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document Alkane Structure, Stability, and Reactivity
Alkanes consist of only sp3 hybridized carbon and hydrogen atoms connected by covalent bonds and have a generic formula of CnH2n+2 (a relationship that also defines the maximum number of hydrogen atoms that can be present for a given number of carbon atoms). When considering the stability...
25 Jan, 2011 Comments: 0
document Steric Strain
A composite of the other strains (angle, torsional, Van der Waals) within a molecule. Steric strain is usually connected with spatial conflicts of atoms or bonds within a molecule.
16 Mar, 2011 Comments: 0
document Multiple Substituents on Cyclohexanes
Substituents on cyclohexane can, in principle, occupy either axial or equatorial positions. However, in general, equatorial substituents are more preferred since they are more stable because of reduced steric interactions. In the images below, the 1,3-diaxial interaction can be highlighted and...
01 Sep, 2011 Comments: 0
document Torsional Angle
Angle between C-X and C-Y bonds in a X-C-C-Y system when viewed along the C-C bond. Rotation about the C-C bond will change this torsional angle.  This is also known as a dihedral angle.
16 Mar, 2011 Comments: 0
document Torsional Strain
Destabilization due to the repulsion between pairs of bonds caused by the electrostatic repulsion of the electrons in the bonds.
16 Mar, 2011 Comments: 0
document Van der Waals Strain
Destabilization due to the repulsion between the electron clouds of atoms or groups. Also known as Van der Waals repulsion. This occurs when atoms or groups are too close to each other due to the electrostatic repulsion of the electrons.
16 Mar, 2011 Comments: 0

Department of Chemistry & Chemical Biology