Zinc and cadmium halide compounds with the tridentate ligand 2-(methylsulfanyl)-N-(pyridin-2-ylmethylidene)aniline showing yellow luminescence

详细信息    查看全文

• 作者：Xue Liu^a ; Adriana Gonzá ; lez-Castro^a ; Ilpo Mutikainen^b ; Andrej Pevec^c ; Simon J. Teat^d ; Patrick Gamez^a ; ¹ ; Jose Sanchez Costa^a ; ² ; Elisabeth Bouwman^a ; ^{bouwman@chem.leidenuniv.nl" class="auth_mail" title="E-mail the corresponding author} ; Jan Reedijk^a
• 关键词：Zinc(II) ; Cadmium(II) ; Chloride ; Bromide ; Luminescence
• 刊名：Polyhedron
• 出版年：2016
• 出版时间：28 May 2016
• 年：2016
• 卷：110
• 期：Complete
• 页码：100-105
• 全文大小：1333 K

文摘

Five mononuclear complexes, i.e. ZnLCl₂ (1), [ZnLBr₂](CH₃CN) (2), ZnLBr₂ (3), CdLCl₂ (4), and CdLBr₂ (5), with L = 2-(methylsulfanyl)-N-(pyridin-2-ylmethylidene)aniline, have been synthesized and characterized. For [ZnLBr₂](CH₃CN) only a few crystals were obtained from the main batch of ZnLBr₂. Their crystal structures and solid-state luminescence properties both at room temperature and 77 K have been investigated. All compounds contain 5-coordinated Zn(II) or Cd(II) ions in a square-pyramidal geometry, distorted towards trigonal bipyramidal. The phase purity of all compounds has been evaluated by Powder XRD and IR. All five compounds show photoluminescent properties both at room temperature and 77 K. In the solid state, the compounds exhibit yellow luminescence with the maximum of emission at around 540 nm. By cooling down to 77 K, the shape and position of the emission spectra of all these compounds remains more or less constant.