Importance of C–H⋯π interactions in stabilizing the syn/anti arrangement of pendant alkoxy side arms in two manganese(iv) Schiff base complexes: exploration of catechol oxidase and phenoxazinone synthase like activities

Abstract

Two manganese(iv) complexes have been prepared and characterized. Both complexes exhibit catechol oxidase and phenoxazinone synthase like activities.

Synthesis, spectroscopic findings and crystal engineering of Pb(ii)–Salen coordination polymers, and supramolecular architectures engineered by σ-hole/spodium/tetrel bonds: a combined experimental and theoretical investigation

“…The distribution of bond critical points and NCI plot index iso-surfaces shows the existence of several interactions, mostly CH/p (pseudohalide). This type of contact has been described before in X-ray structures 85. Remarkably, the QTAIM analysis conrms the existence of two tetrel bonds (Pb/O, N), characterized by the corresponding bond critical points and bond paths interconnecting the Pb atom to the O, N-atoms.…”

“…This type of contact has been described before in X-ray structures. 85 Remarkably, the QTAIM analysis confirms the existence of two tetrel bonds (Pb⋯O, N), characterized by the corresponding bond critical points and bond paths interconnecting the Pb atom to the O, N-atoms. The blue and green colors of the NCI plot iso-surfaces that characterize the Pb⋯O and Pb⋯N interactions, respectively, reveal that the Pb⋯O is stronger, in line with the shorter distance.…”

One pot synthesis of two cobalt(iii) Schiff base complexes with chelating pyridyltetrazolate and exploration of their bio-relevant catalytic activities

“… 8 Many transition metal complexes of Schiff bases have been showing to have the ability to mimic these two enzyme. 9 Focusing to cobalt( iii ) Schiff base complexes, extensive attention into their metallo-organic and coordination chemistry arises from their synthetic accessibility, fascinating structural features and diverse range of applications in photochemistry, 10 electrochromism, 11 and catalysis. 12 They also have significant biological applications.…”