Polynuclear Silver(Ⅰ) Complexes with Phosphorus Ligands and 4,4'-Bipyridine: Synthesis, Structural Characterization and Spectroscopic Properties

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a. Department of Chemistry, Capital Normal University, Beijing 100048, China;
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b. The College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China

Corresponding author: JIN Qiong-Hua,
Received Date: 7 July 2014
Available Online: 10 October 2014
Fund Project: Supported by the National Natural Science Foundation of China (No. 21171119) (No. 21171119) the Committee of Education of the Beijing Foundation of China (No. KM201210028020) (No. 2012AA063201) Program for Excellent Talents of Beijing City (No. 2010D005016000002) (No. KM201210028020) the Beijing Municipal Natural Science Foundation (No. 7122015) (No. 2010D005016000002) and Scientific Research Base Development Program of the Beijing Municipal Commission of Education (No. 7122015)

Two novel silver(Ⅰ) complexes {[Ag(OTf)(PPh₃)(4,4'-bipy)]}_∞ (1) and {[Ag₂-(OTf)₂(dppb)₃](CH₃CN)₄}_∞ (2) (OTf=trifluoromethanesulfonate, PPh₃=triphenylphophine, 4,4'-bipy=4,4'-bipyridine, dppb=bis(diphenylphosphino)butane) have been synthesized and characterized by IR, single-crystal X-ray diffraction, fluorescence spectrum and ¹H NMR spectroscopy. Complex 1 crystallizes in orthorhombic, space group Pna2₁ with a=19.259(2), b=9.85070(12), c=16.3827(17)Å, V=3108.0(5)Å³, C₂₉H₂₃F₃N₂O₃PSAg, M_r=675.39, Z=4, D_c=1.443 g/cm³, F(000)=1360, μ=0.816 mm^-1, the final R=0.0675 and wR=0.1722 for 3662 observed reflections (I>2σ(I)). Complex 2 crystallizes in triclinic, space group P1 with a=12.9370(11), b=13.5261(13), c=16.4539(15)Å, α=106.7120(10), β=97.3830(10), γ=113.027(2)°, V=2441.2(4)Å³, C₉₄H₉₆F₆N₄O₆P₆S₂Ag₂, M_r=1957.43, Z=1, D_c=1.331 g/cm³, F(000)=1006, μ=0.605 mm^-1, the final R=0.0717 and wR=0.1795 for 5128 observed reflections (I>2σ(I)). Complex 1 is of zigzag chain structure, in which each Ag atom is coordinated by one OTf anion, two N atoms from two 4,4'-bipy molecules and one P atom from PPh₃ ligand. In 2, the central Ag atom is coordinated with one OTf anion and three P atoms from three dppb ligands, which leads to the formation of a zigzag ring-bridge-ring chain with each ring consisting of two Ag atoms and two dppb ligands.

Polynuclear Silver(Ⅰ) Complexes with Phosphorus Ligands and 4,4'-Bipyridine: Synthesis, Structural Characterization and Spectroscopic Properties

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