Q2: For the following molecules, determine the number of IR active C-O stretching vibration: OFI a) Cl- CI OC181CO FeCO -Co b) CI OC-.. OC Fe Co Co CI Fe-Co
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- Indicate and circle the most important stretching signal from choices: N-H, O-H, C- - -N, C=O, C-O C8H10O2Attach a schematic diagram showing the procedure involved in the determination of observed rotation and calculation of specific rotation.For each compound, determine whether the molecule has an internal mirror plane of symmetry. If it does, draw the mirror plane on a three-dimensional drawing of the molecule. If the molecule does not have an internal mirror plane, determine whether the structure is chiral. trans-1,2dibromocyclobutane
- Without doing the calculation, which member of each pair do you expect to occur at the higher frequency? Q) C-H or C-Cl stretchingCompounds with several chiral centres may have configurations referred to as meso. Meso configurations arise when the molecule can adopt a configuration with an internal mirror plane. When this occurs, the mirror image of a molecule with an internal mirror plane is an identical configuration. Thus, even though the molecule may possess several chiral centres, they are reflection of each other (within the molecule) thus resulting in an achiral meso form. This occurs for example for tartaric acid (Figure 3.1). Because of this, tartaric acid only has three stereoisomers instead of four. It has the two chiral (R,R) and (S,S) enantiomers, and the meso form. Figure 3.1. Stereoisomers of tartaric acid. Given the information above on meso forms, how many different stereoisomers do compounds A to D (Figure 3.2) have? Figure 3.2. Structure of compounds A, B, C and D.C13 HNMR Spectroscopy, please solve this problem and explain it..