Copper complexes of binucleating N,N′-hydroxy-alkyldiaminebis(salicylidine) ligands containing a CuOCu bridge and an exogenous bridge

Syntheses, Characterization, and X-Ray Crystal Structure of a Co-Crystal Containing One Neutral Mononuclear Copper (II) Unit and One Cationic Dinuclear Copper (II) Unit Assembled with Schiff Base and Perchlorate Copper(II) Salt

“…Schiff base ligands with multiple coordination sites are the best choices for building multinuclear metal complexes. Bridged mononuclear and dinuclear copper(II) complexes have attracted much interest from chemists due to their original structures and their physical properties [1][2][3][4][5][6][7]. Much works have been published in recent years to investigate the relationship between structure and physical properties in dinuclear complexes in which the metal centers are bridged by phenoxo oxygen atoms [8][9][10].…”

Mixed-Valent Trinuclear CoIII-CoII-CoIII Complex with 1,3-Bis(5-chlorosalicylideneamino)-2-propanol

“…In the crystals, the Schiff bases take a "bent" [11][12][13][14][15]34] or "folded" [16] structure with the salicylideneaminomethyl moieties being close to planar. When the Schiff-base ligands are coordinated to two metal atoms with two phenolic-oxygen, two imino-nitrogen, and one bridging alkoxido-oxygen donor atom with a pair of tridentate O, N, O-chelates, Mn III 2 , Fe III 2 , Co III 2 , Ni II 2 , and Cu II 2 complexes were reported as this type of dinuclear species [17][18][19][20][21][22][23][24][25][26][27][28][29]. On the other hand, these Schiff-base ligands form mononuclear metal species with a tetradentate O, N, N, O-chelate as shown in the case for 1,3-bis(5chlorosalicylideneamino)-2-propanol in Figure 1b, where the central alcohol group remains protonated and does not participate in coordination to the metal center.…”