[Ag(2,3'-DCPA)(CF3SO3)]2 | 196080-61-2

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮
• 英文名称: [Ag(2,3'-DCPA)(CF3SO3)]2
• 英文别名: 2,3'-dicyanodiphenylacetylene silver(I) triflate；disilver;2-[2-(3-cyanophenyl)ethynyl]benzonitrile;trifluoromethanesulfonate
• CAS: 196080-61-2
• 化学式: C₃₄H₁₆Ag₂F₆N₄O₆S₂
• 分子量: 970.383
• InChiKey: DNZOQRXLFXGHMV-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  5.76
• 重原子数：
  54
• 可旋转键数：
  0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  226
• 氢给体数：
  0
• 氢受体数：
  16

反应信息

• 作为产物：
  描述：

  silver trifluoromethanesulfonate 、 2-[(3-cyanophenyl)ethynyl]benzonitrile 以 甲苯 为溶剂， 生成 [Ag(2,3'-DCPA)(CF3SO3)]2
  参考文献：
  名称：

  Association of Dicyanodiphenylacetylenes with Silver(I) Salts in Solution and Solid State:  Electrospray Ionization Mass Spectrometry Samples Aggregates at Subsaturated Concentrations

  摘要：

  Complexes of 2,3'-dicyanodiphenylacetylene (2,3'-DCPA, 1), 2,2'-dicyanodiphenylacetylene (2,2'-DCPA, 2), and 2,4'-dicyanodiphenylacetylene (2,4'-DCPA, 3) with silver(I) salts have been characterized in the solid state by single-crystal X-ray analysis. In addition, aggregates of compounds 1-3 and silver(I) ions have been identified in solution by electrospray ionization mass spectrometry (ESI-MS). The topology of the structures in the solid state, namely finite versus infinite, is found to depend on the substitution pattern of nitrile groups on diphenylacetylene. For 2,3'-DCPA. (1), crystallization with silver(I) triflate (AgCF3SO3), silver(I) perchlorate hydrate (AgClO4 . xH(2)O, x similar to 1), or silver(I) hexafluoroantimonate (AgSbF6) produces cyclic dimers of composition [Ag(1)(X)](2) (X = CF3SO3-(4) or ClO4- (5)) and {[Ag(1)](SbF6)}(2) (6). For these structures, 2,3'-DCPA coordinates to silver(I) ions in a cisoid conformation with respect to the orientation of nitrile groups. Significant deformations of the cyclic dimers are observed as a function of the counterion employed. In contrast to the finite structures involving 2,3'-DCPA, crystallization of 2,2'-DCPA (2) with AgCF3SO3 yields the infinite chain structure [Ag(2)(CF3SO3)] (7). 2,2'-DCPA coordinates to silver(I) in a transoid conformation resulting in a ''half-bow-tie'' motif for the chains. Crystallization of 2,4'-DCPA (3) with AgCF3SO3 produces the infinite, undulating sheet structure [Ag(3)(CF3SO3)] (8) in which helical chains of 2,4'-DCPA coordinated to silver(I) ions are bridged by triflate counterions. Positive ion ESI-MS of solutions of 2,3'-DCPA (1) and AgCF3SO3, AgClO4 . H2O, or AgSbF6 in acetone or acetonitrile show a distribution of aggregates including [Ag-2(1)(2)(X)](+) (X = CF3SO3-, ClO4-, or SbF6-). The composition of these species corresponds to that of the cyclic dimers of complexes 4-6 minus one counterion, X. With 2,2'-DCPA (2) and AgCF3SO3 in acetone or acetonitrile, the aggregates [Ag(2)](+) and [Ag(2)(2)](+) are observed and higher adducts are noted to be present in much lower abundance. It is believed that the predominance of adducts involving one silver(I) ion is due to the formation of chelated species in solution in which 2,2'-DCPA coordinates to a silver(I) ion in a cisoid conformation. Molecular modeling suggests that such species are viable. ESI-MS of 2,4'-DCPA (3) and AgCF3SO3 in acetone or acetonitrile shows the existence of [Ag(3)](+) as well as higher aggregates which are less prevalent. For a given Ligand, aggregation at concentrations of the Ligand and silver(I) salt of ca. 10(-3) M is significant in acetone, however, it is largely disrupted in acetonitrile due to the predominance of acetonitrile Ag(I) adducts. Analysis of the ESI-MS data for all three ligands with AgCF3SO3 in acetone or acetonitrile shows that the aggregate [Ag-2(L)(2)(CF3SO3)](+) is most abundant for L = 2,3'-DCPA (1). It is postulated that the relatively high abundance of [Ag-2(1)(2)(CF3SO3)](+) is indicative of the formation of a cyclic dimer in solution that resembles complex 4.Similarly, it is believed that cyclic dimers exist in solution with ClO4- and SbF6- as well.

  DOI：

  10.1021/ja971135g