Cn Banwell Fundamentals Of Molecular Spectroscopy

[Anjali Reyome]

Fornireagli studenti una introduzione ai principi chimico fisici della spettroscopia molecolare e descrivere i principi di funzionamento e le parti tecniche dei quali sono composti i principali spettrofotometri.

Saper descrivere in una relazione tecnica in modo chiaro e sintetico ed esporre oralmente con propriet di linguaggio gli obiettivi, il procedimento ed i risultati delle analisi ed elaborazioni effettuate.

Descrizione e interpretazione degli spettri rotazionali, vibrazionali e Raman mediante meccanica quantistica attraverso modelli semplici. Raccolta ed analisi di spettri vibrazionali, rotazioni e di emissione e Raman di soluzioni e/o gas durante la parte di esercitazioni in laboratorio didattico

L'esame consiste in una prova orale preceduta da una consegna di una relazione scritta sulle esperienze di laboratorio. Per la stesura della relazione indicato nella pagina elearning un format da seguire. La relazione pu essere una per gruppo di lavoro o singola e va consegnata almeno una settimana prima della data di appello al docente del corso. La relazione verr valutata in trentesimi e peser per un terzo nel voto complessivo.

Communication skills

Knowing how to describe in a technical report in a clear and concise way and orally present the objectives, the procedure and the results of the processing carried out with language properties.

Ability to learn

Being able to apply the acquired knowledge to different contexts from those presented during the course, and to distinguish between an analytical use and a chemical-physical use of spectroscopy.

Rotational spectra. Vibrational spectra. Roto-vibrational spectra: roto-vibrational states in the Born-Oppenheimer approximation. Quantitative computation of structural parameters. Raman spectra. Electronic molecular spectra. Selection rules and transition probability. Different spectroscopic experiments and data elaborations will be carried out with a particular attention to technical aspects of instruments used. The arguments of the experiments are the following: determination of bond length of molecules by rotovibrational spectrum analysis collected by infrared (IR) spectroscopy; analysis of absorption spectra in UV-VIS region to determine electronic transitions of molecules; use of Raman spectroscopy to study vibrational signatures of molecules.

The course includes 4 CFU of lectures and 2 CFU exercises in the laboratory. In the laboratory students are assigned, divided into small groups, the task of collecting and processing spectra with different spectrophotometers using the methodologies presented in the theoretical lessons. Methods are also proposed to produce a clear and accurate elaborate in the process

The exam consists of an oral exam preceded by the delivery of a written report on laboratory experiences. For the preparation of the report, guidelines will be provided to be followed. The report can be one per work group or single and must be delivered in paper form at least one week before the date of the oral exam. The report will be evaluated in thirtieths and will weight for one third of the final mark.

A written partial exam (with open questions) is scheduled at the end of the lectures, it will regard only the topics covered during the classroom lectures. Al the students that pass this partial test with a grade > 22/30 will be subsequently probed at the oral exam only with questions on the part of the course related to the laboratory experiences and on the principles of operation of the spectrophotometers. Also in this case, the evaluation of the laboratory report will weight for one third of the final mark.

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