Synthesis and characterisation of two Cu(I) metalloligands based on tetradentate tripodal ligands. (29th March 2017)

• Record Type: Journal Article
• Authors: Li, Li; Craze, Alexander R.; Fanna, Daniel J.; Brock, Aidan J.; Clegg, Jack K.; Lindoy, Leonard F.; Aldrich-Wright, Janice R.; Reynolds, Jason K.; Li, Feng
• Is Part Of: Polyhedron. Volume 125(2017)
• Page Start: 44
• Page End: 49
• Publication Date: 2017-03-29
• Subjects: Copper(I) -- Metalloligand -- Schiff base -- Tripodal -- X-ray diffraction; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2016.08.049
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Two new tetradentate tripodal ligands (L 1 andL 2 ) have been successfully prepared through Schiff base condensation of tris(2-aminoethyl)amine (tren) with 4-(4-formylphenyl)pyridine or 4-(3-pyridinyl)benzaldehyde in ethanol, respectively. Four Cu(I) complexes, [CuL 1 ]PF6, [CuL 1 ]I, [CuL 2 ]PF6 and [CuL 2 ]I (1 –4 ), have been prepared and characterised by NMR, HR-MS, SEM-EDS, FT-IR, Raman and UV–Vis. X-ray structures for1 and4 are presented. Abstract: Two new tetradentate tripodal ligands (L 1 andL 2 ) have been synthesized via Schiff base condensation of tris(2-aminoethyl)amine (tren) with 4-(4-pyridinyl)benzaldehyde or 4-(3-pyridinyl)benzaldehyde in ethanol. Four Cu(I) complexes [CuL 1 ]PF6, [CuL 1 ]I, [CuL 2 ]PF6 and [CuL 2 ]I (1 –4 ) have been prepared and characterised by NMR, HR-MS, SEM-EDS, FT-IR, Raman and UV–Vis measurements. X-ray structures for1 and4 are presented. In both structures, the four-coordinate copper(I) centres are bound within the cavity defined by the tren backbone. In such Cu(I) complexes, steric considerations dictate that the three uncoordinated pyridine nitrogen donors will have their coordination vectors oriented in a mutually divergent manner suitable for coordination to three different metal centres and thus are preorganized to act as new tripodal metalloligands.