Carbon–bismuth bonds reveal that relativity blurs the textbook line between sigma and pi bonds

Brown University chemists have provided direct evidence that upends the textbook explanation of how triple chemical bonds ...
New Scientist on MSN

Special relativity can warp chemical bonds – now we've seen it happen

An experiment with a charged molecule of bismuth and carbon reveals how effects from Albert Einstein’s special relativity ...
Nature

Valence Bond Theory and Electronic Structure in Chemistry

Valence bond theory offers a description of chemical bonding in which atomic orbitals overlap to form localized electron pairs, blending ionic and covalent contributions to yield resonance energies ...
Phys.org

Core electron bonding may not always require extreme pressure, study finds

You probably learned in high school chemistry class that core electrons don't participate in chemical bonding. They're thought to be too deep inside an atom and close to the nucleus to meaningfully ...