Effect of a methyl group on the spontaneous resolution of a square-pyramidal coordination compound: crystal packing and conglomerate formation

Strong Intermolecular Exciton Couplings in Solid‐State Circular Dichroism of Aryl Benzyl Sulfoxides

“…[21][22][23] Moreover, chiral crystallization and other chirogenic phenomena occurring exclusively in the crystalline state, which are thought to be ultimately related to the symmetry breaking observed in nature, rely on the measurement of CD and other chiroptical spectroscopies such as circular polarization of luminescence (CPL). 24 These phenomena include spontaneous resolution of optically labile species, [25][26][27][28][29][30] precipitation of conglomerates, [31][32][33][34][35] and formation of co-crystals between a chiral species and an achiral or optically labile one. [36][37][38] Our initial interest in solid-state CD spectroscopy was of a quite pragmatic nature.…”

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

“…From a structural point of view, it is noticed that in 1-5, the methyl group attached to the asymmetric carbon atom (C6) and the anions are trans to each other, i.e., the two anions are oriented away from the Cu 2 O 2 unit and the two methyl groups attached to the asymmetric carbon atoms are orientated towards the Cu 2 O 2 unit. Thus, such an arrangement of anions and the methyl group minimizes any steric congestion 13 between the two monomers and forms a centre of symmetry in between them to form the heterochiral dimer in selfdiscriminating manner. Also the roles of the anions and non-covalent interactions on the solid state diastereoselective self-assembly are elaborately discussed.…”

“…12 Of late the coordination stereo-chemistries of chiral and achiral tridentate ligands around the metal centre have been reported by Ghosh and his co-workers. 13 The key aim of the present article is to explore the diastereoselective nature of noncovalent interactions in coordination complexes containing racemic ligands.…”

Absolute asymmetric synthesis of five-coordinate complexes

“…15 This complex was trigonalbipyramidal and chirality in a SPY-5 (the other common coordination geometry for coordination number five) complex was observed by Biswas et al in 2012. 22 They were able to obtain solid-state CD-spectra from individual single crystals of a copper(II) coordination polymer. In 2015, we reported the optical resolution of a palladium complex being intermediate between four-and five-coordination.…”