Phosphine oxides complexes of neodymium(III) nitrate

Massabni, A.M.G.; Gibran, M.L.R.; Serra, Osvaldo Antônio

doi:10.1016/0020-1650(78)80008-7

Cited by 16 publications

(8 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A weak doublet around 1750 cm" 1 due to combination bands arising out of τΐ and τ4 modes reaffirm the bidentate nature of NO J ions in these complexes. Occurrence of such a doublet has been assigned to the bidentate NOj ions in lanthanide phosphine oxide complexes [44,46,47]. The strong and sharp bands at 940 cm" 1 and 260 cm -1 confirmed the stretching and bending frequencies respectively of the uranyl ion.…”

Section: Characterization Of U(vi) Complexesmentioning

confidence: 93%

Extraction of Np(IV), Np(VI), Pu(IV) and U(VI) with Amides, BEHSO and CMPO from Nitric Acid Medium

et al. 1996

View full text Add to dashboard Cite

The extraction of Np(IV), Np(VI), Pu(IV) and U(VI) from a nitric acid medium has been carried out with dibutyldecanamide (DBDA), dihexyldecanamide (DHDA), bis-2-ethylhexylsulphoxide (BEHSO) and octyl(phenyl)-N-N-diisobutyl-carbamoylmethylphosphine oxide (CMPO) using n-dodecane as the diluent. The order of extraction for the metal ions is CMPO> BEHSO>DHDA>DBDA. The species extracted into the organic phase was found to be the disolvate with all the extractante while using hexavalent metal ions Np(VI) and U(VI) and also with tetravalent ions Np(IV) and Pu(IV) in the case of BEHSO and CMPO. However, in the case of DBDA and DHDA, Np(IV) and Pu(IV) were extracted as the trisolvate species. The equilibrium constant (K) for the formation of the above species has been evaluated after applying the possible correction factors. In general, log A" increases with increasing basicity of the extractants. In the case of amides, the plot of log A -verses k H (acid uptake equilibrium constant) gave straight lines which could be represented by the empirical equation : logici) = 5.17 k H + 0.18 and log = 3.11 k H + 1.81 for the respective metal ions. With the help of these empirical equations it is possible to predict the equilibrium constant values of amide complexes of U(VI) or Pu(IV) if the k H values of amides are known. The solid complexes of U(VI) with DHDA and CMPO were synthesized and characterized by elemental analysis and IR spectra. Two molecules of DHDA and only one molecule of CMPO are bound with U(VI). The bidentate nature of CMPO in its solid species has been confirmed.

show abstract

Section: Characterization Of U(vi) Complexesmentioning

confidence: 93%

Extraction of Np(IV), Np(VI), Pu(IV) and U(VI) with Amides, BEHSO and CMPO from Nitric Acid Medium

et al. 1996

View full text Add to dashboard Cite

show abstract

“…Complexes with trimethylphosphine oxide, Me 3 PO and triethylphosphine oxide, Et 3 PO, with Nd(NO 3 ) 3 have the composition [Nd(NO 3 ) 3 (R 3 PO) 3 ] with the nitrate ions being assigned as 2 j biden-tate ligands on the basis of infrared spectroscopy [10]. The structure of [Y(NO 3 ) 3 (Me 3 PO) 3 ] shows the metal to be 9-coordinate with 2 j nitrates [11].…”

Section: Complexes With Lanthanide Nitratesmentioning

confidence: 99%

“…Similar structures were reported for [Eu(CF 3 COCFCOCF 3 ) 3 ((C 6 F 5 ) 3 PO) 2 ] and [Er(CF 3 COCFCOCF 3 ) 3 (Ph 3 PO) 2 ] [56] and the solution properties were studied by variable temperature 19 F and 31 P NMR spectroscopy. These indicated that reversible dissociation of the The phosphine oxide functionalised ionic liquids, (10), have been evaluated as tunable complexation agents by altering the chain length, n [59]. Increasing n increases the binding ability of (10) to lanthanide ions.…”

Section: Complexes With Lanthanide B-diketonatesmentioning

confidence: 99%

Lanthanide phosphine oxide complexes

Platt

2017

Coordination Chemistry Reviews

View full text Add to dashboard Cite

Phosphine oxide complexes of lanthanide metal have been studied to elucidate the fundamental aspects of their structural chemistry and to develop important technological applications mainly in the reprocessing of nuclear fuels and in photoluminescent devices but also in other fields such as gas sorption and homogeneous catalysis. The aim of this review is to give an overview of the range of complexes with phosphine oxides and trivalent lanthanide and yttrium ions, their structural features and applications.

show abstract

“…This is due to the formation of coordinate bonds between Ph 3 PO and Ln 3+ ions. We assign this band as a π–π* transition . At wavelengths less than 300 nm a strong n–π* transition is observed for all complexes.…”

Section: Resultsmentioning

confidence: 77%

Triphenylphosphane Oxide Complexes of Lanthanide Nitrates: Polymorphs and Photophysics

Barnes

Kelly

Melzer

et al. 2018

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

A series of mer‐[Ln(NO3)3(Ph3PO)3] complexes were prepared from Ln(NO3)3·xH2O and Ph3PO in chloroform (Ln = La, Nd, Sm, Eu, Gd, Tb, Dy, and Er). The La and Nd complexes were 0.25 CHCl3 solvates, whereas the others were solvent‐free. The identical reaction using Yb(NO3)3·xH2O produced the unique salt trans‐[Yb(NO3)2(Ph3PO)4][Yb(NO3)4(Ph3PO)]·Et2O. All nitrate ions in all complexes are η2‐chelating. A comparison of the various [Ln(NO3)3(Ph3PO)3] structures, including those in the literature, reveals at least four common polymorphs, each of which is represented by isomorphic structures of multiple Ln ions. Luminescence of mer‐[Ln(NO3)3(Ph3PO)3] (Ln = Y, La, Nd, Sm, Eu, Gd, Tb, and Dy), trans‐[Yb(NO3)2(Ph3PO)4][Yb(NO3)4(Ph3PO)] and Ph3PO assignments are reported. Latva's empirical rule allows for the antenna effect, in which energy is transferred from the triplet state of the Ph3PO ligand, to occur only for Tb3+. Excitation via Ph3PO results in strong green luminescence for Tb3+ having twice the intensity as that which results from direct excitation of the f‐f transitions.

show abstract

Phosphine oxides complexes of neodymium(III) nitrate

Cited by 16 publications

References 22 publications

Extraction of Np(IV), Np(VI), Pu(IV) and U(VI) with Amides, BEHSO and CMPO from Nitric Acid Medium

Extraction of Np(IV), Np(VI), Pu(IV) and U(VI) with Amides, BEHSO and CMPO from Nitric Acid Medium

Lanthanide phosphine oxide complexes

Triphenylphosphane Oxide Complexes of Lanthanide Nitrates: Polymorphs and Photophysics

Contact Info

Product

Resources

About