Organic Chem Flashcards
(23 cards)
Friedrich Wohler
Discovered Urea disproving vitality theory; Ammonium cyanate + heat = Urea
Jans Jacob Berzelius
Isomerism
Adolph Wilhelm Hermann Kolbe
carbon disulfide –> acetic acid; total disproval of vitalism
Linus Pauling
constituted resonance
August Kekule
cyclic form of benzene, C atom form 4 bonds to form long chain
Gilbert Lewis
Lewis Structure, covalent bonding, octet rule
Robert Robinson
focused in the movement of e- in order to show that it is the driving force of chm rxn
Difference of Lewis Structure and Resonance
Lewis structure: localization of e-
Resonance: Delocalization of e-
Lewis Structures
E- are shared or unshared
Resonances
e- are shared by several nuclei and redistributed for more stable arrangement
Formal Charge
Overall charge considering all
Isomer
different compounds that has same molecular formula
Constitutional Isomers
compounds whose atoms are bonded differently
Stereoisomers
compounds whose atoms are oriented differently
Enantiomers
Stereoisomers that are mirror images but not superimposable
Diastereomers
Stereoisomers that are not mirror images of one another
Aleipar
Greek Fat
Alkane
Paraffin; parum affinis: low affinity
Alkenes
Olefins
Alkynes
CnH2n-2
Alkenes
CnH2n
Contributing Structures
representation of diff Lewis structures
Resonant Hybrid
combination of two resonance hybrid