The molecular structures of Cr(acac)3 and Fe(acac)3 are quite different from that of Mn(acac)3. What are...

The molecular structures of Cr(acac)₃ and Fe(acac)₃ are quite different from that of Mn(acac)₃. What are these structures? What is the true structure of the so-called manganic acetate? Please explain thoroughly.

Solutions

Expert Solution

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.

Chromium(III) acetylacetonate, Cr(acac)₃, with the formula Cr(C₅H₇O₂)_3, is a typical octahedral complex containing three acac⁻ ligands. Like most such compounds, it is highly soluble in nonpolar organic solvents. This particular complex, which has a three unpaired electrons, is used as a spin relaxation agent to improve the sensitivity in quantitative carbon-13 NMR spectroscopy. The compound is prepared by the reaction of chromium(III) oxide with acetylacetone (Hacac):

Cr₂O₃ + 6 Hacac → 2 Cr(acac)₃ + 3 H₂O

Iron(III) acetylacetonate, Fe(acac)₃, is a red high-spin complex that is highly soluble in organic solvents. It is a configurationally labile, high-spin complex with five unpaired electrons. It is occasionally used as a catalyst precursor. Fe(acac)₃ is prepared by treating freshly precipitated Fe(OH)₃ with acetylacetone.

Fe(OH)₃ + 3 HC₅H₇O₂ → Fe(C₅H₇O₂)₃ + 3 H₂O

manganese(II) acetylacetonate, Mn(acac)_2, has been prepared by the comproportionation of the manganese(II) compound Mn(acac)₂ with potassium permanganate in the presence of additional acetylacetone.

The true Structure of Mn(acac)₃ is in the Image...................................

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

Create/draw a clear and organized FLOWCHART for K+, Fe+2 or Fe+3, Ni+2, Cr+3, NO3- and PO4-3....

Create/draw a clear and organized FLOWCHART for K+, Fe+2 or Fe+3, Ni+2, Cr+3, NO3- and PO4-3. Discuss observations for any precipitate/color changes, what you would see if it was or wasn't there, etc.

What solution and indicator should I use to determine a mixture of Mn and Fe?

Hoshin Planning. This is the Japanese way of planning. It is quite different from the American...

Hoshin Planning. This is the Japanese way of planning. It is quite different from the American way. What are some key differences in American vs Japanese planning? Discuss which may be more helpful in an organization.

Write the IUPAC name for each of the following compounds: a. [Cr(NH3)5Cl]2+ b. [W(NH3)3(H2O)3]2+ c. [Fe(H2O)6]3+

Answer about anionic ‘living’ polymerization: (a) What number-average molecular weight (Mn) polystyrene would be formed by...

Answer about anionic ‘living’ polymerization: (a) What number-average molecular weight (Mn) polystyrene would be formed by polymerization of 10 g styrene with 0.1 g of butyl lithium, under complete living polymer system? (b) Suggest three different ways to synthesize polystyrene-b-polybutadiene-b-polystyrene (SBS) tri-block copolymer with controlled block length.

what is the pH of 0.120 M Fe(NO_3)_3 (Ka of Fe^3+=3.00x10^-3)? Express your answer to two...

what is the pH of 0.120 M Fe(NO_3)_3 (Ka of Fe^3+=3.00x10^-3)? Express your answer to two decimal places.

The Classical School of economic thinking is quite different from the Keynesian School. The adherents believe...

The Classical School of economic thinking is quite different from the Keynesian School. The adherents believe in different roles for government and have different ideas about what drives an economy and even what an economy is and how it functions. Explain the two approaches for the following scenarios (be sure to think of monetary policy, fiscal policy, effects on the components of GDP, and incentives people may face): The economy is in a recession. The Federal Reserve Board has decided...

A mechanism through which a cell reponds to a nonpolar signaling molecule is quite different from...

A mechanism through which a cell reponds to a nonpolar signaling molecule is quite different from the way a cell reponds to a polar signaling molecule. for this question focus on the way a cell responds to a nonpolar signaling molecule such as a steroid hormone. summarize this process, starting with a steroid hormone in the bloodstream, up to the major response in the target, responding cell.

Write a balanced equation from each line notation: a) Ag(s)|Ag¹ᐩ(aq)||Cr³ᐩ(aq)|Cr(s) b)Pb(s)|Pb²(aq)||MnO₂(aq)|Mn²ᐩ(aq)|Pts)

What are the segmented structures (i.e., different prices to different buyers for different applications) that affect...

What are the segmented structures (i.e., different prices to different buyers for different applications) that affect strategic pricing? What roles do price-offer configuration, price metrics, price fences and gain-loss framing play in segmented structures, and how do they affect a pricing decision? Explain your answer.

Subjects