[Ru3(μ3-oxo)(acetate)6(pyridine)2(pyrazine)]PF6 | 67815-40-1

• 英文名称: [Ru3(μ3-oxo)(acetate)6(pyridine)2(pyrazine)]PF6
• 英文别名: [Ru3O(CH3COO)6(pyrazine)2(4,4'-bipyridine)]PF6
• CAS: 67815-40-1
• 化学式: C₂₆H₃₂N₄O₁₃Ru₃*F₆P
• 分子量: 1056.73
• InChiKey: UBUXHEVOLUQSDC-UHFFFAOYSA-H

反应信息

• 作为产物：
  描述：

  吡嗪 、 [Ru₃(μ₃-O)(-CH₃COO)₆(pyridine)₂(CH₃OH)](PF₆) 以 二氯甲烷 为溶剂， 生成 [Ru3(μ3-oxo)(acetate)6(pyridine)2(pyrazine)]PF6
  参考文献：
  名称：

  Electrospray Ionization Tandem Mass Spectrometry of Polymetallic μ-Oxo- and Carboxylate-Bridged [Ru₃O(CH₃COO)₆(Py)₂(L)]⁺ Complexes:  Intrinsic Ligand (L) Affinities with Direct Access to Steric Effects

  摘要：

  [Ru3O(CH3COO)(6)(py)(2)(L)](+) (1(+)) are polymetallic singly charged cationic complexes with a unique structural arrangement in which three neutral ligands are bound via ruthenium atoms to a highly delocalized symmetrical triangular tridentate [Ru3O(CH3COO)(6)]+ core bonded by a mu-oxo and six carboxylate bridges. Several 1(PF6) complexes with various terminal ligands (L) and two pyridines (py) used as reference ligands were synthesized. These complexes were directly transferred from a methanol solution to the gas phase and characterized by electrospray ionization mass spectrometry (ESI-MS) and subsequently dissociated by gentle collisions with argon molecules via ESI-MS/MS. The applicability of Cooks' kinetic method (CKM) to rank the binding affinities of a set of L to the [Ru3O(CH3COO)(6)](+) core was demonstrated by the good linear correlation (R=0.98) observed in a CKM plot for which the relative peak intensities of the two fragment ions arising from the competitive loss of py or L as well as L affinities predicted by PM3(tm) calculations were used. Steric effects greatly affect L affinities, as evidenced by the values measured for ortho-substituted pyridines. The gaseous 1(+) were found to display a relatively high effective temperature of 1258 K. We have therefore extended CKM to investigate metal-ligand interactions, showing its usefulness to order and measure intrinsic (no solvent or counterion effects) ligand affinities to large and structurally intricate polymetallic complexes.

  DOI：

  10.1021/om060026k