Massoud Al Shima'a A, Langer Vratislav, Abu-Youssef Morsy A M
Physical Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden.
Acta Crystallogr C. 2009 Sep;65(Pt 9):m352-4. doi: 10.1107/S0108270109030509. Epub 2009 Aug 19.
The title compound, [Ag(C(7)H(10)N(2))(2)]NO(3).2H(2)O or [Ag(dmap)(2)]NO(3).2H(2)O, where dmap is 4-(dimethylamino)pyridine, has a distorted linear coordination geometry around the Ag(I) ion. A novel pattern of water-nitrate hydrogen-bonded anionic strands is formed in the c direction, with the cationic Ag(dmap)(2) monomers trapped between them. The Ag(I) ion and the nitrate group atoms, as well as the water molecules (including the H atoms), are on a crystallographic mirror plane (Wyckoff position 4a). The influence of bulky methyl substituents in position 4 of the 4-(dimethylamino)pyridine ligand on packing is discussed. The absolute structure was determined unequivocally.
标题化合物[Ag(C₇H₁₀N₂)₂]NO₃·2H₂O或[Ag(dmap)₂]NO₃·2H₂O（其中dmap为4-(二甲基氨基)吡啶）在Ag(I)离子周围具有扭曲的线性配位几何结构。在c方向形成了一种新型的水 - 硝酸根氢键阴离子链模式，阳离子[Ag(dmap)₂]⁺单体被困在它们之间。Ag(I)离子、硝酸根基团原子以及水分子（包括H原子）位于一个晶体学镜面（Wyckoff位置4a）上。讨论了4-(二甲基氨基)吡啶配体4位上庞大甲基取代基对堆积的影响。明确确定了绝对结构。
