Two ball-and-stick models are shown. In the left model, three orange atoms labeled, “P,” are single bonded to red atoms labeled, “O,” in an alternating, six-sided ring structure. Each of the orange atoms are also single bonded to another red atom, which are in turn single bonded to a single orange atom. The right model shows three orange atoms labeled, “P,” single bonded to red atoms labeled, “O,” in an alternating, six-sided ring structure. Each of the orange atoms are also single bonded to two more red atoms, one in an upward position and one facing the outside of the molecule. The upward red atoms are single bonded to a single orange atom which is single bonded to a final red atom.