Double Bonds

Some articles on double bonds, double bond, bond, double:

Resonance (chemistry) - Resonance Energy - Resonance Energy of Benzene
... Hydrogenation of one mole of double bonds delivers 119.7 kJ (28.6 kcal), as can be deduced from the last step, the hydrogenation of cyclohexene ... however, 23.4 kJ (5.6 kcal) are needed to hydrogenate one mole of double bonds ... energy is also the difference between the hydrogenation energy of three 'non-resonance' double bonds and the measured hydrogenation energy (3 × 119.7) − 208.4 = 150.7 kJ/mol (36 kcal) ...
Acyclic Diene Metathesis
... The new double bonds formed can be in cis- or trans-configuation, the exact ratio depends on the monomer and catalyst structures ... The polybutadiene had a weight average molar mass (Mw) of 28,000 with over 70% trans double bonds ... The poly(octenylene) had an Mw of 108,000 with over 90% trans double bonds ...
Birch Reduction - Reaction Regioselectivity
... electron donors such as methoxyl or alkyl is that the product will have the residual double bonds bearing the maximum number of substituents ... withdrawing groups such as carboxyl, the substituent groups avoid the double bonds ... In both cases, with electron donating and with withdrawing groups, the residual double bonds are unconjugated (vide infra) ...
Trans Fat - Chemistry
... terms, trans fat refers to a lipid molecule that contains one or more double bonds in trans geometric configuration ... A double bond may exhibit one of two possible configurations trans or cis ... In trans configuration, the carbon chain extends from opposite sides of the double bond, rendering a straighter molecule, whereas, in cis configuration, the carbon chain ...
Alpha-Parinaric Acid
... it contains 18 carbon atoms and 4 conjugated double bonds ... The repeating single bond-double bond structure of α-parinaric acid distinguishes it structurally and chemically from the usual "methylene-interrupted" arrangement of polyunsaturated fatty acids that have double-bo ... Because of the fluorescent properties conferred by the alternating double bonds, α-parinaric acid is commonly used as a molecular probe in the study of biomembranes ...

Famous quotes containing the words bonds and/or double:

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    Society’s double behavioral standard for women and for men is, in fact, a more effective deterrent than economic discrimination because it is more insidious, less tangible. Economic disadvantages involve ascertainable amounts, but the very nature of societal value judgments makes them harder to define, their effects harder to relate.
    Anne Tucker (b. 1945)