Thus, CH2=CHCH2OH "has an allylic hydroxyl group." Allylic C-H bonds are about 15% weaker than the C-H bonds in ordinary Commercial Orbital Transportation Services | Russian Orbital Segment | Sub-orbital spaceflight | Orbital station-keeping | orbital resonance | Orbital hybridisation | Orbital eccentricity | molecular orbital | Atomic orbital | Timeline of first orbital launches by country | Orbital Test Satellite | orbital station | Orbital state vectors | orbital spaceflight | Orbital overlap | orbital eccentricity | Orbital 2 | Norfolk Orbital Railway | broken remains of Earth's orbital infrastructure | Similar
The band gap opens up at low temperatures due to hybridization of localized electrons (mostly f-electrons) with conduction electrons, a correlation effect known as Kondo effect.