Synthesis and crystal structure of three mixed-ligand silver(I) complexes constructed from 1,2-Di(4-pyridyl)ethylene and different organic carboxylate anions |
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| Authors: | C C Wang P Wang |
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| Institution: | 1. Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture), Ministry of Education, Beijing, 100044, P.R. China
2. Department of Environmental Science and Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, P.R. China
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| Abstract: | The reaction of AgNO3 with 1,2-di(4-pyridyl)ethylene (Dpe) and 2,3-pyrazinedicarboxylic acid (H2Pzdc) or 2,2′-bipyridyl-4,4′-dicarboxylic acid (H2Bpdc) or salicylic acid (HSa) in alcohol aqueous solution produces block-like crystals of Ag2(Dpe)2]Ppzdc) · 6H2O (I), Ag3(Dpe)3](Bpdc)(NO3) · 4H2O (II), and Ag2(Dpe)2](Sa)(NO3) · 3H2O (III) at room temperature. Crystal I is monoclinic: space group P21/m, a = 7.5370(7), b = 17.2309(16), c = 12.5131(11) Å, β = 98.3780(10)°, V = 1607.7(3) Å3, Z = 2. Crystal II is triclinic: space group $P\bar 1$ , a = 8.8260(8), b = 11.1149(11), c = 13.3751(14) Å, α = 102.0140(10)°, β = 105.696(2)°, γ = 99.5940(10)°, V = 1200.4(2) Å3, Z = 1. Crystal III is triclinic: space group $P\bar 1$ , a = 7.3600(6), b = 2.7549(11), c = 18.2241(16) Å, α = 106.225(2)°, β = 98.0150(10)°, γ = 99.5400(10)°, V = 1588.5(2) Å3, Z = 2. All the three complexes contain sandwich-like crystal structures, in which anionic sheets built up from different anions (Pzdc2?, Bpdc2?, Sa?) and lattice water molecules via rich hydrogen-bonding interactions are inserted between the cationic silver complexes layers. The lattice water molecules are situated among the framework of the crystal structure and stabilized by rich hydrogen-bonding interactions, and lattice water molecules may play a role in the orientation of the organic anions in the crystal packing. |
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