Abstract
A rare homotrinuclear CuII salamo-based complex [Cu3(L)2(μ-OAc)2(H2O)2]·2CHCl3·5H2O was prepared through the reaction of a non-symmetric salamo-based ligand H2L and Cu(OAc)2·H2O, and validated by elemental analyses, UV-Visible absorption, fluorescence and infrared spectra, molecular simulation and single-crystal X-ray analysis techniques. It is shown that three CuII atoms and two wholly deprotonated ligand (L)2− moieties form together a trinuclear 3:2 (M:L) complex with two coordination water molecules and two bi-dentate briging μ-acetate groups (μ-OAc−). Besides, the Hirshfeld surface analysis of the CuII complex was investigated. Compared with other ligands, the fluorescent strength of the CuII complex was evidently lowered, showing that the CuII ions possess fluorescent quenching effect.
Highlights
IntroductionBoth the salen-based ligands and their derivatives have shown strong development potential in the research of materials chemistry, coordination chemistry, and environmental monitoring for decades because of their good application prospects in organic catalytic synthesis, molecular magnetic properties, and luminescent properties [1,2,3,4,5], which, owing to their N2O2-donor structure, usually have excellent coordination ability to transition metal ions for various structural novel complexes (derivatives) [6,7,8,9,10,11]
According to a large amount of preliminary research works [43,44,45,46,47,48,49], here, a non-symmetrical salamo-derived compound H2L was prepared, several single crystals of its CuII complex were obtained by natural evaporation method in chloroform/ethanol mixed solvent at room temperature in about one month, and the structures and properties of H2L and its CuII complex were further characterized by various modern analytical techniques
The spectrum of the CuII complex showed absorption bands at ca. 3425, 1606, and 547 cm−1 which could be assigned to the coordination water molecules, as is substantiated by the results of elemental analyses and the crystal structure [52]
Summary
Both the salen-based ligands and their derivatives have shown strong development potential in the research of materials chemistry, coordination chemistry, and environmental monitoring for decades because of their good application prospects in organic catalytic synthesis, molecular magnetic properties, and luminescent properties [1,2,3,4,5], which, owing to their N2O2-donor structure, usually have excellent coordination ability to transition metal ions for various structural novel complexes (derivatives) [6,7,8,9,10,11]. According to a large amount of preliminary research works [43,44,45,46,47,48,49], here, a non-symmetrical salamo-derived compound H2L was prepared, several single crystals of its CuII complex were obtained by natural evaporation method in chloroform/ethanol mixed solvent at room temperature in about one month, and the structures and properties of H2L and its CuII complex were further characterized by various modern analytical techniques. The brownish green mixture was filtered, and several single crystals were acquired via natural evaporation method. Several brownish green block-like single crystals were obtained.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
