Diastereoisomeric four-coordinate complexes. III. Paramagnetic nickel(II) complexes with three asymmetric centers

Self-assembly of a pseudo-tetrahedral Zn(II) complex with a chiral reduced Schiff base into a helical superstructure

“…Pseudo-tetrahedral complexes with bidentate unsymmetrical ligands are C 2 -symmetric. Such molecules are inherently helical and enantiomeric with respect to the right-handed (D or P) or left-handed (K or M) disposition of the two chelate rings along the C 2 -axis passing through the metal ion [12]. Chiral C 2 -symmetric molecules are also known to form helical assemblies through intermolecular non-covalent interactions extending the chirality over the entire molecular superstructure [13][14][15].…”

Ligand Self-Recognition in the Self-Assembly of a [{Cu(L)}2]2+ Complex: The Role of Chirality

“…A clear relationship between ligand and metal chirality is found in these homochiral structures: the (R) and (S) configurations of the ligand stereocenters solely associate with the L and D metal configurations, respectively, which demonstrates the stereospecificity of the reaction. [32,33] The coordination geometry of each metal is best described as distorted trigonal monopyramidal rather than tetrahedral ( Figure 2). The coordinated atoms in the trigonal plane (equatorial ligand atoms) consist of one pyridine (N4; N5) and two imine nitrogen atoms (N3, N7; N2, N6), while a pyridine nitrogen atom (N1; N8) occupies the axial position.…”

Synthesis, structure and olefin polymerization catalysis of nickel(II) complexes bearing N,O-chelate ligands

“…In most solvents, these compounds are completely tautomerized to the ketamine form [21]. As a result, through removing the acid proton with a strong base, like KOC(CH 3 ) 3 , metal complexes bearing -ketoamino ligands, including bis(-ketoamino)nickel(II) complexes, bis(-ketoamino)cobalt(II) complexes, have been prepared and studied [22][23][24][25][26]. Recently, bis(-ketoamino)nickel(II) complexes have sparked new interest in developing late-metal catalysts for olefin polymerization.…”