Metal-Metal Bonds
... 224 pm. It was the first complex found to have a quadruple bond. Look at other complexes that have metal-metal bonds. ...
... 224 pm. It was the first complex found to have a quadruple bond. Look at other complexes that have metal-metal bonds. ...
Chiral-Auxiliary-Mediated Asymmetric Synthesis of Tris
... As molecular recognition involving metal complexes continues to gain importance, for example, in the design of nucleic acid probes or enzyme inhibitors, so does the demand for efficient syntheses of enantiopure chiral-at-metal coordination compounds. However, compared with the availability of highly ...
... As molecular recognition involving metal complexes continues to gain importance, for example, in the design of nucleic acid probes or enzyme inhibitors, so does the demand for efficient syntheses of enantiopure chiral-at-metal coordination compounds. However, compared with the availability of highly ...
Pre-lab Questions - HCC Learning Web
... ion from hydrochloric acid (HCl), forming an alkyl chloride, as shown in the following equation. ...
... ion from hydrochloric acid (HCl), forming an alkyl chloride, as shown in the following equation. ...
Synopsis
... diastereomeric sulfilimines behave in a stereoconvergent fashion and afford products with the same configuration at carbon. An efficient route to αhydroxy-β-amino acid derivatives AHDA and AHPBA was developed using a common advanced intermediate. The methodology provides aminoalcohol derivatives wit ...
... diastereomeric sulfilimines behave in a stereoconvergent fashion and afford products with the same configuration at carbon. An efficient route to αhydroxy-β-amino acid derivatives AHDA and AHPBA was developed using a common advanced intermediate. The methodology provides aminoalcohol derivatives wit ...
Theoretical Competition - Austrian Chemistry Olympiad
... 2.2. Give the formula and the name of complex K1. 2.3. Draw the occupation of the d-orbitals for K1 and verify it by comparing the calculated and the measured magnetic moment. 2.4. Calculate the ligand energy splitting ∆ (in kJ/mol) for K1. 2.5. In case of the same central ion and the ligands H2O, C ...
... 2.2. Give the formula and the name of complex K1. 2.3. Draw the occupation of the d-orbitals for K1 and verify it by comparing the calculated and the measured magnetic moment. 2.4. Calculate the ligand energy splitting ∆ (in kJ/mol) for K1. 2.5. In case of the same central ion and the ligands H2O, C ...
Reaction of amino acids with exo-3,6-epoxy-1,2,3,6
... particular, N-maleoylamino acids such as the glycine derivative 1 are difficult to prepare and largely rely on methods described in the mid-1970s by Keller and Rudinger4 and by Rich and coworkers.5 O N ...
... particular, N-maleoylamino acids such as the glycine derivative 1 are difficult to prepare and largely rely on methods described in the mid-1970s by Keller and Rudinger4 and by Rich and coworkers.5 O N ...
chemical reaction
... • 3. Describe the difference between single- and doubledisplacement reactions. • 4. Write the balanced equation in which potassium iodide, KI, reacts with chlorine to form potassium chloride, KCl, and ...
... • 3. Describe the difference between single- and doubledisplacement reactions. • 4. Write the balanced equation in which potassium iodide, KI, reacts with chlorine to form potassium chloride, KCl, and ...
Enantioselective Synthesis of Cyclic Ethers through a Vanadium
... Unfortunately, the dioxacyclic compound was obtained as a mixture of two diastereoisomers (44 % yield, d.r. = 1:1; CHCl3, TBHP (2.2 equiv), 40 8C, 48 h), but tandem reaction conditions using 1.1 equivalents of TBHP gave 8 with high diastereoselectivity (d.r. = > 95:5) and in Table 1: Vanadium-cataly ...
... Unfortunately, the dioxacyclic compound was obtained as a mixture of two diastereoisomers (44 % yield, d.r. = 1:1; CHCl3, TBHP (2.2 equiv), 40 8C, 48 h), but tandem reaction conditions using 1.1 equivalents of TBHP gave 8 with high diastereoselectivity (d.r. = > 95:5) and in Table 1: Vanadium-cataly ...
functional groups
... bonds by loosing or gaining 4 electrons. – Instead, carbon usually completes its valence shell by sharing electrons with other atoms in four covalent bonds. – This tetravalence by carbon makes large, complex molecules possible. Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cumming ...
... bonds by loosing or gaining 4 electrons. – Instead, carbon usually completes its valence shell by sharing electrons with other atoms in four covalent bonds. – This tetravalence by carbon makes large, complex molecules possible. Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cumming ...
Practice problem chap3 1. The atomic mass of 35Cl (75.53%) and
... the average atomic mass in amu. 2. What is the mass percent (%) for O in SO2? (a) 38.09 (b) 45.41 (c) 50.00 (d) 53.86 (e) 56.43 3. How many molecules of ethane (C2H6) are present in 0.334g of C2H6?How many H atoms? 4. Chemical analysis shows the composition of a compound containing carbon and hydrog ...
... the average atomic mass in amu. 2. What is the mass percent (%) for O in SO2? (a) 38.09 (b) 45.41 (c) 50.00 (d) 53.86 (e) 56.43 3. How many molecules of ethane (C2H6) are present in 0.334g of C2H6?How many H atoms? 4. Chemical analysis shows the composition of a compound containing carbon and hydrog ...
Chapter-1 ALCOHOLS
... Ethylene glycol is produced from ethylene (ethene), via the intermediate ethylene oxide. Ethylene oxide reacts with water to produce ethylene glycol according to the chemical equationC2H4O + H2O → HOCH2CH2OH This reaction can be catalyzed by ...
... Ethylene glycol is produced from ethylene (ethene), via the intermediate ethylene oxide. Ethylene oxide reacts with water to produce ethylene glycol according to the chemical equationC2H4O + H2O → HOCH2CH2OH This reaction can be catalyzed by ...
Ch 16 Electrophilic Aromatic Substitution
... - A substituent already on the ring will affect both the reactivity and orientation of the next substitution reaction. - Substituents that increase reactivity are called activators. Substituents that decrease reactivity are called deactivators. - Substituents that cause 1,2 and 1,4 disubstituted pro ...
... - A substituent already on the ring will affect both the reactivity and orientation of the next substitution reaction. - Substituents that increase reactivity are called activators. Substituents that decrease reactivity are called deactivators. - Substituents that cause 1,2 and 1,4 disubstituted pro ...
Unit 10 PRACTICE Test with Answers
... 14. Identify two indicators from Reference Table M that are yellow in solutions with a pH of 5.5. any two of the following: ...
... 14. Identify two indicators from Reference Table M that are yellow in solutions with a pH of 5.5. any two of the following: ...
Physical Properties OF Aldehydes And Ketones
... These attractions although important, are not as strong as interactions due to hydrogen bonding as a result, the boiling points of aldehydes and ketones are higher than those of non polar alkanes, but lower than those of alcohols whose molecules are connected together by H-bonds. ...
... These attractions although important, are not as strong as interactions due to hydrogen bonding as a result, the boiling points of aldehydes and ketones are higher than those of non polar alkanes, but lower than those of alcohols whose molecules are connected together by H-bonds. ...
Chapter 12 Review “Stoichiometry”
... reason why actual yield is less than theoretical yield: a) impure reactant present, or b) conservation of mass? What is conserved in this reaction: H2(g) + Cl2(g) → 2HCl(g)? In any chemical reaction, the quantities that are preserved are __. ...
... reason why actual yield is less than theoretical yield: a) impure reactant present, or b) conservation of mass? What is conserved in this reaction: H2(g) + Cl2(g) → 2HCl(g)? In any chemical reaction, the quantities that are preserved are __. ...
Chapter 12 Review “Stoichiometry”
... reason why actual yield is less than theoretical yield: a) impure reactant present, or b) conservation of mass? What is conserved in this reaction: H2(g) + Cl2(g) → 2HCl(g)? In any chemical reaction, the quantities that are preserved are __. ...
... reason why actual yield is less than theoretical yield: a) impure reactant present, or b) conservation of mass? What is conserved in this reaction: H2(g) + Cl2(g) → 2HCl(g)? In any chemical reaction, the quantities that are preserved are __. ...
2014-15 FINAL REVIEW Nomenclature: Chemical Name Chemical
... 5. 100.0 mL of 0.200M aqueous potassium hydroxide is mixed with 100.0mL of 0.200M aqueous magnesium nitrate. What mass of magnesium hydroxide is formed? What is/are the concentration of any ions remaining in the solution? Heat of Reaction: 1. Hg has a specific heat of 0.139 J/goC. How much heat is ...
... 5. 100.0 mL of 0.200M aqueous potassium hydroxide is mixed with 100.0mL of 0.200M aqueous magnesium nitrate. What mass of magnesium hydroxide is formed? What is/are the concentration of any ions remaining in the solution? Heat of Reaction: 1. Hg has a specific heat of 0.139 J/goC. How much heat is ...
Converting Alcohols to Alkyl Halides – The Mitsunobu Reaction
... is to convert the alcohol into a sulfonate ester. To make a sulfonate ester, you react an alcohol with an appropriate sulfonyl chloride in the presence of an amine ...
... is to convert the alcohol into a sulfonate ester. To make a sulfonate ester, you react an alcohol with an appropriate sulfonyl chloride in the presence of an amine ...
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.