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Novel meso-polyarylamine-BODIPY hybrids: synthesis and study of their optical properties

Erik Lager1, Jianzhao Liu, Angélica Aguilar-Aguilar

  • 1Departamento de Química, Universidad de Guanajuato, Col. Noria Alta S/N, Guanajuato, Gto. 36050 Mexico.

The Journal of Organic Chemistry
|February 11, 2009
PubMed

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The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.
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Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...