In this work, we report the preparation and crystal structures of three new oligonuclear complexes, Ru2(bbpmp)(μ‐OAc)3 (4), [Co2(bbpmp)(μ‐OAc)(μ‐OMe)](PF6) (5), [Cu4(Hbbpmp)2(μ‐OAc)(H2O)2](OAc)(PF6)2 (6) {H3bbpmp = 2,6‐bis[(2‐hydroxybenzyl)‐(2‐pyridylmethyl)aminomethyl]‐4‐methyl‐phenol (3)}. The structures of the complexes were determined by single‐crystal X‐ray diffraction. The oxidation states of ruthenium, cobalt and copper in the complexes are +3, +3 and +2, respectively. In 4 and 5, RuIII and CoIII are coordinated to four oxygen and two nitrogen atoms in an octahedral geometry, while in 6, CuII adopts both octahedral (CuN2O4) and square‐pyramidal (CuN2O3) geometry. The potential of the three complexes as oxidation catalysts has been investigated.