Wikipedia's Boron trifluoride; Structure and bonding says: In the boron trihalides, BX3, the length of the B–X bonds (1.30 Å) is shorter than would be expected for single bonds,7 and this shortness may indicate stronger B–X π-bonding in the fluoride. A facile explanation invokes the symmetry-all...

Dilead hexahydride is listed on Wikipedia as a compound composed of two lead atoms, and six hydrogen atoms: H H | | H-Pb-Pb-H | | H H As the wikipedia page for this compound does not exist, and Google scholar, along with Google, show no results on it, it's suggested that this is an a...