Complexes of Ethylenediaminetetracarboxylate Ligands
... complexes. The relative energies of the various structural forms of M-edta-type complexes would be of use to experimental chemists. However, the accurate calculation of the electronic structure of transition-metal complexes remains a challenging task for quantum chemistry. Fortunately, density funct ...
... complexes. The relative energies of the various structural forms of M-edta-type complexes would be of use to experimental chemists. However, the accurate calculation of the electronic structure of transition-metal complexes remains a challenging task for quantum chemistry. Fortunately, density funct ...
Reductive Elimination
... Octahedral d6 complexes of Pt(IV), Pd(IV), Ir(III), and Rh(III) tend to undergo reductive elimination readily but often with initial loss of a ligand to generate a 5-coordinate intermediate, a much more reactive species than the starting 6-coordinate complex. ...
... Octahedral d6 complexes of Pt(IV), Pd(IV), Ir(III), and Rh(III) tend to undergo reductive elimination readily but often with initial loss of a ligand to generate a 5-coordinate intermediate, a much more reactive species than the starting 6-coordinate complex. ...
Design of Nanostructured Catalysts for H2 Production
... gases and sequestrating it into permanent deposits such as depleted gas wells or other stable geological formations [2]. Another promising approach is based on the conversion of CO2 into more valuable chemical products. Up to now, few industrial processes utilize it as a raw material (see § 1.3). It ...
... gases and sequestrating it into permanent deposits such as depleted gas wells or other stable geological formations [2]. Another promising approach is based on the conversion of CO2 into more valuable chemical products. Up to now, few industrial processes utilize it as a raw material (see § 1.3). It ...
Activation of Alcohols Toward Nucleophilic Substitution: Conversion
... alcohols are converted to saturated alkyl halides.6 Because the use of HCl shows poor results for the conversion of an alcohol to an alkyl chloride, a catalyst such as the zinc used in the Lucas reagent is required. This reaction was improved by adding zinc chloride and had the advantage of milder c ...
... alcohols are converted to saturated alkyl halides.6 Because the use of HCl shows poor results for the conversion of an alcohol to an alkyl chloride, a catalyst such as the zinc used in the Lucas reagent is required. This reaction was improved by adding zinc chloride and had the advantage of milder c ...
Graphene-Catalyzed Direct Friedel–Crafts Alkylation Reactions
... functional groups on the GO surface during the alkylation reactions (Figure SI-3).49 Compared to the GO starting material, the intensity of signals at 1225, 1204, and 1730 cm−1, attributed to C−O (C−OH/C−O−C, hydroxyl/ epoxide) and CO (carbonyl groups), respectively, has significantly decreased. Mor ...
... functional groups on the GO surface during the alkylation reactions (Figure SI-3).49 Compared to the GO starting material, the intensity of signals at 1225, 1204, and 1730 cm−1, attributed to C−O (C−OH/C−O−C, hydroxyl/ epoxide) and CO (carbonyl groups), respectively, has significantly decreased. Mor ...
CHEMISTRY 211 FINAL EXAM Wed., December 4, 2002 Name
... briefly, but clearly, what type of reaction is taking place in each case and why this would lead to the ...
... briefly, but clearly, what type of reaction is taking place in each case and why this would lead to the ...
Chapter 5 - DORAS
... hetero- coupled products from the reaction. Consequently we expect to obtain three dinuclear products from the reaction mixture as shown in figure 5.2. A second difference is the use of different organohalides as the coupling partners. In Suzuki reactions coupling takes place between a boronic acid ...
... hetero- coupled products from the reaction. Consequently we expect to obtain three dinuclear products from the reaction mixture as shown in figure 5.2. A second difference is the use of different organohalides as the coupling partners. In Suzuki reactions coupling takes place between a boronic acid ...
PDF - TU Darmstadt Chemie
... pentuloses (C5 H10 O5 ). Subdivisions are made according to functional groups which may also be present, for example, aminohexoses (C6 H13 O5 N), deoxyhexoses (C6 H12 O5 ), and hexuronic acids (C6 H10 O7 ). Monosaccharides with fewer (trioses, tetroses) or more carbon atoms (heptoses, octoses, etc.) ...
... pentuloses (C5 H10 O5 ). Subdivisions are made according to functional groups which may also be present, for example, aminohexoses (C6 H13 O5 N), deoxyhexoses (C6 H12 O5 ), and hexuronic acids (C6 H10 O7 ). Monosaccharides with fewer (trioses, tetroses) or more carbon atoms (heptoses, octoses, etc.) ...
Aldehydes and ketones
... – Aldehydes have a H-atom or a carbon substituent (alkyl, cycloalkyl, aromatic) bound to a CHO group (carbonyl group bound to a H-atom): General formula for aldehyde: ...
... – Aldehydes have a H-atom or a carbon substituent (alkyl, cycloalkyl, aromatic) bound to a CHO group (carbonyl group bound to a H-atom): General formula for aldehyde: ...
Acidity of Alcohols
... the lower alcohols miscible with water. As the R group becomes larger, the solubility of alcohols in water ...
... the lower alcohols miscible with water. As the R group becomes larger, the solubility of alcohols in water ...
Amines
... Typical reagents : LiAlH4 / ether solvent, followed by aqueous work-up. Note that this reaction is different to that of other C=O compounds which reduce to alcohols (for example esters) The nature of the amine obtained depends on the substituents present on the original amide. Look at the N substitu ...
... Typical reagents : LiAlH4 / ether solvent, followed by aqueous work-up. Note that this reaction is different to that of other C=O compounds which reduce to alcohols (for example esters) The nature of the amine obtained depends on the substituents present on the original amide. Look at the N substitu ...
Chapter 16 Controlling the yield of reactions
... The volume of the container was increased at constant temperature and a new equilbrium was established. Predict how each of the following quantities would change at the new equilibrium compared with the initial equilibrium: a concentration of NO2 b mass of NO2 A12. ...
... The volume of the container was increased at constant temperature and a new equilbrium was established. Predict how each of the following quantities would change at the new equilibrium compared with the initial equilibrium: a concentration of NO2 b mass of NO2 A12. ...
Ring-closing metathesis
Ring-closing metathesis, or RCM, is a widely used variation of olefin metathesis in organic chemistry for the synthesis of various unsaturated rings via the intramolecular metathesis of two terminal alkenes, which forms the cycloalkene as the E- or Z- isomers and volatile ethylene.The most commonly synthesized ring sizes are between 5-7 atoms; however, reported syntheses include 45- up to 90- membered macroheterocycles. These reactions are metal-catalyzed and proceed through a metallacyclobutane intermediate. It was first published by Dider Villemin in 1980 describing the synthesis of an Exaltolide precursor, and later become popularized by Robert H. Grubbs and Richard R. Schrock, who shared the Nobel Prize in Chemistry, along with Yves Chauvin, in 2005 for their combined work in olefin metathesis. RCM is a favorite among organic chemists due to its synthetic utility in the formation of rings, which were previously difficult to access efficiently, and broad substrate scope. Since the only major by-product is ethylene, these reactions may also be considered atom economic, an increasingly important concern in the development of green chemistry.There are several reviews published on ring-closing metathesis.