Co(hfac)₂*2H₂O

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Co(hfac)₂*2H₂O
• 英文别名: cobalt(2+);(Z)-1,1,1,5,5,5-hexafluoro-4-oxopent-2-en-2-olate;hydrate
• 化学式: C₁₀H₂CoF₁₂O₄*2H₂O
• 分子量: 509.128
• InChiKey: XPVNKVXSBTZRRC-SUXDNRKISA-L

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  Co(hfac)₂*2H₂O 、 4-甲苯基异腈 以 丙酮 为溶剂， 生成
  参考文献：
  名称：

  Nitromalonaldehyde as a ligand. Synthesis and reactivity with isocyanides of monomeric tris(ligand)metal(II) complexes and the crystal structure of pentakis(4-methylphenyl isocyanide)cobalt(I) tris(nitromalonaldehydo)cobaltate(II)

  摘要：

  DOI：

  10.1021/ic50223a024
• 作为产物：
  描述：

  cobalt(II) chloride hexahydrate 、 六氟乙酰丙酮 在 NaOH 作用下， 以 水 为溶剂， 生成 Co(hfac)₂*2H₂O
  参考文献：
  名称：

  Nitromalonaldehyde as a ligand. Synthesis and reactivity with isocyanides of monomeric tris(ligand)metal(II) complexes and the crystal structure of pentakis(4-methylphenyl isocyanide)cobalt(I) tris(nitromalonaldehydo)cobaltate(II)

  摘要：

  DOI：

  10.1021/ic50223a024

文献信息

• A family of 2p-3d complexes based on 4,5-dimethyltriazole nitronyl nitroxide radical: synthesis, structure, and magnetic properties
  作者：Jian Yun Shi、Zhi Long Ma、Meng Chen Wang、Li Tian

  DOI：10.1016/j.ica.2020.120122

  日期：2021.2

  using 4,5-dimethyltriazole nitronyl nitroxide radical. All of the complexes with the same formula of [M(hfac)2(4,5-di-Me-3-NIT-trz)2] [M = Co(II) 1, Ni(II) 2, Cu(II) 3; 4,5-di-Me-3-NIT-trz = 2-[3-(4,5-dimethyl-l,2,4-triazolyl)]-4,4,5,5-tetramethylimida- zoline-1-oxyl-3-oxide; hfac = hexafluoroacetylacetone] are characterized by X-ray analysis, and their magnetic properties were studied in detail. The

  摘要利用4,5-二甲基三唑硝酰基硝基氧自由基成功合成了3种2p-3d配合物。所有具有相同分子式[M（hfac）2（4,5-di-Me-3-NIT-trz）2]的配合物[M = Co（II）1，Ni（II）2，Cu（II ）3; 4,5-二-Me-3-NIT-trz = 2- [3-（4,5-二甲基-1,2,4-三唑基）]-4,4,5,5-四甲基咪唑啉-1- 3-氧化氧基; 通过X射线分析表征[hfac ＝六氟乙酰丙酮]，并详细研究了它们的磁性能。1-3中的金属离子全部为扭曲的八面体构型，来自两个双齿hfac-配体的四个氧原子和来自两个不同的4,5-di-Me-3-NIT-trz配体的两个三唑N原子。1-3的磁行为表明金属离子和自由基是反铁磁耦合的（JCo-rad = -7.11 cm-1，对于1； JNi-rad = -1.63 cm-1，对于2； JCu-rad =- 8.71厘米-1，
• Synthesis, crystal structures, and magnetic properties of nitroxide radical-coordinated manganese(II) and cobalt(II) complexes
  作者：Yan-Li Gao、Cuifang Tian、Pingqiang Gao、Yurong Jiao、Ying Gong、Xiangrong Ma

  DOI：10.1177/17475198211003487

  日期：2021.7

  Coordination complexes constructed from the nitronyl nitroxide radical NIT-Pyra-3-Isobu and MII(hfac)2(H2O)2 as building blocks (NIT-Pyra-3-Isobu = 2-(3-isobutyl-pyrazole)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, hfac = hexafluoroacetylacetonato, and M = Mn or Co) are successfully synthesized. The crystal structures of the coordination compounds reveal the usefulness of the functionalized radical

  由NIT-Pyra-3-Isobu和M II（hfac）2（H 2 O）2组成的配位配合物作为结构单元（NIT-Pyra-3-Isobu = 2-（3-异丁基-吡唑）-4,4,5,5-四甲基咪唑啉-1-氧基-3-氧化物，hfac =六氟乙酰丙酮，M = Mn或Co ）已成功合成。配位化合物的晶体结构揭示了官能化自由基在提供离散或扩展结构方面的有用性。单晶X射线衍射分析表明，配体通过NO•的氧原子和吡唑键的N原子与金属配位，并且金属采用八面体几何结构，形成一维之字形链系统。锰和钴的磁性表现出金属中心与有机基团之间的整体反铁磁相互作用。
• Syntheses and magnetic properties of a bis-tridentate nitronyl nitroxide radical and its metal complexes
  作者：Hao Miao、Miao Li、Hong-Qing Li、Fu-Xing Shen、Yi-Quan Zhang、Xin-Yi Wang

  DOI：10.1039/c9dt00207c

  日期：——

  The first bis-tridentate nitronyl nitroxide mono-radical was synthesized. From this ligand and a bis-bidentate nitronyl nitroxide ligand, metal complexes of MnII and CoII ions were also synthesized and characterized. Field-induced slow magnetic relaxation was observed in the radical-bridged CoII complex.

  合成了第一个双三齿硝酰基氮氧自由基。从该配体和双齿的亚硝酰基氮氧化物配体，还合成并表征了Mn II和Co II离子的金属配合物。在自由基桥联的Co II配合物中观察到了场诱导的慢磁弛豫。
• Polynuclear CoII,III compounds containing pivalate and hexafluoroacetylacetonate anions in the ligand shell and their heterospin complexes with nitroxides
  作者：E. Yu. Fursova、O. V. Kuznetsova、V. I. Ovcharenko、G. V. Romanenko、A. S. Bogomyakov、M. A. Kiskin、I. L. Eremenko

  DOI：10.1007/s11172-010-0218-9

  日期：2010.6

  The reaction of cobalt(II) bis(hexafluoroacetylacetonate) (Co(hfac)2) with polynuclear CoII or CoII,III pivalates, [Na2Co4(OH)2(Piv)8(EtOH)4], [Co2(H2O)(Piv)4(HPiv)4], and [CoIII2CoII4(O)2(Piv)10(H2O)(THF)3]·1.5THF (Piv is pivalate), affords the previously unknown cobalt compounds containing coordinated Piv and hfac anions in the ligand shell, viz., the dinuclear complex [Na2Co2(hfac)4(Piv)2(Me2CO)4]

  双六氟乙酰丙酮钴 (II) (Co(hfac)2) 与多核 CoII 或 CoII,III 新戊酸酯 [Na2Co4(OH)2(Piv)8(EtOH)4]、[Co2(H2O)(Piv) 的反应)4(HPiv)4] 和 [CoIII2CoII4(O)2(Piv)10(H2O)(THF)3]·1.5THF（Piv 是新戊酸盐），提供了以前未知的含有配位 Piv 和 hfac 阴离子的钴化合物配体壳，即双核配合物 [Na2Co2(hfac)4(Piv)2(Me2CO)4]、四核配合物 [Co4(Piv)4(hfac)2(OH)2(HPiv)4]·HPiv，和十四核复合物 [CoIII4CoII10(Piv)10(hfac)4(OH)14(O)2(HPiv)4]·2HPiv·2H2O·3C7H16，分别。十四核复合物具有从溶液中沉淀氮氧化物的不寻常能力，因此合成了以下新的异旋晶固体：[Co14(P
• Hard Magnets after Freezing of Spin Dynamics of Soft Magnets in Cobalt(II)–Radical Chain Compounds
  作者：Yoshitomo Okamura、Norio Ishii、Takashi Nogami、Takayuki Ishida

  DOI：10.1246/bcsj.20090316

  日期：2010.6.15

  Several metal–radical alternating chains ([Co(hfac)2(CnPNN)]) were prepared, and their crystal structures and magnetic properties were systematically studied, where CnPNN stands for a phenylnitronyl nitroxide ligand having a linear Cn alkoxy group at the ortho or para position. X-ray crystal structure analysis was successfully performed for [Co(hfac)2(p-C5PNN)] (p-5). The chain structure is similar to those of the known p-butoxy and o-ethoxy derivatives. Compound p-5 showed a very large coercive field of 51 kOe (4.1 MA m−1) and a saturation magnetization of 9.7 × 103 erg Oe−1 mol−1 at 6 K. o-Propoxy and o-pentoxy derivatives also exhibited large coercive fields of 50–54 kOe at 5–6 K. The activation energies of magnetization reorientation for the present compounds were estimated to be as large as 290–360 K from Arrhenius analysis using ac susceptibility data. In a temperature range of ca. 10–40 K, all of the present compounds behaved as very soft magnets, as indicated by no hysteresis in the ferromagnetic M–H curves. We propose a mechanism for the drastic soft–hard switch. The hard character grows immediately after freezing of the spin dynamics owing to the strong magnetic anisotropy.

  制备了几种金属自由基交替链（[Co(hfac)2(CnPNN)]），并系统研究了它们的晶体结构和磁性能，其中CnPNN代表邻位或邻位具有直链Cn烷氧基的苯基硝酰基硝基氧配体。对位。成功对 [Co(hfac)2(p-C5PNN)] (p-5) 进行了 X 射线晶体结构分析。链结构与已知的对丁氧基和邻乙氧基衍生物的链结构相似。化合物 p-5 在 6 K 时表现出非常大的矫顽磁场 51 kOe (4.1 MA m−1) 和 9.7 × 103 erg Oe−1 mol−1 的饱和磁化强度。邻丙氧基和邻戊氧基衍生物也表现出很大的磁化强度。 5-6 K 时的矫顽磁场为 50-54 kOe。根据使用交流磁化率数据的阿伦尼乌斯分析，本发明化合物的磁化重新取向的活化能估计高达 290-360 K。在约的温度范围内。在 10–40 K 下，所有现有化合物都表现得非常软，正如铁磁 M–H 曲线中没有磁滞现象所表明的那样。我们提出了一种彻底的软硬切换机制。由于强磁各向异性，自旋动力学冻结后，硬特性立即增长。