NDLI: Synthesis, characterization, photophysics, and anion binding properties of platinum(II) acetylide complexes with urea group

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wan, Li-qi Lam, Chi-keung Liu, Jiewei Jiang, Fang-ru Chao, Hsiu-yi Ye, Bao-hui Zhang, Zhi-hui Qiao, Zhengping
Description	Author Affiliation: Zhang ZH ( MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China. zhaoxy@mail.sysu.edu.cn.)
Abstract	A new class of platinum(II) acetylide complexes with urea group, $[Pt(^{t}Bu_{3}tpy)(C\&\#8801;CC_{6}H_{4}-4-NHC(O)NHC_{6}H_{4}-4-R)](OTf)$ $(^{t}Bu_{3}tpy$ = 4,4′,4′′-tri-tert-butyl-2,2′:6′,2′′-terpyridine; R = H (3a), Cl (3b), $CF_{3}$ (3c), and $NO_{2}$ (3d)), has been synthesized and characterized. The crystal structures of 3a, 3a·DMF·THF, $3b·CH_{3}CN,$ and $3c·CH_{3}CN$ have been determined by X-ray diffraction. Upon excitation at λ > 380 nm, the solid samples of complexes 3a–3d show orange light at 298 K. The anion binding properties of complexes 3a–3d have been studied by UV-vis titration experiments in $CH_{3}CN$ and DMSO. In general, the logK values of 3a–3d with the same anion in $CH_{3}CN$ depend on the substituent R on the acetylide ligand of 3a–3d and follow this order: R = $NO_{2}$ (3d) > $CF_{3}$ (3c) > Cl (3b) > H (3a). For the same complex with different anions, the logK values are in the following order: $F^{−}$ > $OAc^{−}$ > $Cl^{−}$ > $Br^{−}$ ≈ $HSO_{4}^{−}$ ≈ $NO_{3}^{−}$ > $I^{−},$ which is in accordance with the decrease in the basicity of anions. Complex 3d with $NO_{2}$ group shows a dramatic colour change towards $F^{−}$ in DMSO, allowing the naked eye detection of $F^{−}.$
ISSN	14779226
Issue Number	17
Volume Number	44
e-ISSN	13645447
Journal	Dalton Trans.
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2015-05-07
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Anions Platinum Chemistry Urea Crystallography, X-Ray Dimethyl Sulfoxide Drug Design Fluorine Ligands Molecular Conformation Molecular Structure Protein Binding Solvents Temperature Ultraviolet Rays Journal Article Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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