Mommsenstrasse 13‚ 01062 Dresden‚ a Germany thomas.strassner@chemie.tu-dresden.de Received November 12‚ 2009 The mechanism and regioselectivity of the osmium-catalyzed aminohydroxylation of olefins was investigated in detail by density functional theory (B3LYP/6-31G(d)) calculations in the gas phase and with the CPCM-solvent model. A systematic variation of the catalyst system (OsO4 and various nitrogen sources) and the substrate’s electronic situation was conducted. Activation barriers could be
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(MEC 2700) LABORATORY MANUAL JULY 2007 Table of Contents Experiment 1: Heat Capacity of Gases Experiment 2: Thermal and Electrical Conductivity of Metals Experiment 3: Heat Pump Experiment 4: Heat Conduction Experiment 5: Free and Forced Convection Experiment 6: Thermal Radiation Experiment 1: Heat Capacity of Gases 1. BACKGROUND The first law of thermodynamics can be illustrated
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The 5th state of matter INTRODUCTION Ice is transformed to water at 0°C when the energy of its molecules (particles) increases. Water is similarly transformed to vapor at 100°C (Fig.1). Much stronger zigzag motion of the particles separates and ionizes hydrogen and oxygen i.e. plasma comes into existence (above 13 000 K). Do all bodies fit one of these four states of matter? The answer is: no‚ e.g. the solar corona does not! Fig. 1 The temperature scale. It starts at 0K. Is it infinite long
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If we apply the highly successful kinetic theory of gases to a metal‚ consider as a gas of electrons (in fact‚ back in 1900 Drude constructed the theory‚ hence the Drude theory of metals)‚ and assume that the electron velocity distribution is given by the Maxwell-Boltzmann distribution‚ what would the most probable speed‚ average speed‚ and rms speed for electrons at room temperature? Compare those to H2. The Drude theory was replaced by the Sommerfeld theory of metals‚ in which the Maxwell-Boltzmann
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13/12/2011 Course Title: General and Inorganic Chemistry TOPIC 3: CHEMICAL KINETICS Lecturer and contacts Mr. Vincent Madadi Department of Chemistry‚ University of Nairobi P. O. Box 30197-00100‚ Nairobi‚ Kenya Chemistry Dept. Rm 114 Tel: 4446138 ext 2185 Email: vmadadi@uonbi.ac.ke‚ madadivin2002@yahoo.com Website: http://www.uonbi.ac.ke/staff/vmadadi 12/13/2011 mov 1 Introduction • Kinetics is the study of rates of chemical reactions and the mechanisms by which they occur. • The reaction
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State Heat Transfer laboratory were to study the rates of heat transfer for different materials of varying sizes‚ to develop an understanding of the concepts of forced and free convection and to determine the heat transfer coefficients for several rods. These objectives were met by heating several rods and allowing them to cool through free convection in air‚ free convection in water and forced convection in water- while monitoring their change in temperature over change in time. Seven heat transfer
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Heat of Mixing: Ethanol and Water Abstract The temperature change when known amounts of water and ethanol were mixed was determined to see the enthalpy change in an isothermal and isobaric environment. Agreeable data was found compared to similar experiments. As the mole fraction increased of the solution so did the enthalpy until a certain limit of about 0.32. Since water’s structure and unique properties affect many aspects of a solution‚ the solutions enthalpy’s decreased at a certain time
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Term papers serve many purposes. For the student‚ a term paper provides an opportunity to explore a subject in greater depth than is possible during the course of a normal class. For the instructor‚ term papers are an indication of the student’s ability to research‚ organize‚ synthesize‚ and present information. In addition‚ the workplace has expressed a strong desire for employees‚ especially management employees who can provide clearly written documents on a variety of business issues. This paper
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The Spanish colonizers wanted to undermine the native oral tradition by substituting for it the story of the Passion of Christ. However‚ the native tradition survived and even flourished in areas inaccessible to the Spaniards. Also‚ the Spaniards were late in instituting a public educational system‚ which contributed to the survival of the existing folk literature. The church authorities adopted a policy of spreading the Church doctrines by communicating to the natives in their own language
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Energy is essential part of this world. Everything in the world runs on energy. It play‚s important part in development of a country. it is considered to be life line of any economy and most vital instrument of socioeconomic development of a country. There are many types of energy in this world which are obtained from different sources‚ But in Pakistan main sources of energy are (fossil fules‚ petroleum products‚ natural gas‚ coal‚ wind‚ nuclear‚ hydro power) Pakistan is
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