-
Steric effects arise from the
spatial arrangement of atoms. When
atoms come
close together there is
generally a rise in the
energy of the molecule. Steric...
- substituent, δ is the
sensitivity factor for the
reaction to
steric effects, and Es is the
steric substituent constant.
Polar substituent constants describe...
-
variety of
factors including: (1)
metal identity and
electron density, (2)
sterics, (3) parti****ting ligands, (4)
coordination number, (5) geometry, and...
- The
steric factor,
usually denoted ρ, is a
quantity used in
collision theory. Also
called the
probability factor, the
steric factor is
defined as the ratio...
- As the name suggests, a non-nucleophilic base is a
sterically hindered organic base that is a poor nucleophile.
Normal bases are also nucleophiles, but...
-
Though several aryl
bromides were tested, only
electronically neutral,
sterically unen****bered
substrates gave good to
excellent yields. In 1984, Dale L...
-
stereoelectronic effects should not be
misunderstood as a
simple combination of
steric effects and
electronic effects.
Founded on a few
general principles that...
-
formed by its
nonbonding valence electrons is
known as the
central atom's
steric number. The
electron pairs (or
groups if
multiple bonds are present) are...
- der
Waals strain is also
called Van der
Waals repulsion and is
related to
steric hindrance. One of the most
common forms of this
strain is
eclipsing hydrogen...
- a
steric 5-cube or (
steric 5-demicube or
sterihalf 5-cube) is a
convex uniform 5-polytope.
There are
unique 4
steric forms of the 5-cube.
Steric 5-cubes...
