Oxocyano complexes of molybdenum(IV) and tungsten(IV) with Schiff base ligands derived from salicylaldehyde and aliphatic amines. Crystal structure of [PPh4]2[Mo(CN)3O(ensal)]·5.5H 2O (Hensal = N-salicylideneethylenediamine) - Heinemann, Frank Wilhelm; et al. (Journal of the Chemical Society, Dalton Transactions, 1998)