Triple bond

Some diatomic molecules, such as diphosphorus[1] and carbon monoxide, are also triple bonded.

In skeletal formulae the triple bond is drawn as three parallel lines (≡) between the two connected atoms.

The two sp-orbitals are linear, with 180° bond angles, and occupy the x-axis in the cartesian coordinate system.

When the atoms approach each other, the sp orbitals overlap to form an sp-sp sigma bond.

[6] Hexa(tert-butoxy)ditungsten(III) has attracted particular attention for its reactions with alkynes, leading to metal-carbon triple bonded compounds of the formula RC≡W(OBut)3[7] Additionally, phosphorus can exist as the highly reactive diatomic molecule diphosphorus, which has roughly half the bond-dissociation energy of dinitrogen.

Structure and AFM image of dehydrobenzo[12]annulene, where benzene rings are held together by triple bonds
Structure of hexa(tert-butoxy)ditungsten(III) , an example of a metal-metal triple bond.