ChemInform Abstract: The Lengths of the Metal-to-Metal Quintuple Bonds and Reactivity Thereof

Autor: N. V. Satyachand Harisomayajula, Anokh K. Nair, Yi-Chou Tsai
Rok vydání: 2014
Předmět:
Zdroj: ChemInform. 46
ISSN: 0931-7597
DOI: 10.1002/chin.201503233
Popis: This article reviews factors affecting the metal–metal bond lengths in the quintuple bonded complexes and reactivity thereof. The metal–metal bond length is the most intriguing metric in the multiple bonded dinuclear complexes. This is not only the case in the well-developed triple and quadruple bonding, but also in the newly-born quintuple bonding. Akin to the wide range of Cr Cr quadruple bond lengths found among the quadruple bonded complexes, the quintuple bonded dichromium complexes also show a large variation in the Cr Cr bond lengths, although only fifteen dichromium compounds have been characterized thus far. Donor atoms and steric pressure of the supporting ligands are two main factors affecting the Cr Cr quintuple bond lengths. The highly reducing nature and low coordination of the quintuple bonded bimetallic complexes render them reactive towards many small inorganic molecules and organic functionalities, and many interesting reactions, such as addition, complexation, cycloaddition and reductive cleavage, were discovered from them.
Databáze: OpenAIRE