| 词条 | Ruthenium(III) acetylacetonate |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 439552228 | ImageFile1 = Structure of Ruthenium (III) acac.png | ImageSize1 = 150px | ImageFile2 = Tris(acetylacetonato)Ruthenium(III)-3D-balls-by-AHRLS-2012.png | ImageSize2 = 150px | IUPACName = Tris(acetylacetonato)Ruthenium (III) | OtherNames = Ru(acac)3; Ruthenium (III) 2,4-Pentanedionate; Ruthenium (III) acetylacetonato, 2,4-pentanedione ruthenium (III) |Section1={{Chembox Identifiers | Abbreviations = | CASNo = 14284-93-6 | CASNo_Ref = {{cascite|correct|??}} | EINECS = | PubChem = 16057901 | InChI = 1S/3C5H8O2.Ru/c3*1-4(6)3-5(2)7;/h3*3H2,1-2H3; | RTECS = | MeSHName = | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = | KEGG_Ref = {{keggcite|correct|kegg}} | KEGG = | SMILES = CC(=O)CC(=O)C.CC(=O)CC(=O)C.CC(=O)CC(=O)C.[Ru] }} |Section2={{Chembox Properties | Formula = (C5H7O2)3Ru | MolarMass = 398.39 g/mol | Appearance = Dark Violet Solid | Density = 1.54 g/cm3[1] | MeltingPtC = 260 | MeltingPt_notes = | BoilingPt = | BoilingPt_notes = | Solubility = insoluble in water | SolubleOther = soluble in most organic solvents | Solvent = | pKa = | pKb = |Section7={{Chembox Hazards | EUClass = | MainHazards = | NFPA-H = | NFPA-F = | NFPA-R = | NFPA-S = | RPhrases = {{R36}}, {{R37}}, {{R38}} | SPhrases = {{S26}}, {{S36}} | RSPhrases = | FlashPt = | AutoignitionPt = | ExploLimits = | PEL = }} Ruthenium(III) acetylacetonate is a coordination complex with the formula Ru(O2C5H7)3. O2C5H7 is the ligand called acetylacetonate. This compound exists as a dark violet solid that is soluble in most organic solvents.[2] It is used as a precursor to other compounds of ruthenium. PreparationIn 1914 tris(acetylacetonato)ruthenium (III) was first prepared by the reaction of ruthenium(III) chloride and acetylacetone in the presence of potassium bicarbonate.[3] Since then, alternative synthetic routes have been examined, but the original procedure remains useful with minor variations:[4] RuCl3•3H2O + MeCOCH2COMe → Ru(acac)3 + 3 HCl + 3 H2O Structure and propertiesThis compound has idealized D3 symmetry. Six oxygen atoms surround the central ruthenium atom in an octahedral arrangement. The average Ru-O bond length in Ru(acac)3 is 2.00 Å.[1] Because Ru(acac)3 is low spin, there is one unpaired d electron, causing this compound to be paramagnetic. Ru(acac)3 has a magnetic susceptibility, χM, of 3.032×10−6 cm3/mol with an effective magnetic moment, μeff, of 1.66 μB.[5] As a solution in DMF, the compound oxidizes at 0.593 and reduces at -1.223 V vs the ferrocene/ferrocenium couple.[6] Reduction of Ru(acac)3 in the presence of alkenes affords the related diolefin complexes. Typically, such reactions are conducted with zinc amalgam in moist tetrahydrofuran:[7] 2 Ru(acac)3 + 4 alkene + Zn → 2 Ru(acac)2(alkene)2 + Zn(acac)2 The resulting compounds are rare examples of metal-alkene complexes that reversibly sustain oxidation: Ru(acac)2(alkene)2 {{eqm}} [Ru(acac)2(alkene)2]+ + e− The complex has been resolved into individual enantiomers by separation of its adduct with dibenzoyltartaric acid.[8] References1. ^1 {{cite journal| title = Crystal and molecular structure of tris(acetylacetonato)ruthenium(III) | author = Chao, G.| journal = Acta Crystallographica B| year = 1973| volume = 29 | issue = 12| pages = 2845| doi = 10.1107/S0567740873007636| last2 = Sime| first2 = R. L.| last3 = Sime| first3 = R. J.}} 2. ^R.C. Mehrotra, R. Bohra, and D.P. Gaur "Metal β-Diketonates and Allied Derivatives", 1st ed.; Academic Press inc.: New York, 1978. {{ISBN|0-12-488150-5}}. 3. ^{{cite journal| title = Systematic chemical investigations: ruthenium, rhodium, palladium | author = Barbieri, G. A.| journal = Atti Accad, Lincei | year = 1914| volume = 23| issue = 1 | pages = 334–40| doi = }} 4. ^{{cite journal| title = Improved synthesis and reactivity of tris(acetylacetonato)ruthenium(III)| author = Gupta, A.| journal = Indian Journal of Chemistry. Section A, Inorganic, Bio-inorganic, Physical, Theoretical & Analytical Chemistry | year = 2000| volume = 39A| issue = 4| pages = 457| issn = 0376-4710 }} 5. ^{{cite journal| title = The absorption spectra and magnetic properties of the chelated compounds of Ru(III) with β-diketones | author = Grobelny, R.| journal = Journal of Inorganic and Nuclear Chemistry| year = 1966| volume = 28 | issue = 11 | pages = 2715–2718| doi = 10.1016/0022-1902(66)80398-6}} 6. ^{{cite journal| title = Alkyl Substituent Effects in the Redox Thermochemistry of Coordination Compounds: Oxidation and Reduction Energetics for Ruthenium Tris(β-diketonate) Complexes in Solution and the Gas Phase |author1=Paul Sharpe |author2=N. George Alameddin |author3=David E. Richardson | journal = Journal of the American Chemical Society| year = 1994| volume = 116| issue = 24| pages = 11098–11108| doi = 10.1021/ja00103a027}} 7. ^{{cite journal| title = The fragment bis(acetylacetonato)ruthenium: a meeting-point of coordination and organometallic chemistry | author = Bennett, M. A.| journal = Journal of Organometallic Chemistry| year = 2004| volume = 689 | issue = 24 | pages = 4463| doi = 10.1016/j.jorganchem.2004.07.027| last2 = Byrnes| first2 = Matthew J.| last3 = Kováčik| first3 = Ivan}} 8. ^{{cite journal|authors=Drake, A. F.; Gould, J. M.; Mason, S. F.; Rosini, C.; Woodley, F. J.|title=The optical resolution of tris(pentane-2,4-dionato)metal(III) complexes|journal=Polyhedron|year=1983|volume=2|issue=6|pages=537–538|doi=10.1016/S0277-5387(00)87108-9}} 2 : Ruthenium complexes|Acetylacetonate complexes |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。