Question: Experiment: Preparation of bis(acetylacetonato)copper(II)
Objectives:
· To synthesise Bis (acetylacetanato) copper (II) compound by using Copper (II) Nitrate as starting material.
· To recognize the nature of the ligand
· To learn the technique of crystallization.
Questions:
1. Draw the structure of the complex.
2. Describe the structure by mentioning the ligating atoms of the ligand and its geometry.
3. Discuss the synthesis of the complex.
Answer: Introduction:
The four most common techniques for the bulk purification of crude organic compounds on a laboratory scale are recrystallization, distillation, extraction, and column chromatography. Numerous other methods are used somewhat less frequently (for example, sublimation) while still others are generally useful only for small scale applications (i.e., preparative gas chromatography). Of the methods useful in the purification of organic solids, recrystallization is usually the most convenient when it is feasible.
In chemistry, recrystallization is a procedure for purifying compounds. A typical situation is that a desired compound X is contaminated by a small amount of compound Y. A chemist can prepare a saturated solution of the mixture X+Y in a warm solvent and subsequently lower the temperature. The cost of this purification method is the loss of the part of compound X ...(short extract)
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- Subject: Chemistry
- Course: Chemistry
- Level: Degree
- Year: 2nd/3rd
- Mark: 65%
- Words: 3157
- Date submitted: April 16, 2009
- Date written: Not available
- References: Yes
- Document type: Essay*
- Essay ID: 1407
