A thermally labile copper (II) complex with hetero N- and O-donor ligands: Crystal structure, Hirshfeld surfaces, thermal and luminescent properties

作者：Luo Yang Hui; Wang Yan; Zhao Jing; Wang Yi Hong

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2014, 122: 246-251.

DOI：10.1016/j.saa.2013.11.090

• Hetero ligands
• Hirshfeld surfaces
• Thermal behaviour
• Luminescent properties

A new complex ([Cu(L-1)(2)(H2O](2)]center dot 2H(2)O, 1) derived from a hetero N- and O-donor ligand 5-methyl-imidazole-3-carboxylic acid (L1H) has been synthesized and characterized. Comparisons between [Cu(L-1)(2) (H2O](2)]center dot 2H(2)O, [Co(L-2)(H2O](2)center dot H2O (2), and [Cu(L-2)(2)H2O]center dot H2O (L2H = 5-methyl-isoxazole-3-carboxylic acid) revealed that the coordinated water molecules play a key role in the construction of crystal structures: two coordinated water molecules in the axial positions lead to single-deck 10 chain and 3D motif while one coordinated water molecule resulted to double-deck 10 chain and 20 stacking motif. Molecular Hirshfeld surfaces revealed that complexes 1 and 2 were supported mainly by H-H, C-H center dot center dot center dot pi and O-H center dot center dot center dot O intermolecular interactions. The room temperature solid state luminescent properties of complexes 1 and 2 were all shown as two distinct bands, which attribute to ligand-metal charge transfer and metal purterbed ligand centered emission.

• 出版日期2014-3-25
• 单位东南大学