- In chemistry, a
heteroatom (from
Ancient Gr**** heteros 'different', and atomos 'uncut') is, strictly, any atom that is not
carbon or hydrogen. In practice...
- ring with two
nitrogen heteroatoms and two
boron heteroatom. The
hypothetical chemical compound with six
nitrogen heteroatoms would be hexazine. Borazine...
-
These reactions are used to form carbon–carbon
bonds but also carbon-
heteroatom bonds. Cross-coupling
reaction are a
subset of
coupling reactions. Richard...
- In chemistry, a
double bond is a
covalent bond
between two
atoms involving four
bonding electrons as
opposed to two in a
single bond.
Double bonds occur...
-
atoms in
azoles starts with the
heteroatom that is not part of a
double bond, and then
proceeds towards the
other heteroatom.
Imidazole and
other five-membered...
-
Bonding between carbon–carbon
Bonding between carbon–
heteroatom Bonding between heteroatom–
heteroatom Bond
formation between carbon atoms forms very thermodynamically...
- In biochemistry,
flavin adenine dinucleotide (FAD) is a redox-active
coenzyme ****ociated with
various proteins,
which is
involved with
several enzymatic...
-
whereby a carbon–carbon or carbon–
heteroatom single bond is
cleaved or
undergoes lysis (breakdown) by hydrogen. The
heteroatom may vary, but it
usually is oxygen...
- two
additional single, or σ, bonds.
Addition of a
nucleophile to carbon–
heteroatom double or
triple bonds such as >C=O or -C≡N show
great variety. These...
- The main
chain contains No
heteroatom Heteroatoms present Nitrogen-containing Sulfur-containing
Aromatic cycles Poly(fluorene)s
polyphenylenes polypyrenes...
