Tetraethylene Glycol Adducts of Alkaline Earth Halides

Gschwind, Fabienne; Fromm, Katharina M.

doi:10.1002/zaac.201100192

Cited by 10 publications

(7 citation statements)

References 59 publications

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“…Polyethylene glycols (PEG) coordinate readily to alkaline and alkaline‐earth metals in a multidentate mode . Those glycols and solutions thereof have been proposed as green reaction media for biphasic catalysis in order to facilitate the separation of reactants and/or catalysts from products .…”

Section: Resultsmentioning

confidence: 99%

“…Polyethyleneg lycols (PEG) coordinate readily to alkaline and alkaline-earth metalsi namultidentate mode. [153][154][155] Those glycols and solutions thereof have been proposed as green reaction media for biphasic catalysis in order to facilitate the separation of reactants and/or catalysts from products. [156] To that end, the metal cation coordination ability of PEG solutions is an important parameter to consider.S ince the structural data set found for each specific PEG is smaller than the threshold adopted in this work, we cannot evaluate from crystal structures their coordinatinga bilities.…”

Section: Solventsmentioning

confidence: 99%

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Coordinating Ability of Anions, Solvents, Amino Acids, and Gases towards Alkaline and Alkaline‐Earth Elements, Transition Metals, and Lanthanides

Álvarez

2020

Chemistry A European J

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After briefly reviewing the applications of the coordination ability indices proposed earlier for anions and solvents toward transition metals and lanthanides, a new analysis of crystal structures is applied now to a much larger number of coordinating species: anions (including those that are present in ionic solvents), solvents, amino acids, gases, and a sample of neutral ligands. The coordinating ability towards s‐block elements is now also considered. The effect of several factors on the coordinating ability will be discussed: (a) the charge of an anion, (b) the chelating nature of anions and solvents, (c) the degree of protonation of oxo‐anions, carboxylates and amino carboxylates, and (d) the substitution of hydrogen atoms by methyl groups in NH3, ethylenediamine, benzene, ethylene, pyridine and aldehydes. Hit parades of solvents and anions most commonly used in the areas of transition metal, s‐block and lanthanide chemistry are deduced from the statistics of their presence in crystal structures.

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Section: Resultsmentioning

confidence: 99%

Section: Solventsmentioning

confidence: 99%

Coordinating Ability of Anions, Solvents, Amino Acids, and Gases towards Alkaline and Alkaline‐Earth Elements, Transition Metals, and Lanthanides

Álvarez

2020

Chemistry A European J

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“…The bond valence sum provided by O1–O4, O5–O6, and O8 amounts to 1.99, justifying the additional coordination of O6 and hence the unusual coordination number 7 for magnesium. 79−81 The LCuMg entity is not completely planar, as the two aromatic rings form an angle of 4.36°. This is explained by an antiparallel arrangement of the complexes, which leads to alternating parallel strands featuring Cu(II)–C14 interactions [3.318(9) Å] and π–π interactions along the crystallographic b -axis (Figure 3).…”

Section: Resultsmentioning

confidence: 99%

Compartmentalization of Alkaline-Earth Metals in Salen-Type Cu- and Ni-Complexes in Solution and in the Solid State

et al. 2019

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The precise arrangement of metal ions in type and number by a ligand represents an important challenge in biology as well as in materials science. The preorganization of different metal ions such as alkaline-earth and transition-metal ions is of particular interest for the design of catalysts or precursors of oxides. This study is based on a Ω-shaped salen-derived ligand comprising N 2 O 2 and O 2 O 2 coordination sites. The selective binding of Cu(II) and Ni(II) and alkaline-earth-metal ions is influenced by many factors such as the size of the cation, the solvent, or the counterion. UV–vis and 1 H NMR titrations and single-crystal X-ray structures reveal that the obtained complexes tend to adopt different structures in solution compared to the solid state. Mainly discrete motifs with a stoichiometry 1:1 (LM 1 to alkaline-earth-metal ions) have been shown to form in the solid state, whereas in solution, the 2:1 complexes are predominant.

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“…Such long, symmetrically as well as asymmetrically substituted ligands derived from oligoethylene glycols, of which Li1 is one member, can also be used to generate other metal ion complexes [27][28][29][30][31]. Among those, it might be interesting to highlight the heterobimetallic compounds which are low-temperature precursors leading to mixed metal oxide materials upon combustion [32].…”

Section: Applications and Outlooksmentioning

confidence: 99%

Silver coordination polymers with isonicotinic acid derived short polyethylene glycol – Synthesis, structures, anion effect and solution behavior

Fromm

Sague

Robin

2013

Inorganica Chimica Acta

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Silver coordination compounds and one-dimensional polymers have been studied, using a linear, flexible N-donor ligand. The solid state structures are well known and show panoply of different structures including a large number of polymorphism, pseudo-polymorphism and isomers. We have studied these structures under the influence of anions, solvents and crystallization conditions, studying also some solution effects. We here present an overview with highlights of some case studies of the synthesis, structures, anion and solvent effects as well as solution behavior during formation of silver coordination polymers. Finally, we will give an outlook on the potential applications of these materials.⇑ Corresponding author.

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Tetraethylene Glycol Adducts of Alkaline Earth Halides

Cited by 10 publications

References 59 publications

Coordinating Ability of Anions, Solvents, Amino Acids, and Gases towards Alkaline and Alkaline‐Earth Elements, Transition Metals, and Lanthanides

Coordinating Ability of Anions, Solvents, Amino Acids, and Gases towards Alkaline and Alkaline‐Earth Elements, Transition Metals, and Lanthanides

Compartmentalization of Alkaline-Earth Metals in Salen-Type Cu- and Ni-Complexes in Solution and in the Solid State

Silver coordination polymers with isonicotinic acid derived short polyethylene glycol – Synthesis, structures, anion effect and solution behavior

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