Benzyl Dihydrazone versus Thiosemicarbazone Schiff Base: Effects on the Supramolecular Arrangement of Cobalt Thiocyanate Complexes and the Generation of CoN₆ and CoN₄S₂ Coordination Spheres

Abstract

In this study, we examine the coordination chemistry of benzyl dihydrazone and thiosemicarbazone Schiff bases featuring different chelation modes, steric bulk, and reactivities towards cobalt(II) thiocyanate. The tetradentate benzyl dihydrazone ligands coordinate to the Co(SCN) 2 fragment to form CoN 6 coordination spheres (1-3), whereas the thiosemicarbazone ligands provide Co III complexes featuring CoN 4 S 2 coordination spheres (4 and 5) and charge-balancing anions {SCNand [Co(SCN) 4 ] 2for 4 and 5, respectively}. Hirshfeld surface (HS) IntroductionThe arrangements and interactions between molecules (both organic and hybrid metal-organic) in the solid state constitute the basis of crystal engineering and materials science. For crystal engineering, it is essential to identify, understand, and possibly quantify participating interactions, and the ultimate goal is the prediction of crystal structures. [1] In materials science, the [a]

Structural versatility of the quasi-aromatic Möbius type zinc(ii)-pseudohalide complexes – experimental and theoretical investigations

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Recurrent supramolecular motifs in discrete complexes and coordination polymers based on mercury halides: prevalence of chelate ring stacking and substituent effects

“…In our previous papers, we have noted that this behaviour is characteristic of crystal structures, which comprise more than one molecular component, e.g. in structures featured by two crystallographically independent molecules 40 or in solvates. 41 Indeed, this is the case for compound 4, in which a methanol molecule is present.…”

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