Organic Chemistry (CHEM311) Fall 2005 Dr Robert F Dias ESTER Look for C-O absorption of medium intensity near 1300-1000 cm-1 There will be no O-H band ALDEHYDE Look for aldehyde type C-H absorption bands These are two weak absorptions to the right of the C-H stretch near 2850 cm-1 and 2750 cm-1 and are caused by the C-H bond
Learning and practicing the basics of Organic Chemistry will help you immensely in the long run as you learn new concepts and reactions Some people say that Organic Chemistry is like another language, and in some aspects, it is At first it may seem difficult or overwhelming, but the more you practice looking at and drawing organic molecules, the
What makes an organic molecule different from an inorganic molecule is that organic molecules MUST contain carbon-hydrogen bonds, whereas inorganic molecules do not The four major types of organic molecules are carbohydrates, lipids, proteins, and nucleic acids In this lab you will construct and study carbohydrates, lipids and amino acids
Structures of organic molecules, whether 2D or 3D, can be intimidating However, understanding the shape of organic molecules is incredibly important Minor differences among isomers can lead to vastly different properties For example, 1,2-ethanediol (ethylene glycol) and one of its structural isomers, dimethyl peroxide Ethylene glycol is
7 What determines how organic molecules will look and behave? Organic molecules have four common characteristics First, they are all carbon based, meaning they contain carbon They are formed from just a few elements that join together to form small molecules together, or bond, to form large molecules The third characteristic of all organic
Some general properties of organic compounds include: 1) Like all molecular compounds, organic molecules typically have low melting points (in fact many are liquids at room temperature) This is because London forces and dipole-dipole interactions are usually the forces acting between molecules (p 161)
A molecule absorbs infrared radiation when the vibration of the atoms in the molecule produces an oscillating electric field with the same frequency as the
Organic molecules are based on carbon, usually in combination with Note that these same elements are not as common on Earth, where O, Si, Fe, Al and Mg