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Structure determination of the silver carboxylate dimer [Ag(O2C20H39)]2, silver arachidate, using powder X-ray diffraction methods

  • Peter W. Stephens (a1), James A. Kaduk (a2), Thomas N. Blanton (a3), David R. Whitcomb (a4), Scott T. Misture (a5) and Manju Rajeswaran (a3)...


High-resolution powder X-ray diffraction and density functional plane wave pseudo-potential techniques have been used to obtain an optimized structural model of silver arachidate, [Ag(O2C(CH2)18CH3]2. The unit cell is triclinic, space group P-1 with cell dimensions of a = 4.1519(10) Å, b = 4.7055(10) Å, c = 53.555(4) Å, α = 89.473(15)°, β = 87.617(5)° and γ = 76.329(5)°. The structure is characterized by an 8-membered ring dimer of Ag atoms and carboxyl groups joined by four-member Ag–O rings with fully extended zigzag side chains, giving rise to one-dimensional chains along the b-axis.


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