An Unambiguous Electron-Counting Notation for Metallaboratranes

To preempt the emergence of conflicting assignments of dn configurations for metallaboratranes, it is recommended that line formulas include a superscript denoting the total number of electrons associated with the metal d orbitals and the M→B bond: viz., [Os(CO)(PPh3){B(mt)3](Os→B)8, [IrH(CO)(PPh3){HB(mt)2}](Ir→B)8, [RhCl(DMAP){BPh(C6H4PiPr2)2}](Rh→B)8, [PtI2{B(mt)3}](Pt→B)8, and [Pt(PPh3){B(mt)3}](Pt→B)10 (mt = methimazolyl, DMAP = (dimethylamino)pyridine).