Wiley, Angewandte Chemie International Edition, 9(46), p. 1469-1472, 2007
Wiley, Angewandte Chemie, 9(119), p. 1491-1494, 2007
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(Graph Presented) Maxing out at six: The maximum bond order that can be achieved between two equal atoms in the periodic system is six. The picture shows the potential energy curves for the diatoms Cr2, Mo 2, and W2, where the latter two are sextuply bonded molecules (d = internuclear distance in atomic units).