The competition of C-X⋯O=P halogen bond and π-hole⋯O=P bond between halopentafluorobenzenes C₆F₅X (X=F, Cl, Br, I) and triethylphosphine oxide.

The competition of C-X⋯O=P halogen bond and π-hole⋯O=P bond between halopentafluorobenzenes C₆F₅X (X=F, Cl, Br, I) and triethylphosphine oxide.