@article{machado_mangrich_lehn_2003,  title={Inorganic self-assembly through sequential complexation in the formation of bimetallic and trimetallic architectures from multisite ligands based on 5,5'-disubstituted 2,2'-bipyridines},  volume={14},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532003000500013},  DOI={10.1590/S0103-50532003000500013},  number={5},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Machado, Vanderlei G. and Mangrich, Antonio S. and Lehn, Jean-Marie},  year={2003},  month={Sep},  pages={777–789} }