@article{araujo_hitchcock_nixon_vargas_1998,  title={Synthesis and Structural Characterization of [Ir4(mu-CO)(CO)7{mu4-eta3-Ph2PC(H)C(Ph)PCBu t}(mu-PPh2)]: Alkyne-Phosphaalkyne Coupling and Formation of a Novel 2-phosphabutadienylphosphine Ligand},  volume={9},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50531998000600008},  DOI={10.1590/S0103-50531998000600008},  number={6},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Araujo, Maria Helena and Hitchcock, Peter B. and Nixon, John F. and Vargas, Maria D.},  year={1998},  month={Nov},  pages={563–570} }