[Co^II(OTf)₂(MeCN)₂] | 834868-47-2

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机磺酸及其衍生物
• 英文名称: [Co^II(OTf)₂(MeCN)₂]
• 英文别名: Co(OTf)₂(MeCN)₂
• CAS: 834868-47-2
• 化学式: C₆H₆CoF₆N₂O₆S₂
• 分子量: 439.239
• InChiKey: MVABQGXLGHXNAU-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为反应物：
  描述：

  [Co^II(OTf)₂(MeCN)₂] 、 2,6-双[1,1-双(吡啶-2-基)乙基]吡啶 以 乙腈 为溶剂， 生成 [Co(2,6-bis(1,1-bis(2-pyridyl)-ethyl)pyridine)(acetonitrile)](OTf)₂
  参考文献：
  名称：

  Molecular Cobalt Pentapyridine Catalysts for Generating Hydrogen from Water

  摘要：

  A set of robust molecular cobalt catalysts for the generation of hydrogen from water is reported. The cobalt complex supported by the parent pentadentate polypyridyl ligand PY5Me(2) features high stability and activity and 100% Faradaic efficiency for the electrocatalytic production of hydrogen from neutral water, with a turnover number reaching 5.5 x 10(4) mol of H(2) per mole of catalyst with no loss in activity over 60 h. Control experiments establish that simple Co(II) salts, the free PYSMe(2) ligand, and an isostructural PY5Me(2) complex containing redox-inactive Zn(II) are all ineffective for this reaction. Further experiments demonstrate that the overpotential for H(2) evolution can be tuned by systematic substitutions on the ancillary PYSMe(2) scaffold, presaging opportunities to further optimize this first-generation platform by molecular design.

  DOI：

  10.1021/ja202743r

文献信息

• Reductive Cyclization of Unactivated Alkyl Chlorides with Tethered Alkenes under Visible‐Light Photoredox Catalysis
  作者：Miguel Claros、Felix Ungeheuer、Federico Franco、Vlad Martin‐Diaconescu、Alicia Casitas、Julio Lloret‐Fillol

  DOI：10.1002/anie.201812702

  日期：2019.4

  of unactivated alkyl chlorides with tethered alkenes. The cleavage of strong C(sp3)−Cl bonds is mediated by a highly nucleophilic low‐valent cobalt or nickel intermediate generated by visible‐light photoredox reduction employing a copper photosensitizer. The high basicity and multidentate nature of the ligands are key to obtaining efficient metal catalysts for the functionalization of unactivated alkyl

  大量市售的烷基氯的化学惰性阻碍了它们作为化学转化反应物的广泛应用。这项工作提出了一种金属光氧化还原方法，用于实现未活化的烷基氯与束缚烯烃的催化分子内还原环化。强C(sp 3 )−Cl键的断裂是由使用铜光敏剂的可见光光氧化还原还原产生的高度亲核的低价钴或镍中间体介导的。配体的高碱度和多齿性质是获得用于未活化的烷基氯官能化的有效金属催化剂的关键。
• Synthesis, structures and characterization of complexes containing a 2,6-bis(guanidinyl)pyridine ligand on iron(II), cobalt(II), nickel(II), copper(I), copper(II) and zinc(II)
  作者：James E. Allen、W. Scott Kassel、Nicholas A. Piro

  DOI：10.1016/j.poly.2018.08.012

  日期：2018.11

  Co2+, Ni2+, Cu+, Cu2+ and Zn2+) was explored. The complexes [1-Fe(OTf)(MeCN)]OTf, [1-Co(OTf)(MeCN)]OTf, [1-Ni(MeCN)3](OTf)2, [1-Cu]OTf, [1-Cu(OTf)(MeCN)]OTf, and [1-Zn(OTf)2] were structurally characterized by X-ray diffraction. Across this series, 1 exhibits both facial and meridional coordination modes depending on metal ion size. The metal complexes were additionally characterized spectroscopically

  摘要由Htbo和2,6-二溴吡啶合成了一种新的螯合胍配体2,6-双（tbo）吡啶（1，tbo = 1,4,6-三氮杂环辛烯）及其配位化学。探索了第一行过渡金属离子（Fe2 +，Co2 +，Ni2 +，Cu +，Cu2 +和Zn2 +）。配合物[1-Fe（OTf）（MeCN）] OTf，[1-Co（OTf）（MeCN）] OTf，[1-Ni（MeCN）3]（OTf）2，[1-Cu] OTf，[通过X射线衍射对1-Cu（OTf）（MeCN）] OTf和[1-Zn（OTf）2]进行结构表征。在整个系列中，1会根据金属离子的大小同时显示出脸部和经络的协调模式。还对金属配合物进行了光谱和电化学表征，发现其1比几种相关的含胍的螯合剂弱。
• A Periodic Walk through a Series of First‐Row, Oxido‐Bridged, Heterodimetallic Molecules: Synthesis and Structure
  作者：Eric M. Goggins、Travis T. Lekich、Walter W. Weare、Roger D. Sommer、Marcos A. Ribeiro、Carlos B. Pinheiro

  DOI：10.1002/ejic.201501325

  日期：2016.3

  A series of heterodimetallic molecules, centered around an LTi=OM2+L′ (M = Mn, Fe, Co, Ni, Cu, Zn) core, are described. Each of these complexes are structurally similar, with L = tmtaa and L′ = Py5Me2. The Ti=OM linkage is slightly bent, varying from 157° (Mn) to 170° (Zn), with bond lengths typical of a dative bond between the Ti=O group and the M2+ center. The relative strength of the heterodimetallic

  描述了一系列以 LTi=OM2+L'（M = Mn、Fe、Co、Ni、Cu、Zn）核为中心的异质二金属分子。这些复合物中的每一个在结构上都相似，L = tmtaa 和 L' = Py5Me2。Ti=OM 键稍微弯曲，从 157° (Mn) 到 170° (Zn) 不等，键长是 Ti=O 基团和 M2+ 中心之间典型的配价键。异二金属键的相对强度与 M2+ 前体的路易斯酸度相关，其中 Mn2+ 表现出最强的相互作用，而 Ni2+ 最弱。通过改变金属特性，可以调整分子的电化学特性以及 M3+/2+ 氧化还原对。这一系列配合物为研究通过单个原子连接的异二金属分子的结构/功能关系提供了一个平台。例如，
• Understanding light-driven H₂ evolution through the electronic tuning of aminopyridine cobalt complexes
  作者：Arnau Call、Federico Franco、Noufal Kandoth、Sergio Fernández、María González-Béjar、Julia Pérez-Prieto、Josep M. Luis、Julio Lloret-Fillol

  DOI：10.1039/c7sc04328g

  日期：——

  Electronic effects provide a general mechanistic scenario for rationalizing photocatalytic water reduction activity with aminopyridine cobalt complexes.

  电子效应为理解氨基吡啶钴配合物光催化水还原活性提供了一个一般的机理场景。