Bis(benzoylacetonato)oxovanadium | 14767-37-4

• 物质功能分类: 有机原料 - 有机金属类化合物 - 有机铋、钴、镨、钆、镓、铱、铼、钇、铽等
• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: Bis(benzoylacetonato)oxovanadium
• 英文别名: (Z)-3-oxo-1-phenylbut-1-en-1-olate;oxovanadium(2+)
• CAS: 14767-37-4
• 化学式: C₂₀H₁₈O₅V
• 分子量: 389.301
• InChiKey: WLGMPWWTPUAUBV-HJMGJEKNSA-L

物化性质

• 熔点：
  218 °C

计算性质

• 辛醇/水分配系数(LogP)：
  1.83
• 重原子数：
  26
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  97.3
• 氢给体数：
  0
• 氢受体数：
  5

安全信息

• TSCA：
  Yes
• 安全说明：
  S24/25
• 危险类别码：
  R22,R36/37/38

反应信息

• 作为反应物：
  描述：

  甲醇 、 Bis(benzoylacetonato)oxovanadium 、 水杨酰肼 反应 2.0h， 生成
  参考文献：
  名称：

  Chemistry of mixed-ligand complexes with variable valence VOz+ (z=2, 3) incorporating pentadentate hydrazone ligands

  摘要：

  2-Hydroxybenzoylhydrazide reacts with an equimolar amount of [(VO)-O-IV(acac)(2)] and [(VO)-O-IV(bzac)(2)] [where acac(-) and bzac(-) are the monoanionic forms of acetylacetone (Hacac) and benzoylacetone (Hbzac) respectively] in the presence of an equimolar amount of 2,2'-bipyridine (bipy) in methanol to afford the tetravalent complexes [(VO)-O-IV(HL1)(bipy)] (1) and [(VO)-O-IV(HL2)(bipy)] (2) respectively [where (HL1)(2-) and (HL2)(2-) represent the dianionic forms of the 2-hydroxybenzoylhydrazone of acetylacetone (H3L1) and benzoylacetone (H3L2) respectively]. On replacing bipy by 8-hydroxyquinoline (Hhq) or vanillin (Hvan), the pentavalent complexes [(VO)-O-V(HL1/HL2)(hq)] (3/4) and [(VO)-O-V(HL1/HL2)(van)] (5/6) respectively were obtained. These pentadentate hydrazone ligands bind the vanadium in a tridentate dinegative meridional fashion utilizing their enolic-O, one imine-N and amide-O (in the enol form), leaving the other two potential donor sites, viz., phenolic-O and the other imine-N, which are practically H-bonded intramolecularly, as is evident from IR, H-1 NMR and X-ray diffraction (of 3 and 4) studies. The EPR active tetravalent complexes 1 and 2 exhibit a quasi-reversible one-electron oxidation peak near +0.90 V, while the pentavalent complexes 3 and 4 exhibit quasi-reversible one-electron reduction peaks near -0.07 V versus SCE in CH2Cl2 solution. The [(VO)-O-V(HL)( van)] complexes 5 and 6 display two quasi-reversible one-electron reduction peaks near +0.06 V and near +0.40 V versus SCE in CH2Cl2 solution, attributed to the successive reduction of V-V -> V-IV and V-IV -> V-III respectively. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.poly.2012.08.075

文献信息

• Chemistry of mixed-ligand complexes with variable valence VOz+ (z=2, 3) incorporating pentadentate hydrazone ligands
  作者：Debashis Patra、Nirmalendu Biswas、Bipul Mondal、Michael G.B. Drew、Tapas Ghosh

  DOI：10.1016/j.poly.2012.08.075

  日期：2012.11

  2-Hydroxybenzoylhydrazide reacts with an equimolar amount of [(VO)-O-IV(acac)(2)] and [(VO)-O-IV(bzac)(2)] [where acac(-) and bzac(-) are the monoanionic forms of acetylacetone (Hacac) and benzoylacetone (Hbzac) respectively] in the presence of an equimolar amount of 2,2'-bipyridine (bipy) in methanol to afford the tetravalent complexes [(VO)-O-IV(HL1)(bipy)] (1) and [(VO)-O-IV(HL2)(bipy)] (2) respectively [where (HL1)(2-) and (HL2)(2-) represent the dianionic forms of the 2-hydroxybenzoylhydrazone of acetylacetone (H3L1) and benzoylacetone (H3L2) respectively]. On replacing bipy by 8-hydroxyquinoline (Hhq) or vanillin (Hvan), the pentavalent complexes [(VO)-O-V(HL1/HL2)(hq)] (3/4) and [(VO)-O-V(HL1/HL2)(van)] (5/6) respectively were obtained. These pentadentate hydrazone ligands bind the vanadium in a tridentate dinegative meridional fashion utilizing their enolic-O, one imine-N and amide-O (in the enol form), leaving the other two potential donor sites, viz., phenolic-O and the other imine-N, which are practically H-bonded intramolecularly, as is evident from IR, H-1 NMR and X-ray diffraction (of 3 and 4) studies. The EPR active tetravalent complexes 1 and 2 exhibit a quasi-reversible one-electron oxidation peak near +0.90 V, while the pentavalent complexes 3 and 4 exhibit quasi-reversible one-electron reduction peaks near -0.07 V versus SCE in CH2Cl2 solution. The [(VO)-O-V(HL)( van)] complexes 5 and 6 display two quasi-reversible one-electron reduction peaks near +0.06 V and near +0.40 V versus SCE in CH2Cl2 solution, attributed to the successive reduction of V-V -> V-IV and V-IV -> V-III respectively. (C) 2012 Elsevier Ltd. All rights reserved.