Effect of non-covalent interaction on the diastereoselective self-assembly of Cu(ii) complexes containing a racemic Schiff base in a chiral self-discriminating process

Abstract

The effects of π⋯π interactions between benzene–pyridine rings on the diastereoselective self-assembly of Cu(ii) compounds in the chiral self-discrimination process are studied.

Homologous 1,3,5-triarylpyrazolines: synthesis, CH⋯π interactions guided self-assembly and effect of alkyloxy chain length on DNA binding properties

“…Among the weak non-covalent interactions, C-HÁ Á Áp interactions are considered to be the most important, in which a C-H group and a p ring act as hydrogen donor and acceptor, respectively. [1][2][3][4][5] The energy associated with these important types of weak hydrogen bonds are significantly smaller (0.8 kcal mol À1 ) compared to that of typical strong hydrogen-bonds between OÁ Á ÁH or NÁ Á ÁH (7.8 to 3.5 kcal mol À1 ). 6,7 However, these interactions have been found to be strong enough to stabilize a particular conformation of molecules for their higher-order self-assembly.…”

Heterochiral Doped Supramolecular Coordination Networks for High-Performance Optoelectronics

“…Hz Hz (6) where E (Rac)+n•Hz and E (Rac)+(n−1)•Hz represent the total energy of the (Rac)-AlaNDI-Cd surface with "n" and "(n−1)" adsorbed hydrazine molecules, E (Rac) represents the total energy of the bare (Rac)-AlaNDI-Cd surface, and E Hz is the total energy of an isolated hydrazine molecule. 2.12.…”

“…As noncovalent interactions can interlink two coordination complexes with ligands of the same or different chirality, it is of great significance to thoroughly investigate how different factors affect the formation of homo/heterochiral CPs/MOFs by the selfassembly of racemic ligands. 6 One of the most important, yet least explored, properties of CPs/MOFs is their ability to conduct electrical charges for use as active functional materials for next-generation electronic or optoelectronic devices due to their low conductivity. 7 To date, several methods have been reported to improve the electrical conductivity of CPs/MOFs, including the use of conjugated organic linkers, different metal cations, molecular dopants, and mixed valence doping.…”

Heterochiral or Homochiral Self‐Assembly: Mercury(II), Cadmium(II), and Spontaneous Resolution of Silver(I) Complexes Derived from a Racemic Bis(pyridyl) Ligand

“…In principle, chiral ligands are employed to achieve enantio‐ or diastereoselective assembly, but a more complex and less explored situation arises when racemic ligands are used . In such systems, reactions with racemic ligands either result in homochiral complexes through a ligand self‐recognition (also known as narcissistic self‐sorting) process or heterochiral complexes through a ligand self‐discrimination (also called social self‐sorting) process . For example, Rudbari group has reported that the reaction of a racemic mixture of Schiff base tridentate ligand with vanadium(V) affords homochiral vanadium complex in a ligand self‐recognition process, and the Bian group reported that a racemic bisbipyridines ligand discriminates its own chirality and results in a heterochiral metallocycle in a chiral self‐discriminating manner .…”

“…[9][10][11][12][13] In such systems, reactions with racemic ligands either result in homochiral complexes through a ligand self-recognition (also known as narcissistic self-sorting) process [14][15][16] or heterochiral complexes through a ligand self-discrimination (also called social self-sorting) process. [17][18][19][20] For example, Rudbari group has reported that the reaction of a racemic mixture of Schiff base tridentate ligand with vanadium(V) affords homochiral vanadium complex in a ligand self-recognition process, [21] and the Bian group reported that a racemic bisbipyridines ligand discriminates its own chirality and results in a heterochiral metallocycle in a chiral self-discriminating manner. [22] Mastering the self-sorting behavior is of utmost importance to cope with the immense structural complexity that such systems offer.…”