Topic 15 specification content - A
... I can explain that transition metal ions can be identified by their colour, that this colour arises when some of the wavelengths of visible light are absorbed and the remaining wavelengths of light are transmitted or reflected, that d electrons move from the ground state to an excited state when lig ...
... I can explain that transition metal ions can be identified by their colour, that this colour arises when some of the wavelengths of visible light are absorbed and the remaining wavelengths of light are transmitted or reflected, that d electrons move from the ground state to an excited state when lig ...
l - CMatthews
... bonding percent for each of the following: NH3, CH4, BeF2, SO22- and MgO. 2. Draw the energy level diagrams, and write both electron configurations for oxygen atom, nickel 3+ ion, and ...
... bonding percent for each of the following: NH3, CH4, BeF2, SO22- and MgO. 2. Draw the energy level diagrams, and write both electron configurations for oxygen atom, nickel 3+ ion, and ...
Oxidation and Reduction Reactions
... hydrogen to a carbonyl (using NaBH4 or LiAlH4 as the source of nucleophilic hydrogen). This was a chemoselective reaction – in other words, the reducing agent only reduced one functional group (the carbonyl) and left others alone (e.g. alkenes). If we want to reduce an alkene or alkyne, we need to u ...
... hydrogen to a carbonyl (using NaBH4 or LiAlH4 as the source of nucleophilic hydrogen). This was a chemoselective reaction – in other words, the reducing agent only reduced one functional group (the carbonyl) and left others alone (e.g. alkenes). If we want to reduce an alkene or alkyne, we need to u ...
Hydrogenation of Amino Acid Mixtures to Amino Alcohols
... interactions between the substrates and catalyst, and shed light onto the reaction mechanism. The understanding gained from this model system will aid in design of hydrogenation processes of more complex biorenewable feedstocks. Materials and Methods Aqueous catalytic hydrogenations were carried out ...
... interactions between the substrates and catalyst, and shed light onto the reaction mechanism. The understanding gained from this model system will aid in design of hydrogenation processes of more complex biorenewable feedstocks. Materials and Methods Aqueous catalytic hydrogenations were carried out ...
Lecture 1: Key Concepts in Stereoselective Synthesis
... Olefins with no coordinating functionalities, especially tri- and tetrasubstituted, have been identified as the most difficult substrates for asymmetric hydrogenation. These olefins are particularly difficult to hydrogenate due to the absence of the polar group which is required for Rh or Ru catalys ...
... Olefins with no coordinating functionalities, especially tri- and tetrasubstituted, have been identified as the most difficult substrates for asymmetric hydrogenation. These olefins are particularly difficult to hydrogenate due to the absence of the polar group which is required for Rh or Ru catalys ...
"Introduction" Kinetics in Process Chemistry: Case Studies Baran Group Meeting Mike DeMartino
... acids or weakly nucleophilic amines often result in poor yields, or unacceptably long reaction times when done on-scale. In order to circumvent this problem, a catalyst is often used that can activate the carbonyl even more than the acyl imidazole. HOBt is one such catalyst. The potential for proces ...
... acids or weakly nucleophilic amines often result in poor yields, or unacceptably long reaction times when done on-scale. In order to circumvent this problem, a catalyst is often used that can activate the carbonyl even more than the acyl imidazole. HOBt is one such catalyst. The potential for proces ...
Lecture 14a - UCLA Chemistry and Biochemistry
... Chalcone Infrared spectrum Shift of carbonyl stretching frequency due to increased conjugation (n(C=O): 1640-1650 cm-1) Presence of alkene function (n(C=C): ~1600 cm-1, oop trans: ~980 cm-1) Presence of “ferrocene modes”: 1102 cm-1, 820 cm-1, 480 cm-1 1H-NMR spectrum Presence of alken ...
... Chalcone Infrared spectrum Shift of carbonyl stretching frequency due to increased conjugation (n(C=O): 1640-1650 cm-1) Presence of alkene function (n(C=C): ~1600 cm-1, oop trans: ~980 cm-1) Presence of “ferrocene modes”: 1102 cm-1, 820 cm-1, 480 cm-1 1H-NMR spectrum Presence of alken ...
rules for predicting products of chemical reactions
... Not all double replacement reactions will occur In order for a double replacement reaction to take place: - Both of the reactants must be soluble in water - If a compound contains at least one of the ions that is proven soluble, then the compound will be at least moderately soluble - One product mus ...
... Not all double replacement reactions will occur In order for a double replacement reaction to take place: - Both of the reactants must be soluble in water - If a compound contains at least one of the ions that is proven soluble, then the compound will be at least moderately soluble - One product mus ...
Olefin polymerization
... Removal of the bridge between the indenyl ligands allows rotation about the metal ligand bond and formation of C2- and meso- isomers, which have similar energies. The phenyl substituents were incorporated to slow down the ligand rotation. The result of this was production of an isotactic-atactic ste ...
... Removal of the bridge between the indenyl ligands allows rotation about the metal ligand bond and formation of C2- and meso- isomers, which have similar energies. The phenyl substituents were incorporated to slow down the ligand rotation. The result of this was production of an isotactic-atactic ste ...
Q1. Give I.U.P.A..C Name of the following Organic Compound. 1 CH
... Q9. How many ml of 0.1 M HCL are required to react completely with one gram mixture of Na2CO3 and NaHCO3 Containing Equimolar amounts of both ? ...
... Q9. How many ml of 0.1 M HCL are required to react completely with one gram mixture of Na2CO3 and NaHCO3 Containing Equimolar amounts of both ? ...
Honors Chemistry- Chapter 16 Homework Packet Reaction Energy
... starts at a temperature of 45°C, what will the final temperature of the copper metal be? (Cp (Cu) = 0.385 J/g°C). ...
... starts at a temperature of 45°C, what will the final temperature of the copper metal be? (Cp (Cu) = 0.385 J/g°C). ...
10 TEST 2 (of 3)
... Complete the following using the words ENDOTHERMIC, ENTHALPY, EXOTHERMIC (a) The heat evolved in a chemical reaction at constant pressure is called the change in __________________ for the reaction (ΔH). In an ______________ reaction ΔH is positive, in an _______________ reaction ΔH Is negative. ...
... Complete the following using the words ENDOTHERMIC, ENTHALPY, EXOTHERMIC (a) The heat evolved in a chemical reaction at constant pressure is called the change in __________________ for the reaction (ΔH). In an ______________ reaction ΔH is positive, in an _______________ reaction ΔH Is negative. ...
Organic Chemistry HW PSI Chemistry
... 35) Which molecule is water-soluble because it has a hydroxyl functional group? 36) Which molecule is an alcohol? 37) Alcohols are hydrocarbon derivatives in which one or more hydrogens have been replaced by a hydroxyl functional group. __________ is the general formula of an alcohol. A) R-CO-H B) ...
... 35) Which molecule is water-soluble because it has a hydroxyl functional group? 36) Which molecule is an alcohol? 37) Alcohols are hydrocarbon derivatives in which one or more hydrogens have been replaced by a hydroxyl functional group. __________ is the general formula of an alcohol. A) R-CO-H B) ...
CfE Higher Chemistry Homework Unit 2: Natures Chemistry Soaps
... 4. A student carried out four tests on ethanol and ethanoic acids to compare the properties of the two homologous series, alcohols and carboxylic acids. a. Choose one test in which ethanol and ethanoic acid will give different results and state the results. b. Choose one test in which ethanol and et ...
... 4. A student carried out four tests on ethanol and ethanoic acids to compare the properties of the two homologous series, alcohols and carboxylic acids. a. Choose one test in which ethanol and ethanoic acid will give different results and state the results. b. Choose one test in which ethanol and et ...
naming using more functional groups
... • analysis of this showed that all six C-C bonds had identical lengths (140 pm) – this allows the molecule to be symmetrical instead of the different lengths associated with singe (154 pm) and double (134 pm) ...
... • analysis of this showed that all six C-C bonds had identical lengths (140 pm) – this allows the molecule to be symmetrical instead of the different lengths associated with singe (154 pm) and double (134 pm) ...
Chapter 18 Notes (Word), Part II File
... Used as a base for perfumes, creams, lotions, etc. 1,2-ethandiol (common: ethylene glycol) Used mainly in antifreeze 1,2,3-propantriol (common: glycerol) Used also as base in soaps, cosmetics, foods, pharmaceuticals…look for it. ...
... Used as a base for perfumes, creams, lotions, etc. 1,2-ethandiol (common: ethylene glycol) Used mainly in antifreeze 1,2,3-propantriol (common: glycerol) Used also as base in soaps, cosmetics, foods, pharmaceuticals…look for it. ...
Chapter One: Molecular Structure
... Predict the products of reactions involving ethers and epoxides with common reagents. Predict the likelihood of carbon skeleton rearrangement under a given set of conditions. Predict the stereochemistry and optical activity of a product from an understanding of its mechanism of formation. Re ...
... Predict the products of reactions involving ethers and epoxides with common reagents. Predict the likelihood of carbon skeleton rearrangement under a given set of conditions. Predict the stereochemistry and optical activity of a product from an understanding of its mechanism of formation. Re ...
Polymers
... Another famous type of catalyst is a Ziegler-Natta catalyst (named after the scientists who developed it). Such catalysts are based on the compound TiCl4. ...
... Another famous type of catalyst is a Ziegler-Natta catalyst (named after the scientists who developed it). Such catalysts are based on the compound TiCl4. ...
Hydroformylation
Hydroformylation, also known as oxo synthesis or oxo process, is an important homogeneously catalyzed industrial process for the production of aldehydes from alkenes. This chemical reaction entails the addition of a formyl group (CHO) and a hydrogen atom to a carbon-carbon double bond. This process has undergone continuous growth since its invention in 1938: Production capacity reached 6.6×106 tons in 1995. It is important because the resulting aldehydes are easily converted into many secondary products. For example, the resulting aldehydes are hydrogenated to alcohols that are converted to plasticizers or detergents. Hydroformylation is also used in specialty chemicals, relevant to the organic synthesis of fragrances and natural products. The development of hydroformylation, which originated within the German coal-based industry, is considered one of the premier achievements of 20th-century industrial chemistry.The process typically entails treatment of an alkene with high pressures (between 10 to 100 atmospheres) of carbon monoxide and hydrogen at temperatures between 40 and 200 °C. Transition metal catalysts are required.