Five‐Membered Cyclic Metal Carbyne: Synthesis of Osmapentalynes by the Reactions of Osmapentalene with Allene, Alkyne, and Alkene1. Issue 24 (27th April 2015)

• Record Type: Journal Article
• Authors: Zhu, Congqing; Yang, Yuhui; Wu, Jingjing; Luo, Ming; Fan, Jinglan; Zhu, Jun; Xia, Haiping
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 24(2015)
• Page Start: 7189
• Page End: 7192
• Publication Date: 2015-04-27
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201502412
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The synthesis of small cyclic metal carbynes is challenging due to the large angle strain associated with the highly distorted nonlinear triple bonds. Herein, we report a general route for the synthesis of five‐membered cyclic metal carbyne complexes, osmapentalynes, by the reactions of an osmapentalene derivative with allene, alkyne, and alkene. Experimental observations and theoretical calculations document the aromaticity in the fused five‐membered rings of osmapentalynes. The realization of transforming osmapentalene to osmapentalyne through this general route would not only allow further exploration of metallapentalyne chemistry but also show promising applications of this novel aromatic system with broad absorption band and high molar absorption coefficient.</p> </abstract>