Flashcards in Isomers Deck (18):
molecules with the same molecular formula but arranged in different ways.
give an overview of all types of isomers
-geometric isomers (cis-/trans- isomers)
describe chain isomers
formed by branching (of alkyl groups)
describe positional isomers
functional groups (including multiple bonds) are attached in a different location
atoms connected in same order but in different arrangements in space.
define: optical isomer
same molecular/ssf different placements of groups around one atom in a molecule.
optical isomers are called optical isomers bc
they interact differently with plane polarised light
optical isomers are always
objects that are mirror images of each other which cannot be superimposed (eg. feet)
objects with atleast one plane of symmetry whose mirror images can be superimposed.
all chiral molecules contain aleast one
define:c hiral centre
(carbon atom attached to FOUR DIFFERENT GROUPS (groups = all atoms that are attached)
molecules with atleast one chiral centre arent always chiral
dfeine: geometric isomer
occur when there is restricted rotation around bonds (double bonds/rings)
describe cis isomer
when 2 different groups (fg/alkyl) are on the same side of the C=C bond
describe trans isomer
dwhen 2 different groups (fg/alkyl) are on the opposite side of the C=C bond
pair of chiral molecules. Same physical properties (except for how they interact with light), different chemical properties (eg. smell)