diethyl 4-(2,2'-bipyrid-4-yl)phenylphosphonate | 257620-47-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: diethyl 4-(2,2'-bipyrid-4-yl)phenylphosphonate
• 英文别名: bppp；4-(4-Diethoxyphosphorylphenyl)-2-pyridin-2-ylpyridine
• CAS: 257620-47-6
• 化学式: C₂₀H₂₁N₂O₃P
• 分子量: 368.372
• InChiKey: IVGOWEKDZOTGDT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  26
• 可旋转键数：
  7
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  61.3
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  顺-双(2,2'-二吡啶基)二氯化钌(II)二水合物 、 diethyl 4-(2,2'-bipyrid-4-yl)phenylphosphonate 以 乙醇 为溶剂， 生成 [(bpy)2Ru(diethyl-4-(2,2'-bipyrid-4-yl)phenylphosphonate)] hexafluorophosphate monohydrate
  参考文献：
  名称：

  Visible Light Photolysis of Hydrogen Iodide Using Sensitized Layered Metal Oxide Semiconductors:  The Role of Surface Chemical Modification in Controlling Back Electron Transfer Reactions

  摘要：

  The internally platinized wide bandgap semiconductor K4Nb6O17 can be sensitized by [(bpy)(2)Ru(4-(2,2'-bipyrid-4-yl)-phenylphosphonic acid](PF6)(2) (1). In aqueous iodide solutions at pH 2, the visible light photolysis of HI, to form H-2 and I-3(-), is catalyzed by 1/K4-xHxNb6O17/Pt. The strong bond between the surface and the phosphonate group of 1 allows one to adsorb other surface species, which decrease the rate of the back electron transfer reaction between conduction band electrons and I-3(-) ions. Methylphosphonic acid and undecylphosphonic acid do not form good surface monolayers on 1/K4-xHxNb6O17 and do not increase the rate of hydrogen evolution. Anionic surface modifiers [TiNbO5](n)(n-), derived from exfoliation of KTiNbO5, and poly(styrenesulfonate), PSS, increase the initial hydrogen evolution rate by factors of 3 and 5, respectively. In the latter case, the initial quantum yield for HI photolysis is ca. 3%. Transient diffuse reflectance spec troscopy was used to monitor the formation and disappearance of I-3(-) ions with 1/K4-xHxNb6O17 and PSS/1/K4-xHxNb6O17. The rate constant for the back electron transfer reaction between conduction band electrons and I-3(-) ions decreases from 3.17(+/-0.03) x 10(7) to 3.01(+/-0.02) x 10(6) M(-1) s(-1) upon adsorption of PSS.

  DOI：

  10.1021/jp9625319

文献信息

• Luminescent Ruthenium(II) Bipyridyl−Phosphonic Acid Complexes:  pH Dependent Photophysical Behavior and Quenching with Divalent Metal Ions
  作者：Marco Montalti、Seema Wadhwa、Won Y. Kim、Rachael A. Kipp、Russell H. Schmehl

  DOI：10.1021/ic991143t

  日期：2000.1.1

  from bpy reduction. For the bppp and bpdp complexes luminescence arises from a Ru(d pi)-->bpy-phosphonate (pi*) MLCT state; the phosphonic acid complexes luminescence at higher energies from a MLCT state not clearly isolated on one ligand. Iron(III) and copper(II) complex with and very efficiently quench the luminescence of all the phosphonic acid complexes in nonaqueous solvents. The quenching mechanism

  提出了具有带膦酸酯和膦酸取代基的二亚胺配体的一系列Ru（II）二吡啶基配合物的合成，氧化还原行为和光物理性质。检查的含膦酸酯的配体包括4-（2,2'-联吡啶-4-基）苄基膦酸二乙酯（bpbzp），4-（2,2'-联吡啶-4-基）二乙基苯膦酸（bppp）和4制备了膦酸二乙酯和膦酸的[4，4′-（二乙基膦酰基）-2，2′-联吡啶（bpdp）和[（bpy）2 Ru（L）]（PF 6）2络合物。膦酸酯络合物的Ru（III / II）电位比膦酸更正，第一个还原现象位于bppp和bpdp络合物的含膦酸酯的配体上。膦酸络合物的第一次还原具有更大的负电势，无法与bpy还原区分开。对于bppp和bpdp复合物，发光来自Ru（d pi）-> bpy-膦酸酯（pi *）MLCT状态；膦酸以更高的能量从MLCT状态发光，但未在一个配体上清楚地分离出来。铁（III）和铜（II）与非水溶剂中所有膦酸配合物的发光非常有