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Unformatted text preview: trong) bp = -33˚ hydrogen bonding (weaker) bp = -161˚ van der Waals (very weak) 460 kJ/mole 21 kJ/mole inter intermolecular interactions (noncovalent bonds)
HO H OH H Non-covalent interactions. Are they Important?
O CH2OH CHOH CHOH CHOH CHOH CHO Non-covalent interactions. Are they Important?
O CH2OH CHOH CHOH CHOH CHOH CHO molecular chemistry (chemistry of the covalent bond) light HO H + C O + O2 molecular chemistry (chemistry of the covalent bond) light HO H + C O + O2 glucose supramolecular chemistry (chemistry of the noncovalent bond) glucose HO H lysozyme snow flake primary structure tertiary structure NonNon-covalent interactions in biology.
CH2OH O CHOH CHOH CHOH CHOH CHO What are these non-covalent interactions? nonionion-ion:
Na Cl molecular chemistry light HO H + C O + O2 ionion-dipole
H H O H O H glucose supramolecular chemistry Na
H O H O H H dipoledipole-dipole
H3C O H O H CH3 5 9/15/2010 What What are these non-covalent interactions? nonionion-ion:
Na Cl Which intramolecular interactions occur between molecules of dimethyl ether? dipoledipole-dipole
C O C H O H O ionion-dipole
H H O 1. van der Walls 2. dipole-dipole 3. hydrogen bonding 4. ion-ion dipoledipole-induced dipole
C O Na
H O H O H H hydrogen hydrogen bonding
H3C O H O H CH3 van der Waals
H H C HH H C HH H A. 1 B. 2 C. 3 D. 4 E. 1 + 2 F. 1 + 2 +3 Choose the correct order with respect to increasing boiling increasing points of the following compounds. Choose Choose the correct order with respect to increasing boiling increasing points of the following compounds. A. D. B. B. E. C. C. F. van der Waals hydrogen bonding dipoledipole-dipole van der Waals dipole-dipole dipolevan der Waals A. D. D. B. B. E. E. C. C. F. F. H C C
Br OH C C C H C C H2 Pd/C C H C H C C OH Propose a synthesis of the following compound from reactants containing 4 carbon Li 1. C O C 2. H2O atoms or less. C Br Li H Br O C Br H C C OH Br Br OH 2. H2O 1. Li Br OH PCC O C Li Br H2 Pd/C OH H Br OH 1. Li Br 2. O
35 36 6 9/15/2010 1. Li OH Br 1. 2. H2O H HO O 1. Li 2. CH2=O 3. H2O Br Br Br HO H Br OH O OH Li PCC OH 2. Br 3. H2O H Br 37 38 39 7...
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This note was uploaded on 12/05/2010 for the course CHE 321 taught by Professor Fowler/sampson during the Fall '08 term at SUNY Stony Brook.
- Fall '08