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CH20177: Organic chemistry 4 for visiting students

Follow this link for further information on academic years Academic Year: 2012/3
Follow this link for further information on owning departmentsOwning Department/School: Department of Chemistry
Follow this link for further information on credits Credits: 6
Follow this link for further information on unit levels Level: Intermediate (FHEQ level 5)
Follow this link for further information on period slots Period: Semester 2
Follow this link for further information on unit assessment Assessment: EX 100%
Follow this link for further information on supplementary assessment Supplementary Assessment: Like-for-like reassessment (where allowed by programme regulations)
Follow this link for further information on unit rules Requisites: In taking this unit you cannot take CH20149 and take CH20150
Follow this link for further information on unit content Description: Aims:
To provide the student with a working knowledge of important classes of organic transformations and illustrate how the rate and mechanism of a chemical reaction can be understood in terms of the chemical structure of molecules. To show how experimental kinetic data may be used to elucidate chemical reaction mechanisms.

Learning Outcomes:
After studying this Unit, students should be able to:
* Describe the synthetic chemistry of carbocations, anions and radical species and describe some of the mechanisms involved in their reaction.
* analyse experimental rate data for first- and second-order reactions;
* describe how the involvement of a reaction intermediate may be deduced;
* discuss the stereochemistry of aliphatic nucleophilic substitution;
* describe the effects of added ions upon SN1 substitutions;
* discuss the role of ion pairs in unimolecular solvolyses;
* determine the pH of a buffer solution;
* describe the effect of pH on the rates of acid or base catalysed reactions;
* distinguish general catalysis from specific catalysis by acids or bases;
* describe the features of nucleophilic catalysis;
* rationalise the reactivity of molecules using stereoelectronic principles.

Problem solving (T, F, A), Data Analysis (T, F, A), Independent working (F), Group working (F).

Aliphatic nucleophilic substitution: 1st & 2nd order kinetics, competing reactions; Deduction of reaction mechanism, evidence for intermediates; Stereochemical evidence for the SN2 mechanism; Evidence for the SN1 mechanism: consecutive reactions, common-ion effect, solvolysis, ion pairs; Acid/base catalysis: solvent levelling, buffers, specific & general catalysis; Nucleophilic catalysis. Review of basic stereochemistry principles. The importance of stereoselective synthesis. Diastereomers and diastereoselective synthesis. Conformation of cyclohexanes - the importance of stereochemistry to reactivity - carbohydrates. Stereochemistry and mechanism. Frontier Molecular Orbital Theory and stereoelectronic effects. Aspects of the chemistry of carbocations, carbanions, radicals, carbenes, nitrenes, and arynes.
Follow this link for further information on programme availabilityProgramme availability:

CH20177 is Optional on the following programmes:

Department of Chemistry
  • USCH-AFT01 : Visiting student in Department of Chemistry (Full-time) - Year 1

* This unit catalogue is applicable for the 2012/13 academic year only. Students continuing their studies into 2013/14 and beyond should not assume that this unit will be available in future years in the format displayed here for 2012/13.
* Programmes and units are subject to change at any time, in accordance with normal University procedures.
* Availability of units will be subject to constraints such as staff availability, minimum and maximum group sizes, and timetabling factors as well as a student's ability to meet any pre-requisite rules.