China(No.2020J01025).

摘　　要：The reaction of a cyclic osmacarbyne complex with sodium azide led to the formation of a ring expansion-annulation product,a unique tetrazole annulated polycyclic metallacycle.The reaction proceeds by insertion of a nitrogen atom into the metal carbon triple bond and the second azide participating in the[2+3]cycloaddition.The successful isolation and characterization of metalla-azirine complex and metallapyridinium derivative strongly validated the mechanism for the formation of the title complex.The work demonstrates a new strategy to enrich the varieties of aza-metallacyclic species.

关 键 词：METALLACYCLES Osmiurncarbyne Ring expansion ANNULATION Aza-heterocycle 

分 类 号：O61[理学—无机化学]