Polynuclear silver(I) complexes of diphosphine ligands and isoquinoline: Synthesis, structural characterization and spectroscopic properties

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• 作者：Qiong-Hua Jin^a ; ^{jinqh@mail.cnu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Yuan Yuan^a ; Yu-Ping Yang^b ; Qi-Ming Qiu^a ; Min Liu^c ; Zhong-Feng Li^a ; Zhen-Wei Zhang^d ; Cun-Lin Zhang^d
• 关键词：Silver(I) ; Bis(diphenylphosphino)methane ; Isoquinoline ; Luminescent ; Terahertz spectroscopy
• 刊名：Polyhedron
• 出版年：2015
• 出版时间：24 November 2015
• 年：2015
• 卷：101
• 期：Complete
• 页码：56-64
• 全文大小：2709 K

文摘

The reactions of diphosphine ligands and isoquinoline (i-C₉H₇N) with Ag salts in the mixed solvent of methanol (MeOH) and dichloromethane (CH₂Cl₂) generate the complexes [Ag₂(dppm)₂(NO₂)₂]·(i-C₉H₇N)₂ (1), [Ag₂(dppm)₂(i-C₉H₇N)₂(BF₄)](BF₄) (2), {[Ag(dppe)(i-C₉H₇N)₂](CF₃SO₃)·(i-C₉H₇N)}_n (3), {[Ag(dppb)(i-C₉H₇N)₂](BF₄)₂·(i-C₉H₇N)_0.5}_n (4) and {[Ag(dppb)(i-C₉H₇N)(CF₃SO₃)]·(i-C₉H₇N)}_n (5). These complexes were all characterized by IR, elemental analysis, X-ray diffraction, luminescence, ³¹P and ¹H NMR spectroscopy. Complexes 1 and 2 have dinuclear structures, while complexes 3, 4 and 5 have 1D infinite zigzag chain structures. Complexes 1 and 2 are metal clusters in which there exist Ag⋯Ag metal bonds, whilst in compounds 3, 4 and 5, two silver atoms are bridged by the diphosphine ligands to form the 1D infinite zigzag chains. Complexes 3 and 5 are 2D topologically promising architectures and complex 4 is a 3D topologically promising architecture. In addition, complexes 1–5 exhibit interesting fluorescence in the solid state at room temperature. At the same time, we also studied the terahertz spectra of the complexes, which show more accurate characteristics of each group of complex.