High Bond Orders in Metal-Metal Bonding

摘要

What is a chemical bond, and how many bonds can be made between any two atoms? Each generation of chemists readdresses and refines such questions in the framework of its best current experimental and theoretical methods. Recent synthetic and computational advances in metal-metal bonding seem to extend the concept of bond order to surprising new levels. Such expansion of chemical valency is fueling a reconsideration of fundamental bonding principles articulated by G. N. Lewis more than 90 years ago.