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Lees AM, Platt AW. Complexes of lanthanide nitrates with bis(diphenylphosphino)methane dioxide. Inorg Chem. 2003;42(15):4673-9doi: 10.1021/ic0342954.
Lees, A. M., & Platt, A. W. (2003). Complexes of lanthanide nitrates with bis(diphenylphosphino)methane dioxide. Inorganic chemistry, 42(15), 4673-9. https://doi.org/10.1021/ic0342954
Lees, Anthony M J, and Platt, Andrew W G. "Complexes of lanthanide nitrates with bis(diphenylphosphino)methane dioxide." Inorganic chemistry vol. 42,15 (2003): 4673-9. doi: https://doi.org/10.1021/ic0342954
Lees AM, Platt AW. Complexes of lanthanide nitrates with bis(diphenylphosphino)methane dioxide. Inorg Chem. 2003 Jul 28;42(15):4673-9. doi: 10.1021/ic0342954. PMID: 12870959.
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Inorg Chem. 2003 Jul 28;42(15):4673-9. doi: 10.1021/ic0342954.

Complexes of lanthanide nitrates with bis(diphenylphosphino)methane dioxide.

Inorganic chemistry

Anthony M J Lees, Andrew W G Platt

Affiliations

  1. School of Sciences, Staffordshire University, College Road, Stoke-on-Trent, ST4 2DE, UK.

PMID: 12870959 DOI: 10.1021/ic0342954

Abstract

The reactions of lanthanide nitrates, Ln(NO(3))(3), with bis(diphenylphosphino)methane dioxide, Ph(2)P(O)CH(2)P(O)Ph(2) (L), lead to complexes with three distinct classes of structure. At low ratios of Ln:L (<1:1.5) in acetonitrile the ionic complexes [Ln(NO(3))(2)L(2)](+)[Ln(NO(3))(4)L](-) (Ln = Pr, Eu) have been isolated. When carried out with a 1:2 or higher ratio in ethanol the reaction yields Ln(NO(3))(3)L(2) (Ln = La,Ce) and [Ln(NO(3))(2)L(2)H(2)O](+)[NO(3)](-) (Ln = Nd, Gd, Ho). Geometrical isomerism is found for the cations [Ln(NO(3))(2)L(2)H(2)O](+) and is attributed to the extent of hydrogen bonding to the coordinated water. Ligand redistribution occurs on heating in the solid state giving yellow solids in all cases. Crystallization of these materials from ethanol or acetonitrile gives [Ln(NO(3))L(3)](2+).2[NO(3)](-), which have been structurally characterized for Ln = Gd and Yb. Electrospray mass spectra indicate that extensive ligand exchange reactions occur in solution.

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