Terbium acetylacetonate

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Terbium acetylacetonate
Tb(acac)3(H2O)2.svg
Identifiers
3D model (JSmol)
  • InChI=1S/3C5H7O2.Tb/c3*1-4(6)3-5(2)7;/h3*3H,1-2H3;/q3*-1;+3
    Key: MAPWZFZLNRMAMO-UHFFFAOYSA-N
  • CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.[Tb+3]
Properties
C15H21O6Tb
Molar mass 456.252 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).


Terbium acetylacetonate is a coordination compound with the formula Tb(C5H7O2)3. This anhydrous acetylacetonate complex is often discussed but unlikely to exist per se. The 8-coordinated dihydrate Tb(C5H7O2)3(H2O)2 is a more plausible formula based on the behavior of other lanthanide acetylacetonates. The dihydrate has been characterized by X-ray crystallography. [1] [2] Upon attempted dehydration by heating under vacuum, other hydrated lanthanide tris(acetylacetonate) complexes decompose to give oxo-clusters. [3] The complex can be prepared from terbium salts, acetylacetone, and a base such as ammonia.

3 NH3 + 3 Hacac + Tb(NO3)3 → Tb(acac)3 + 3 NH4NO3

It reacts with 5-[(2-thiophene methylene)amino]-8-hydroxyquinoline (L) by heating in acetonitrile/dichloromethane solution to obtain light yellow [Tb(acac)4(L)6(μ3-OH)2]·CH3CN crystals. [4] It can be used in the preparation of some optical materials. [5] [6] [7]

Related Research Articles

<span class="mw-page-title-main">Terbium</span> Chemical element, symbol Tb and atomic number 65

Terbium is a chemical element; it has symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable, and ductile. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Terbium is never found in nature as a free element, but it is contained in many minerals, including cerite, gadolinite, monazite, xenotime and euxenite.

<span class="mw-page-title-main">Terbium(III) bromide</span> Chemical compound

Terbium(III) bromide (TbBr3) is a crystalline chemical compound.

<span class="mw-page-title-main">Terbium(III) chloride</span> Chemical compound

Terbium(III) chloride (TbCl3) is a chemical compound. In the solid state TbCl3 has the YCl3 layer structure. Terbium(III) chloride frequently forms a hexahydrate.

<span class="mw-page-title-main">Nickel(II) bis(acetylacetonate)</span> Coordination complex

Nickel(II) bis(acetylacetonate) is a coordination complex with the formula [Ni(acac)2]3, where acac is the anion C5H7O2− derived from deprotonation of acetylacetone. It is a dark green paramagnetic solid that is soluble in organic solvents such as toluene. It reacts with water to give the blue-green diaquo complex Ni(acac)2(H2O)2.

<span class="mw-page-title-main">Tris(acetylacetonato)iron(III)</span> Chemical compound

Tris(acetylacetonato) iron(III), often abbreviated Fe(acac)3, is a ferric coordination complex featuring acetylacetonate (acac) ligands, making it one of a family of metal acetylacetonates. It is a red air-stable solid that dissolves in nonpolar organic solvents.

Metal acetylacetonates are coordination complexes derived from the acetylacetonate anion (CH
3COCHCOCH−
3) and metal ions, usually transition metals. The bidentate ligand acetylacetonate is often abbreviated acac. Typically both oxygen atoms bind to the metal to form a six-membered chelate ring. The simplest complexes have the formula M(acac)3 and M(acac)2. Mixed-ligand complexes, e.g. VO(acac)2, are also numerous. Variations of acetylacetonate have also been developed with myriad substituents in place of methyl (RCOCHCOR′−). Many such complexes are soluble in organic solvents, in contrast to the related metal halides. Because of these properties, acac complexes are sometimes used as catalyst precursors and reagents. Applications include their use as NMR "shift reagents" and as catalysts for organic synthesis, and precursors to industrial hydroformylation catalysts. C
5H
7O−
2 in some cases also binds to metals through the central carbon atom; this bonding mode is more common for the third-row transition metals such as platinum(II) and iridium(III).

<span class="mw-page-title-main">Dysprosium acetylacetonate</span> Chemical compound

Dysprosium acetylacetonate is a chemical compound of dysprosium with formula Dy(C5H7O2)3(H2O)n.

<span class="mw-page-title-main">Europium acetylacetonate</span> Chemical compound

Europium acetylacetonate is a coordination complex with formula Eu(C5H7O2)3. Although this anhydrous acetylacetonate complex is widel discussed, some sources suggest that it is really the dihydrate Eu(C5H7O2)3(H2O)2.

<span class="mw-page-title-main">Gadolinium acetylacetonate</span> Chemical compound

Gadolinium acetylacetonate is a coordination compound with the formula Gd(C5H7O2)3. This anhydrous acetylacetonate complex is widely discussed but unlikely to exist per se. The 8-coordinated dihydrate Gd(C5H7O2)3(H2O)2 is a more plausible formula based on the behavior of other lathanide complexes. It has also been characterized twice by X-ray crystallography.

<span class="mw-page-title-main">Neodymium(III) acetylacetonate</span> Chemical compound

Neodymium(III) acetylacetonate is a coordination compound with the chemical formula Nd(O2C5H7)3. Although many sources discuss this anhydrous acetylacetonate complex, it is the dihydrate Nd(O2C5H7)3(H2O)2 that has been characterized by X-ray crystallography. It commonly occurs as a white powder. Upon heating under vacuum, other dihydrated lanthanide trisacetylacetonates convert to oxo-clusters M4O(C5H7O2)10. This result suggests that Nd(O2C5H7)3 may not exist.

<span class="mw-page-title-main">Holmium acetylacetonate</span> Chemical compound

Holmium acetylacetonate is a coordination compound with the formula Ho(C5H7O2)3. This anhydrous acetylacetonate complex is often discussed but unlikely to exist per se. The 8-coordinated dihydrate Ho(C5H7O2)3(H2O)2 is a more plausible formula based on the behavior of other lanthanide acetylacetonates. The dihydrate has been characterized by X-ray crystallography.

<span class="mw-page-title-main">Terbium compounds</span> Chemical compounds with at least one terbium atom

Terbium compounds are compounds formed by the lanthanide metal terbium (Tb). Terbium generally exhibits the +3 oxidation state in these compounds, such as in TbCl3, Tb(NO3)3 and Tb(CH3COO)3. Compounds with terbium in the +4 oxidation state are also known, such as TbO2 and BaTbF6. Terbium can also form compounds in the 0, +1 and +2 oxidation states.

<span class="mw-page-title-main">Zinc acetylacetonate</span> Chemical compound

Zinc acetylacetonate is an acetylacetonate complex of zinc, with the chemical formula of Zn(C5H7O2)2. The compound is in fact a trimer, Zn3(acac)6, in which each Zn ion is coordinated by five oxygen atoms in a distorted trigonal bipyramidal structure.

<span class="mw-page-title-main">Yttrium acetylacetonate</span> Chemical compound

Yttrium acetylacetonate is a coordination compound with the chemical formula Y(C5H7O2)3(H2O)x, or Y(acac)3(H2O)x for short. The value of x can vary from 1 to 3.

<span class="mw-page-title-main">Praseodymium acetylacetonate</span> Chemical compound

Praseodymium acetylacetonate is a coordination complex with the formula Pr(C3H7O2)3. This purported anhydrous acetylacetonate complex is widely discussed but only the dihydrate Pr(C3H7O2)3(H2O)2 has been characterized by X-ray crystallography.

<span class="mw-page-title-main">Erbium acetylacetonate</span> Chemical compound


Erbium acetylacetonate is a coordination compound with the formula Er(C5H7O2)3. This anhydrous acetylacetonate complex is often discussed but unlikely to exist per se. The 8-coordinated dihydrate Er(C5H7O2)3(H2O)2 is a more plausible formula based on the behavior of other lanthanide acetylacetonates. The dihydrate has been characterized by X-ray crystallography.

<span class="mw-page-title-main">Thulium acetylacetonate</span> Chemical compound

Thulium acetylacetonate is a coordination compound with the formula Tm(C5H7O2)3. This anhydrous acetylacetonate complex is often discussed but unlikely to exist per se. The 8-coordinated dihydrate Tm(C5H7O2)3(H2O)2 is a more plausible formula based on the behavior of other lanthanide acetylacetonates. The dihydrate has been characterized by X-ray crystallography. Upon attempted dehydration by heating under vacuum, other hydrated lanthanide tris(acetylacetonate) complexes decompose to give oxo-clusters.

<span class="mw-page-title-main">Lanthanum acetylacetonate</span> Chemical compound

Lanthanum acetylacetonate refers to the coordination complex with the formula La(C5H7O2)3. This anhydrous acetylacetonate complex has not been characterized well, but the dihydrate La(C5H7O2)3(H2O)2 has been characterized by X-ray crystallography.

<span class="mw-page-title-main">Samarium(III) acetylacetonate</span> Chemical compound

Samarium acetylacetonate is a coordination compound with the formula Sm(C5H7O2)3. This anhydrous acetylacetonate complex is widely discussed but unlikely to exist per se. The 8-coordinated dihydrate Sm(C5H7O2)3(H2O)2 is a more plausible formula based on the behavior of other lanthanide acetylacetonates. The dihydrate has been characterized by X-ray crystallography. Upon attempted dehydration by heating under vacuum, other hydrated lanthanide tris(acetylacetonate) complexes decompose to give oxo-clusters.

<span class="mw-page-title-main">Lutetium acetylacetonate</span> Chemical compound

Lutetium acetylacetonate is a coordination compound with the chemical formula Lu(C5H7O2)3, or Lu(acac)3 for short. The complex per se is unlikely to exist, but the dihydrate would be expected based on the behavior of other lanthanide tris(acetylacetonate)s. Consistent with this scenario, It forms adducts Lu(acac)3(phen) and Lu(acac)3(dipy) where phen and bipy are 1,10-phenanthroline and 2,2'-bipyridine, respectively.

References

  1. ↑ Cheng, Shen; Yuguo, Fan; Guofa, Liu; Yutian, Wang; Pinzhe, Lu (1983). Gaodeng Xuexiao Huaxue Xuebao (Chem.J.Chin.Univ.). 4: 769.{{cite journal}}: Missing or empty |title= (help)
  2. ↑ Cambridge Crystallographic Data Center, number CCDC 1121251.
  3. ↑ Tamang, Sem Raj; Singh, Arpita; Bedi, Deepika; Bazkiaei, Adineh Rezaei; Warner, Audrey A.; Glogau, Keeley; McDonald, Corey; Unruh, Daniel K.; Findlater, Michael (2020). "Polynuclear Lanthanide–Diketonato Clusters for the Catalytic Hydroboration of Carboxamides and Esters". Nat. Catal. 3 (2): 154–162. doi:10.1038/s41929-019-0405-5. S2CID   209897045.
  4. ↑ Wen-Min Wang, Lei Huai, Xi-Wen Wang, Kai-Jun Jiang, Hai-Yun Shen, Hong-Ling Gao, Ming Fang, Jian-Zhong Cui (2020). "Structures, magnetic refrigeration and single molecule-magnet behavior of five rhombus-shaped tetranuclear Ln( iii )-based clusters". New Journal of Chemistry. 44 (25): 10266–10274. doi:10.1039/D0NJ01969K. ISSN   1144-0546. S2CID   219448650 . Retrieved 2021-09-20.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  5. ↑ Rui Jia, Ting Gao, Yu Yang, Wenbin Sun, Ruoxi Chen, Pengfei Yan, Guangfeng Hou (Sep 2015). "Luminescence of Salen Lanthanide Bimetallic Complexes: Dual Emission and Energy Transfer: Luminescence of Salen Lanthanide Bimetallic Complexes". Zeitschrift für anorganische und allgemeine Chemie. 641 (11): 1974–n/a. doi:10.1002/zaac.201500138. Archived from the original on 2021-09-16. Retrieved 2021-09-20.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  6. ↑ Gaël Zucchi, Taewoo Jeon, Denis Tondelier, Dmitry Aldakov, Pierre Thuéry, Michel Ephritikhine, Bernard Geffroy (2010). "White electroluminescence of lanthanide complexes resulting from exciplex formation". Journal of Materials Chemistry. 20 (11): 2114. doi:10.1039/b921740a. ISSN   0959-9428 . Retrieved 2021-09-20.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  7. ↑ Anna M. Kaczmarek, Ying‐Ya Liu, Mariusz K. Kaczmarek, Hengshuo Liu, Flavia Artizzu, Luís D. Carlos, Pascal Van Der Voort (2020-01-27). "Developing Luminescent Ratiometric Thermometers Based on a Covalent Organic Framework (COF)". Angewandte Chemie International Edition. 59 (5): 1932–1940. doi:10.1002/anie.201913983. ISSN   1433-7851. PMID   31777996. S2CID   208337469. Archived from the original on 2021-09-16. Retrieved 2021-09-20.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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