How are the isomers of tris(acetylacetonato) chromium(III)?

Thread starter mimi88
Start date Oct 10, 2018
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Chemical Chemistry Isomers

In summary, the isomers of tris(acetylacetonato) chromium(III) are the meridional and facial isomers. The meridional isomer has the three acetylacetonate ligands arranged in a meridional plane, while the facial isomer has the ligands arranged in a facial plane. The meridional isomer has a trigonal bipyramidal molecular geometry, and the facial isomer exhibits optical activity due to its asymmetric arrangement of ligands. Both isomers can be synthesized by reacting chromium(III) chloride with excess acetylacetone in the presence of a base, followed by purification.

Oct 10, 2018

mimi88

Homework Statement

How to draw it?
Can someone tell me the electronic configuration of the chromium atom in tris( acetylaceato)chromium( III) please

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The Attempt at a Solution

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Oct 10, 2018

mimi88

is the electronic configuration of it d^3(t2g^3eg^0? And has two isomers?

Oct 10, 2018

mjc123

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Homework Helper

I believe so. What kind of isomerism is involved?

Related to How are the isomers of tris(acetylacetonato) chromium(III)?

1. What are the isomers of tris(acetylacetonato) chromium(III)?

The isomers of tris(acetylacetonato) chromium(III) are the meridional and facial isomers.

2. How do the meridional and facial isomers differ?

The meridional isomer has the three acetylacetonate ligands arranged in a meridional plane, while the facial isomer has the ligands arranged in a facial plane.

3. What is the molecular geometry of the meridional isomer?

The meridional isomer has a trigonal bipyramidal molecular geometry, with the three acetylacetonate ligands in the equatorial positions and three other ligands in the axial positions.

4. How does the facial isomer exhibit optical activity?

The facial isomer exhibits optical activity because the three acetylacetonate ligands are arranged asymmetrically around the central chromium atom, causing a difference in the direction of rotation of polarized light.

5. How are the isomers of tris(acetylacetonato) chromium(III) synthesized?

The isomers of tris(acetylacetonato) chromium(III) can be synthesized by reacting chromium(III) chloride with excess acetylacetone in the presence of a base, followed by purification to isolate the desired isomer.