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Molecular Representations - Coggle Diagram
Molecular Representations
Structure
2D
Bond-Line/Skeletal Stucture (w/o lp)
PS. Cardinal Rule: No more than 4 bonds to a C.
Functional Groups
Lewis, Partially condensed, Condensed, Structure and Molecule Formula
Resonance Structure
Allyl Positions
Vinylic Positions
3D
Common
Dashed Wedges
Back into the paper
Solid Wedges
Out of the paper
Others
Newman, Fischer, Haworth Projection, etc.
Charge and lp
Formal Charge of C
A positive charge, carbocation, three bonds, and one empty orbital
A negative charge, carbanion, three bonds, and one lone pair
Formal Charge of O
Formal Charge of N
Resonance
C have unhybridized p orbitals.
Delocalized e
More spread out,
lower energy, more stable
close to nuclei, maximizing attractions
Span a greater distance,
more freedom minimizing repulsion
Lone pair adjacent to an atom with an unhybridized p orbital
MO
Nonbonding
Bonding
Anti-bonding
Formal Charges
Conditions
Allylic C+
Lone pair adjacent to a C+
Pi bond between atoms of different electronegativity (due to the attraction)
Conjugated pi bonds in the ring
Major Form (Stability)
The greatest number of filled octets
Fewer formal charges
Negative charge on the more electronegativity atom
Exceptions