The enantiopure and diastereopure salts Λor Δ-[Co((S,S)-dpen) 3 ] 3+ 2Cl − BAr f − (Λ-or Δ-(S,S)-1 3+ 2Cl − BAr f − ; dpen/BAr f = 1,2-diphenylethylenediamine/B(3,5-C 6 H 3 (CF 3 ) 2 ) 4 ) and Λ-(S,S)-1 3+ 3Cl − are treated with salts of the enantiopure chiral monoanions (A − ) or dianions (A 2− ) 3-bromocamphor-8sulfonate (camphSO 3 − ), 1,1′-binaphthyl-2,2′-diyl phosphate (and three 3,3′-disubstituted derivatives), a related biphenanthryl species, tartrate, and Sb 2 (tart′− , and Λ-(S,S)-1 3+ 3A − are isolated as hydrates and characterized by NMR and microanalyses. In the presence of tertiary amines, many of these are highly enantioselective catalysts for additions of 1,3-dicarbonyl compounds to trans-β-nitrostyrene and di-tert-butylazodicarboxylate. The ee values for diastereomeric salts can exhibit significant differences (avg/high/median Δ %ee = 10/63/6; matched/mismatched effect), and in a few cases, they are better than those obtained with Λor Δ-(S,S)-1 3+ 2Cl − BAr f − . The crystal structure of Δ-(S,S)-1 3+ 2(1S)-camphSO 3 − BAr f − shows that the two sulfonate moieties hydrogen-bond to opposite (idealized) C 3 -symmetric faces of the trication, with a separate oxygen atom associated with each of the three synperiplanar NH groups.