Synthesis and structure of lanthanide complexes with large-bite diphosphine dioxide ligands

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Authors

SPÍCHAL Zdeněk VRBKOVÁ Blanka MORAVEC Zdeněk PINKAS Jiří NEČAS Marek

Year of publication 2011
Type Article in Periodical
Magazine / Source Polyhedron
MU Faculty or unit

Faculty of Science

Citation
Web http://dx.doi.org/10.1016/j.poly.2011.03.027
Field Inorganic chemistry
Keywords Diphosphine dioxide;Lanthanides;Coordination polymers;Chelates;X-ray crystallography
Description Three large-bite diphosphine dioxide ligands were reacted with lanthanide salts to yield either molecular or polymeric complexes. The two flexible ligands gave bischelate complexes of general formulae [Ln(dppfO2)2Clx(NO3)2-x][FeCl4] and [Ln(dppdO2)2(NO3)2]NO3, where dppfO2 and dppdO2 are bis(diphenylphosphoryl) ferrocene and bis(diphenylphosphoryl)diphenyl ether, respectively. Reactions of the rigid bis(diphenylphosphoryl)benzene (dppbO2) with lanthanide salts yielded linear coordination polymers of a 1:1.5 metal-to-ligand stoichiometry. The compounds were studied by single crystal X-ray diffraction, IR spectroscopy, mass spectrometry, and TG/DSC techniques.
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