Now, two recent experiments found evidence of a bromine-hydrogen-bromine molecule with vibrational bonding, Chemistry World reports. One found the bond by creating exotic versions of hydrogen. The discovering team created isotopes of hydrogen by replacing hydrogen's electrons with exotic particles called muons. Only muonium made vibrational bonds with the bromine atoms.
These new findings were made possible by quantum chemistry techniques, which allowed researchers to calculate the vibrational zero point energy of the system, Chemistry World reports. Such techniques didn't exist back in the 1980s.
source: popsci.com By Francie Diep