Thursday, February 7, 2013

Post #1



Asparagine

      IUAPC name: 2-amino-3-carbamolypropanoic acid


                                                C4H8N2O3                                                                        

 

Molecular Weight: 132.12 g


  Physical Properties
  • Melting Point: 235 °C
  • Boiling Point: 438.029 °C
  • Flashpoint: 218.712 °C
  • Density: 1.405 g/cm3 
  • Solubility: soluble in acid and alkali solution; slightly soluble in water; hardly soluble in ethanol, ethyl ether, methanol, and benzene
 
Intermolecular Forces

Dispersion forces are present in all atoms or molecules that have electrons, so asparagine exhibits dispersion forces.  The compound will have higher dispersion forces, because dispersion forces increase with increasing molar mass.  Greater dispersion forces result in increased boiling points, this is also reflected in asparagine as it has a boiling point of 438.029 °C.  In addition, dipole-dipole forces exist in asparagine because it is a polar molecule.  Hydrogen bonding also takes place.  For example, the NH2 atom has one unshared pair of electrons and can form one hydrogen bond, the oxygen atoms of C=O groups have two unshared pairs of electrons and can form two hydrogen bonds with hydrogen atoms.