| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Junk, Peter C.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2018New, environmentally friendly, rare earth carboxylate corrosion inhibitors for mild steelcitations
- 2017Synthesis and Structures of Rare Earth 3-(4′-Methylbenzoyl)-propanoate Complexes-New Corrosion Inhibitorscitations
- 2016Structural diversity of lanthanoid salicylate hydratescitations
- 2015Conditions Favoring the Formation of Monomeric PtIII Derivatives in the Electrochemical Oxidation of trans-[PtII{(p-BrC6F4)NCH2CH2NEt2}Cl(py)]citations
- 20002,6-Diphenylphenolates of calcium, strontium and barium exhibiting π-phenyl encapsulation of the partially naked cationscitations
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article
Structural diversity of lanthanoid salicylate hydrates
Abstract
<p>From metathesis reactions between lanthanoid salts and sodium salicylate (Na(salH)) in water, four classes of lanthanoid salicylate hydrates have been identified. Single crystal X-ray studies established a new monomeric class [Ln(salH)<sub>3</sub>(H<sub>2</sub>O)<sub>3</sub>]·3H<sub>2</sub>O (6Ln). This new rhombohedral R3c, Z = 6 form ‘6Ln’ has the nine coordinate metal atom on a crystallographic 3-axis, for Ln = Sm–Gd, Ho, Er, Yb, Lu, Y. We also have augmented or defined the previously known different forms, consolidating or extending their putative ‘domains of existence’. The monohydrate, Ln = ‘1Ce’, monoclinic, P2<sub>1</sub>/n, has been re-examined at low-temperature suggesting further elasticity in its formulation beyond the recently proposed ‘[Ln(H<sub>2</sub>sal)(Hsal)(sal)H<sub>2</sub>O)]<sub>(∞|∞)</sub>’ for the Ln = Gd complex, ‘1Gd’, one of the protonic hydrogen atoms being associated with a very short phenoxyl–O⋯carboxylate–O distance (2.427(3) Å). With refinement and the insights from a previous Ln = Eu study, suggest the protonic disposition to be around the O⋯O median. The ‘domain of existence’ for this form embraces Ln = La (dependent on a powder diffraction study) – Gd. The tetrahydrate is manifested in two forms: triclinic, centrosymmetric binuclear [Ln<sub>2</sub>(salH)<sub>6</sub>(H<sub>2</sub>O)<sub>4</sub>]·4H<sub>2</sub>O, P1¯, Z = 1, ‘4Ln’ recorded here in a 153 K determination, for Ln = Ho, consolidating the assignment of its domain of existence to be Ho–Er, Y, and ‘polymeric mononuclear’ [Ln(salH)<sub>3</sub>(H<sub>2</sub>O)<sub>2</sub>]<sub>(∞|∞)</sub>·2H<sub>2</sub>O, ‘4Ln,’ recorded here for Ln = Tb–Er, Yb, Lu, Y. The 6Gd hexahydrate shows paramagnetic f<sup>7</sup> magnetic behaviour. The reaction conditions leading to the isolation of a particular structural type of lanthanoid salicylate could not be reliably identified, indicating that a fine balance exists in the preferential crystallization of the lanthanoid salicylate hydrate phases. The discovery of the monomeric class has applications for the species acting as a corrosion inhibitor in dilute aqueous solution.</p>