Quadruple bond electrons (σπδδ*) has an Os–Os triple bond and a staggered geometry. Many other compounds with quadruple bonds between transition metal atoms have been described, often by Cotton and his coworkers. Isoelectronic with the dirhenium compound is the salt K[MoCl] (potassium octachlorodimolybdate). An example of a ditungsten compound with a quadruple bond is ditungsten tetra(hpp). Quadruple bonds between atoms of main group elements are unknown. Molecular orbital theory shows that there are two sets of paired electrons in the sigma system (one bonding, one antibonding), and two sets of paired electrons in a degenerate π-bonding set of orbitals. This adds up
MTV Video Music Award for Quadruple Threat of the Year old format in 2008, though, this category did not come back. MTV Video Music Award for Quadruple Threat of the Year The MTV Video Music Award for Quadruple Threat of the Year was introduced in 2007, as the VMAs were revamped that year and a few new categories were introduced to the show. This award was peculiar for the MTV Video Music Awards, though, for (like Best Artist Website in 1999) it did not reward music nor music videos. Instead, the category awarded musical artists who excelled in at least three other areas beside their music career, such as acting,