Halogen Bonding: An Odd Chemistry?

Halogen bonding is a flourishing field of research, but has for long been little recognized. The same goes its scientific hero, Odd Hassel, who laid the foundations all current developments. crystallographic observation halogen−oxygen interatomic distances shorter than sum van der Waals radii involved atoms, and interpretation this phenomenon as charge-transfer interaction, have ground-breaking. Today, to polarized halogen not any longer seen “odd”, commonly referred bonding, widely exploited in chemistry. Despite recognition Hassel's work with Nobel prize 1969, surprisingly appreciation given date devoted scientist, established world-leading laboratory during one darkest eras history. Herein, we wish revive legacy highlight impact ground-breaking discoveries.