6533b870fe1ef96bd12cf267

RESEARCH PRODUCT

Observation of novel oxygen⋯oxygen interaction in supramolecular assembly of cobalt(III) Schiff base complexes: a combined experimental and computational study

Antonio FronteraAntonio BauzáShouvik ChattopadhyayBiswa Nath GhoshMithun DasKari Rissanen

subject

Schiff basekemianovel oxygenStereochemistryHydrogen bondGeneral Chemical EngineeringAcetylacetoneSupramolecular chemistrychemistry.chemical_elementGeneral ChemistrychemistrycobaltSupramolecular assemblychemistry.chemical_compoundCrystallographychemistryAzidekobolttiCobaltta116Natural bond orbital

description

Two mononuclear cobalt(III) Schiff base complexes with azide [Co(L)(N3)(L0 )] (1) and [Co(L)(N3)(L00)] (2) {where HL ¼ 1-((2-(diethylamino)ethylimino)methyl)naphthalene-2-ol, HL0 ¼ 2-hydroxy-1-naphthaldehyde and HL00 ¼ acetylacetone} have been synthesized and characterized by elemental analysis, IR and UV-Vis spectroscopy and single crystal X-ray diffraction studies. Both complexes show mononuclear structures with azide as terminal coligand. Structural features have been examined in detail that reveal the formation of interesting supramolecular networks generated through non-covalent forces including hydrogen bonding, C–H/H–C and C–H/p interactions. These interactions have been studied energetically by means of theoretical DFT calculations. We have also analyzed the unexpected O/O interactions observed in one complex between the oxygen atoms of the coordinated aldehyde groups using several computational tools, including Bader's “atoms-in-molecules” (AIM) and natural bond orbital (NBO) analyses. peerReviewed

10.1039/c5ra13960khttps://doi.org/10.1039/C5RA13960K