ORGANIC MOLECULE GEOMETRY Molecular Geometry Molecular Geometry Types ||| Types II  Elmhurst College Alkanes Alkynes  Optical or Chiral  Chemistry Department Alkenes ||| Cis / Trans Alkenes All Functional Groups Rings  Virtual ChemBook

Quiz on Functional Groups and Molecular Geometry Molecular geometry is associated with the specific orientation of bonding atoms. For organic molecules, we will observe the same types of geometry - linear, trigonal planar, tetrahedral, trigonal pyramid, and bent. When a molecule consists of many atoms, each carbon, oxygen, or nitrogen atom may be the center of the one of the geometries previously listed. The molecule as a whole will be the sum of all of the individual geometries to give an overall shape to the molecule.
R = any number carbons in a hydrocarbon chain *CHIME plug-in required to view these images.
Functional Group Name	General Structure	Structure and Molecular Geometry	Name Graphic Chime*
Alkane		CH3CH2CH3   What is the molecular geometry of each carbon? Answer tetrahedron	Chime
Alkene		CH2=CHCH3 What is the molecular geometry of carbon with all single bonds? Answer tetrahedron What is the molecular geometry of each carbon with double bonds? Answer trigonal planar	Chime
Alkyne		CH=CCH3   What is the molecular geometry of carbon with all single bonds? Answer tetrahedron What is the molecular geometry of each carbon with triple bonds? Answer linear	Chime
Alcohol	R-OH	CH3CH2CH2OH What is the molecular geometry of carbon with all single bonds? Answer tetrahedron What is the molecular geometry of the oxygen of the alcohol group? Answer bent	Chime
Ether	R-O-R	CH3CH2O-CH2CH3 What is the molecular geometry of carbon with all single bonds? Answer tetrahedron What is the molecular geometry of oxygen with single bonds? Answer bent	Chime
Aldehyde		What is the molecular geometry of each carbon with double oxygen? Answer trigonal planar See formaldehyde.	Chime
Ketone		What is the molecular geometry of each carbon with double oxygen? Answer trigonal planar See formaldehyde.	Chime
Acid		What is the molecular geometry of carbon with double bond oxygen? Answer trigonal planar What is the molecular geometry of oxygen with single bonds? Answer bent	Chime
Ester		What is the molecular geometry of carbon with double bond oxygen? Answer trigonal planar What is the molecular geometry of oxygen with single bonds? Answer bent	Chime
Amine	R-NH2 or R-NH-R	CH3CH2CH2NH2 What is the molecular geometry of carbon with all single bonds? Answer tetrahedron What is the molecular geometry of nitrogen with single bonds? Answer trigonal pyramid See ammonia molecule	Chime
Amide		What is the molecular geometry of carbon with double bond oxygen? Answer trigonal planar An additional molecular geometry is centered on the nitrogen through an exceptional circumstance of the bonding. This is BENT and also flat as an extension of the trigonal planar geometry.	Chime