The cover picture shows the two different hexanuclear FeIII phosphinate clusters that have been synthesized by employing a multicomponent reaction involving FeIII salts, 1,1,2,3,3-pentamethyltrimethylenephosphinic acid [cycPO2H] or dicyclohexylphosphinic acid [(C6H11)2PO2H}] along with pivalic acid in the presence of triethylamine. The molecular structure reveals that the dimeric complex is made up of two butterfly-shaped {FeIII3–O} subunits that are bridged to each other by two phosphinate ligands. The magnetic properties of these complexes indicate medium to strong antiferromagnetic interactions between the FeIII ions inside the {FeIII3–O} subunits and weak inter-trinuclear antiferromagnetic interactions that are mediated through the bridging phosphinate ligands. The triangular topology of the {FeIII3–O} subunits gives rise to competing antiferromagnetic interactions and spin frustration. The different relative magnitude of the competing interactions leads to a rare S = 5/2 ground spin state for the {FeIII3–O} subunit in 1 and to S = 1/2 ground spin state for that in 2. The butterfly pictures in the background hint to the core structure. Details are discussed in the article by E. Colacio, V. Chandrasekhar et al. on p. 5601 ff. For more on the story behind the cover research, see the Cover Profile.