Resumen

KAPOOR, Ramesh N.; CERVANTES-LEE, Francisco  y  PANNELL, Keith H.. (Chloromethyl)diphenylphosphine Oxide Complexes of Tin and Uranium. J. Mex. Chem. Soc [online]. 2007, vol.51, n.2, pp.122-128. ISSN 1870-249X.

The reactions between (chloromethyl)diphenylphosphine oxide, ClCH₂P(O)Ph₂ (L) and Me₂SnCl₂, Ph₂SnCl₂, Ph₃SnCl and UO₂(NO₃)₂ form complexes 1, 2, 3 and 4 respectively. The organotin complexes 1, 2, 3, exhibit a 1:1 ligand metal stoichiometry while the uranyl nitrate (4) complex is a 2:1 complex. The complexes have been characterized by ¹³C, ¹¹⁹Sn and ³¹P NMR spectroscopy and their single crystal X-ray structures have also been determined. The chlorine atom of the (chloromethyl)diphenylphosphine oxide does not directly interact either intramolecularly or intermolecularly with either the uranium or tin center as determined by the internuclear distances being greater than the sum of their respective Van der Waal's radii. However, in 1 and 4 there are clear dipolar interactions that result in conformational and molecular alignments due to the presence of the CH₂Cl group.

Palabras llave : (Chloromethyl)diphenyl phosphine oxide; Tin; Uranium; complexes; stoichiometry.

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