INORGANIC LAB QUESTIONS--i\'ve included the entire lab if needed. questiosn at e

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INORGANIC LAB QUESTIONS--i've included the entire lab if needed. questiosn at end, please only answer if you understsand and know the correct answers.

Synthesis of meso-Tetraphenylporphyrin L Introduction Porphyrins are aromatic macrocycles that have received great interest by inorganic chemists in the last 60 years. Several classes of this macrocycle exist, each differing in the type of side chains that are attached. Porphyrins bind metals through the nitrogen atoms that are located in the central cavity of the structure. The resulting metalloporphyrins are attractive due to their involvement in various biological systems. Perhaps the most well-known example is the heme group found in the protein hemoglobin. This group consists of an iron atom attached to a porphyrin ring and plays a major role in the uptake and storage of oxygen within red blood cells. Metalloporphyrins have been found to participate in a variety of biological functions and investigating how these compounds (and related metal-containing molecules) are involved in cellular mechanisms has helped form the backbone of studies in bioinorganic chemistry In this lab you will synthesize meso-tetraphenylporphyrin through a condensation reaction between pyrrole and benzaldehyde (Figure 1). You will use this product as the starting material for the synthesis of a metalloporphyrin compound next week. Before you begin working, you will be provided with a brief introduction to magnetic susceptibility measurements and how data collected from such measurements can be used to determine the number of unpaired electrons present in inorganic species 4 Hao 3 H HN Figure 1: Synthesis of meso-tetraphenylporphyrin (TPPH20 IL objectives Synthesize a porphyrin Become familiar with performing measurements and calculations related to the magnetic susceptibility of an inorganic compound.

Explanation / Answer

1. TPPH2 and metalloporphyric will not belong to the same point group. As, TPPH2 has an inversion center which metalloporphyrin does not have.

2. Have to start with meta-methoxy benzaldehyde.

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