New polydentate Schiff bases and their cobalt complexes
Abstract
The condensation of 2,6-diformyl-4R-phenols (R = Me, But) , 1 with 2,3-diaminomaleodinitrile 2 in the absence of metal ions affords new polydentate acyclic [1+2] Schiff bases 4 and 5, which form binuclear and tetranuclear cobalt complexes.