Synthesis and reactivity of trans-N,N′-dimethyl-meso-octaalkylporphyrinogen Sm(II), Eu(II) and Yb(II) complexes: Metal-based influences on the reduction of t-butyl-1,4-diazabuta-1,3-diene

Sm(II), Eu(II) and Yb(II) complexes of doubly deprotonated trans-N,N′-dimethyl-meso-octaethylporphyrinogen were synthesised as tetrahydrofuran adducts (Sm and Eu, bis; Yb, mono) by metathetical exchange reactions. The Sm and Eu complexes partially desolvate in non-coordinating solvents to give mono-tetrahydrofuran adducts. Reactions with 1,4-di-t-butyl-1,4-diazabuta-1,3-diene have been explored.