Preparation, Crystal Structures and Thermal Decomposition of Ba2(EDTA) and Ba2(EDTA)·2.5H2O

Chen, Shuang; Hoffmann, Stefan; Prots, Yurii; Zhao, Jing‐Tai; Kniep, Rüdiger

doi:10.1002/zaac.201000044

Cited by 10 publications

(9 citation statements)

References 19 publications

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“…The minimum in the decomposition temperature occurs at 2 phr, coinciding with the maximum in the decomposition enthalpy, which decreases steeply between 2 and 3 phr. Nanocomposite degradation temperature may also be affected by EDTA presence since Ba-EDTA degradation temperature is ∼ 250 ° C [31] (see Figure 5). Therefore, the degradation of POM might be attributed to a POM chain scission and depolymerization due to the presence of EDTA.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Influence of X-ray opaque BaSO4 nanoparticles on the mechanical, thermal and rheological properties of polyoxymethylene nanocomposites

Romero‐Ibarra

Bonilla-Blancas

Sanchez-Solis

et al. 2012

Journal of Polymer Engineering

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This work evaluates the infl uence of a radiopaque reinforcement, barium sulfate (BaSO 4 ), on the mechanical, rheological and thermal properties of polyoxymethylene (POM). Nanocomposites of POM containing spherical nanoparticles of BaSO 4 (0, 1, 2, 3 phr) were obtained by melt extrusion in a twin-screw equipment followed by injection molding. The mechanical, thermal and rheological properties of these nanocomposites and the dispersion state of the particles were investigated. Scanning and transmission electron microscopy revealed the morphology of the products. The main objective of this work is the production of nanocomposites with sulfate concentration enough to acquire radiopaque properties while maintaining the mechanical properties of the matrix. In this regard, mechanical and rheological properties were found similar to those of the polymer matrix, but radiopaque contrast tests revealed the infl uence of the nanoparticles concentration on the optical properties of the composites. The production of these nanocomposites suggests potential applications in the biomedical sector given their unique radioopacity properties.

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Section: Thermal Propertiesmentioning

confidence: 99%

Influence of X-ray opaque BaSO4 nanoparticles on the mechanical, thermal and rheological properties of polyoxymethylene nanocomposites

Romero‐Ibarra

Bonilla-Blancas

Sanchez-Solis

et al. 2012

Journal of Polymer Engineering

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“…The crystal structure of Ir-EDTA exhibits many similarities with that of Ir-H4-EDTMP. [97][98][99][100] and transition [101][102][103][104][105][106][107][108][109][110] metals, as well as for some lanthanides [111] and actinides [112].…”

Section: Molecular Catalystsmentioning

confidence: 99%

Molecular and heterogenized dinuclear Ir-Cp* water oxidation catalysts bearing EDTA or EDTMP as bridging and anchoring ligands

et al. 2020

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The development of efficient water oxidation catalysts (WOCs) is of key importance in order to drive sustainable reductive processes aimed at producing renewable fuels. Herein, two novel dinuclear complexes, [(Cp*Ir)2(μκ 3 -O,N,O-H4-EDTMP)] (Ir-H4-EDTMP, H4-EDTMP 4− = ethylenediamine tetra(methylene phosphonate)) and [(Cp*Ir)2(μ-κ 3 -O,N,O-EDTA)] (Ir-EDTA, EDTA 4− = ethylenediaminetetraacetate), were synthesized and completely characterized in solution, by multinuclear and multidimensional NMR

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“…152 Several barium EDTA complexes have been hydrothermally synthesised and characterised by single-crystal X-ray structure determination. 153 155 Treatment of Ca or Sr metal with Hg(C 6 F 5 ) 2 and 2,4,6-trimethylphenol (HOmes) in DME at room temperature has resulted in C-F bond activation, to yield a unique pair of fluoro(aryloxo)alkaline earth cages. 156 A family of alkaline earth metal perfluoro-tert-butoxides has been reported which are promising candidates for metal organic chemical vapour deposition.…”

Section: Calcium Strontium and Bariummentioning

confidence: 99%

Alkaline and alkaline earth metals

Hill

2011

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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Advances in the coordination and inorganic chemistry of the elements of Groups 1 and 2 of the periodic table from the calendar year 2010 are summarised in this non-critical review. As was the case in previous years, coverage concentrates on topics centred around the synthesis, structures and applications of coordination compounds and the organometallic chemistry of these elements. HighlightsThe isolation and reaction chemistry of kinetically-stabilised Group 2 species in which the alkaline earth centre exists in a formal +1 oxidation state has received intense international attention while interest in the potential of alkaline earth complexes as benign and inexpensive reagents for catalysis has continued to develop.

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Preparation, Crystal Structures and Thermal Decomposition of Ba₂(EDTA) and Ba₂(EDTA)·2.5H₂O

Cited by 10 publications

References 19 publications

Influence of X-ray opaque BaSO4 nanoparticles on the mechanical, thermal and rheological properties of polyoxymethylene nanocomposites

Influence of X-ray opaque BaSO4 nanoparticles on the mechanical, thermal and rheological properties of polyoxymethylene nanocomposites

Molecular and heterogenized dinuclear Ir-Cp* water oxidation catalysts bearing EDTA or EDTMP as bridging and anchoring ligands

Alkaline and alkaline earth metals

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