Thesis on schiff base metal complexes - Thesis: Coordination chemistry and schiff bases - Essay UK Free Essay Database
Synthesis and Characterization of Transition Metal Complexes with Hydrazone Schiff Base are reported in this thesis. Hydrazone Schiff base ligands 1 and 2 were.
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We than dissolve these crystals in warm ethanol and the resultant solution turns slightly yellow. The solution immediately turns brick red because of the precipitate that is present, suspended in the solution.
The solution remains brick red after the addition of the the sodium carbonate, but as I stir the precipitate intensifies. The first filtered crystals are pasty.
When i redissolve them in dichloromethane they form a cleared solution. Using the rotary evaporator to evaporate the dichloromethane and petroleum ether we obtain dark red crystals.
Percentage yield of Schiff base ligand: Thus the theoretical yield is: Schiff base ligand 1: Theoretical mass calculations of the nickel complex Moles Nickel acetate Schiff base ligand Nickel complex Initial moles 2. The structure of the product that forms is: So we can classify the Schiff Base complex as tetradentate ligand because one ligand donates four metal pairs to the nickel ion. Thus the nickel ion has a coordinate number of four, which constitute the square planar shape, nickel being bonded to base Nitrogens that have the lone pairs to fill the empty shell of the nickel ion.
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