Structures of alkali and alkaline earth metal clusters with oxygen donor ligands

Fromm, Katharina M.; Gueneau, Estelle D.

doi:10.1016/j.poly.2004.04.014

Cited by 77 publications

(44 citation statements)

References 154 publications

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“…This has first led us to the field of alkali [9][10][11][12] and alkaline earth metal compounds, [13,14] of which a number of new clusters were observed. [15][16][17][18][19][20][21][22][23] Being hard metal ions, mainly O-donor ligands were chosen for the coordination to these group 1 and 2 ions.…”

Section: S-block Compoundsmentioning

confidence: 99%

“…Among these ligands are charged monodentate ligands OR, R = H, alkyl, aryl, [22,23] as well as the neutral polyether ligands such as oligo dimethyl ethers, [24][25][26][27][28][29][30][31][32] crown ethers [33,34] or calixarene ligands. [9][10][11][12] While studying these compounds, some of them exhibited unforeseen structures and properties, such as the ion-conductivity observed in one-dimensionally stacked crown ethers or calixarenes. [10,34] Especially the mixed metal cage compounds containing alkali and alkaline earth metal ions, like the [CaLi 6 (OPh) 8 (thf) 6 ] of Fig.…”

Section: S-block Compoundsmentioning

confidence: 99%

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From Alkaline Earth Ion Aggregates via Transition Metal Coordination Polymer Networks towards Heterometallic Single Source Precursors for Oxidic Materials

Gschwind¹,

Crochet²,

Maudez³

et al. 2010

Chimia

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Heterometallic oxides are used as materials in many applications, e.g. from ferroelectrics to superconductors. Making these compounds usually requires high temperatures and long reaction times. Molecular precursors may contribute to render their processing shorter and accessible at lower temperatures, thus cheaper in energy and time. In this review article, different approaches toward oxide materials will be shown, starting with homometallic clusters and coordination polymers and highlighting recent results with heterometallic single source precursors. On the way to the latter, we came across many exciting results which themselves allowed applications in different fields. This work will give an overview on how these fields were brought together for the current mixed metallic compounds as precursors for heterometallic oxides.

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Section: S-block Compoundsmentioning

confidence: 99%

Section: S-block Compoundsmentioning

confidence: 99%

From Alkaline Earth Ion Aggregates via Transition Metal Coordination Polymer Networks towards Heterometallic Single Source Precursors for Oxidic Materials

Gschwind¹,

Crochet²,

Maudez³

et al. 2010

Chimia

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“…The coordination chemistry of alkali metal cations and their interactions with ligands have been widely studied in the past years [7][8][9][10] including the chemistry of molecular clusters [11,12] or macrocyclic compounds [13][14][15]. Many of the obtained complex compounds have potential applications in biological, inorganic, and synthetic chemistry [16,17] and in biotechnology [18].…”

Section: Introductionmentioning

confidence: 99%

Alkali metal halogenides coordination compounds with hexamethylenetetramine

et al. 2012

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, have been synthesized and characterised by IR spectroscopy, thermogravimetry coupled with differential thermal analysis, elemental analysis and X-ray crystallography. Both the sodium compounds are isostructural in a solid state, an isostructurality is also observed between compounds containing potassium and rubidium iodides. The sodium compounds exist as dimers (dinuclear core of the complex ion is created by two sodium cations and two water molecules). The molecules of potassium and rubidium compounds are assembled to the two dimensional hybrid nets. The each potentially multifunctional ligand (the hmta) exists in the outer coordination sphere in lithium compounds, acts in a monodentate mode in sodium compounds and in bidentate-bridging modes in potassium and rubidium compounds. The lithium ions are four coordinated, and the sodium, potassium and rubidium ions are six coordinated. Thermal analyses show that the investigated compounds decompose gradually with the formation of alkali metal halides which, during the further heating, are totally removed or they undergo partial decomposition to oxides.

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“…High electropositive metals, such as alkali, alkaline earth metals, and lanthanides, react directly with alcohols to liberate a hydrogen molecule and the corresponding metal alkoxide/aryloxide. [2,4,18] Anodic dissolution of the metal (Sc, Y, Ti, Fe, Co, Ni, Cu) by electrochemical routes in dry alcohols and conducting electrolytes appears to be a promising procedure for metal alkoxide synthesis. [2] Aryloxide ligands are easily available and can form rather stable metal aryloxides with oxygen bridges between different metal ions, [16] a property that can be useful in the construction of metal organic frameworks (MOFs), clusters, and coordination polymer compounds.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of New Pentacoordinate Iron‐Based Aryloxide Complexes

2012

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Heterobimetallic lithium–iron coordination compounds are interesting targets for several reasons: they can be used as precursors for mixed metal oxides, as catalysts, for example, for ring‐opening polymerization reactions or to study oxidation/reduction processes. Finally their magnetic properties are also of interest. New heterobimetallic aryloxide complexes, namely [(thf)4Li3Fe(OPh)3(O2C6H4)Cl]2 (1), [{(thf)3Li3Fe(OPh)5Cl}3]n (2), and [(thf)3Li3Fe(OPh)6]2 (3), have been synthesized and characterized by single‐crystal X‐ray diffraction. While compounds 1 and 3 were synthesized by an oxidative substitution reaction, compound 2 was directly obtained from the FeIII salt. These compounds are accessible by both synthetic pathways. Additionally, in compound 1, the phenoxy ligand was catalytically oxidized to ortho‐catechol, which was incorporated into the structure of 1 as a ligand that coordinates strongly to iron. All compounds feature the FeIII ion with a trigonal, bipyramidal environment, with coordination number 5.

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Structures of alkali and alkaline earth metal clusters with oxygen donor ligands

Cited by 77 publications

References 154 publications

From Alkaline Earth Ion Aggregates via Transition Metal Coordination Polymer Networks towards Heterometallic Single Source Precursors for Oxidic Materials

From Alkaline Earth Ion Aggregates via Transition Metal Coordination Polymer Networks towards Heterometallic Single Source Precursors for Oxidic Materials

Alkali metal halogenides coordination compounds with hexamethylenetetramine

Synthesis and Characterization of New Pentacoordinate Iron‐Based Aryloxide Complexes

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