Theoretical insights into the nature of bonding in group 13–group 15 compounds [RE E′R] (E = B–Tl; E′ = N–Bi; R = Me, Ph, Ar): Bonding energy analysis

Synthesis of a Gallaarsene {HC[C(Me)N-2,6-i-Pr2-C6H3]2}GaAsCp* Containing a Ga═As Double Bond

“…Monomeric group 13/15 compounds of the general type RMER′ containing a double bond between heavier group 13 (M = Al, Ga, In, Tl) and heavier group 15 elements (E = P, As, Sb, Bi) are almost unknown, whereas multiple-bonded boron compounds containing BN, BP, and BAs double bonds, respectively, as well as group 13 metal imides RMNR′ (M = Al, Ga, In) are well established . Their solid state structures were determined and their bonding situation analyzed by quantum chemical calculations . The lack of multiple-bond compounds containing the heavier elements of both groups is a consequence of the rather weak π-bond energy due to the rather poor p-orbital overlap, which has led to the so-called “double bond rule” .…”