BCH 119S Chapter Notes - Chapter 2: Coordination Complex, Dielectric, Electronegativity
30 Jan 2016
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Document Summary
Chapter 2: weak interactions in an aqueous environment. B/c very weak so can be continually broken and re-formed in dynamic molecular interplay that is life. Biological environment is not a vacuum and charges always separated by water/other molecules (dielectric medium) These mediums have characteristic value of ; the higher this value, weaker the force b/w separated charges. Molecules w/asymmetric internal distribution of charge=polar, permanent dipole and has a permanent dipole moment. Polarizable: molecule in which dipole can be induced. When 2 molecules approach very closely, they synchronize their charge fluctuations so as to give a net attractive force=van der. Van der waals radius, r: effective radius for closest molecular packing. Interaction b/w covalently bonded hydrogen atom on a donor atom ( . O h) and a pair of nonbonded electrons on an acceptor atom (o=c ) ^^interaction b/w donor and acceptor is typically represented by dotted line b/w acceptor atom and shared h.
