Figure 2.

Periodic table visualizing the elements of which the dipyrrinato complexes are discussed in this work for their potential as PS’s for PDT (colored). Octahedral homoleptic tris(dipyrrinato) complexes discussed here, are formed mainly by Al(III) d⁰, Ga(III) d¹⁰, In(III) d¹⁰, Fe(III) d⁵, Co(III) d⁶ and Rh(III) d⁶. Tetrahedral or square planar bis(dipyrrinato) complexes are formed mainly by Co(II) d⁷, Ni(II) d⁸, Cu(II) d⁹, Zn(II) d¹⁰ and Pd(II) d⁸. Heteroleptic mono(dipyrrinato) complexes are formed mainly (but not exclusively) with B, Al(III) d⁰, Ga(III) d¹⁰, Ru(II) d⁶, Rh(III) d⁶, Pd(II) d⁸, Re(I) d⁶, Ir(III) d⁶ and Pt(II) d⁸. Note that the d orbital occupancy is given for every ion in this caption (see also Appendix A).