Synthesis and Characterization of the Polyhalogen Complex CsICl2 - Lab Report Example

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As a means of facilitating comprehension of polyhalogens complexes, practical experiments involving synthesis and characterization of these compounds…
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Synthesis and Characterization of the Polyhalogen Complex CsICl2
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Download file to see previous pages Theoretically, compounds absorb electromagnetic radiations at distinct frequencies depending on the inter-atomic bonds involved (Gibes 269). With the use of infrared radiations, a spectrum indicating the frequencies of absorptions can be produced. Subsequently, analyses of the spectral peaks enable determination and verification of a compound’s structure. Subsequent sections of this report contain procedural steps used in synthesis and IR determination of Cs [ICl2] complex.
Prior to commencement of the lab exercise, appropriate safety measures were taken into consideration. These measures included the use of gloves in handling poisonous elements, specifically iodine. In addition, any stains of iodine on laboratory benches and laboratory equipment were cleaned to avoid contact of the poisonous element with skin and mucous membranes (Gibes 271). Subsequently, the following Cs [ICl2] synthesis procedures were performed;
The Cs chloride-iodine mixture turned from yellow to reddish upon heating in the 90-95oC water bath. Upon dispensation of chlorine into the mixture, color changed back from reddish to yellow and finally to white when the complex was washed and dried (Gibes 271).
The infrared spectrum of Cs ICl2 indicates presence of a single peak at a wavelength of 231 cm-1. Theoretically, this absorption wavelength is associated with the corresponding halogen; iodine. In this context, a single point of absorption in a tri-atomic compound indicates the presence of a bending vibration with an asymmetrical structure (Smith 25). In this case, infrared spectrum of ICl2- provides a characteristic vibration peak similar to that exhibited by trigonal-planar molecular structures.
In conclusion, the IR spectrum of Cs ICl2 verifies that the compound has a trigonal-planar molecular structure. The single peak in the infrared spectrum ascertains that the ICl2 ...Download file to see next pagesRead More
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