Preparation of potential macroligands for alkali-metal ions using open-chain polyether carboxylic acids and tricarbonylbis(triphenylphosphine)ruthenium. X-Ray crystal structure of dicarbonylbis[1-(o-carboxymethoxyphenoxy)-2-(o-hydroxyphenoxy)ethanato(1–)]bis(triphenylphosphine)ruthenium(II)

1984 ◽  
pp. 739-742 ◽  
Author(s):  
David L. Hughes ◽  
Jonathan N. Wingfield
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Metal Ions ◽  
Carboxylic Acids ◽  
Alkali Metal Ions ◽  
Open Chain ◽  
X Ray

The influence of alkali-metal ions on the molecular and supramolecular structure of manganese(II) complexes with tetrachlorophthalate ligands

2015 ◽  
Vol 70 (1) ◽  
pp. 39-45 ◽  
Author(s):  
Hong-Dan Wang ◽  
Ming-Yang He ◽  
Qun Chen ◽  
Sheng-Chun Chen
Keyword(s):  
Alkali Metal ◽  
Metal Ions ◽  
Supramolecular Structure ◽  
Critical Role ◽  
Alkali Metal Ions ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Space Groups ◽  
Dinuclear Structure

AbstractIn our efforts to investigate the influence of alkali-metal ions on the formation of metal complexes with polyhalogen-substituted benzenedicarboxylates, two manganese(II) complexes of tetrachlorophthalic acid (1,2-H2BDC-Cl4), [Mn2(1,2-BDC-Cl4)2(H2O)9]·H2O (1) and [MnK2(1,2-BDC-Cl4)2(H2O)4]n (2), were synthesized and structurally characterized. Single-crystal X-ray diffraction studies have revealed that complexes 1 and 2 crystallize in space groups P1̅ and Pbcn, respectively. Complex 1 shows a discrete dinuclear structure, while complex 2 features a two-dimensional heterometallic framework containing rare Mn–O–K linkages. The results clearly suggest that the introduction of alkali metal ions does play a critical role in the construction of complexes 1 and 2 with distinct dimensionality and connectivity. Their spectroscopic, thermal, and fluorescence properties have also been studied briefly.

scholarly journals Alkali Metal Intercalation in Curved Carbon Networks: X-Ray Structural Studies

2014 ◽  
Vol 70 (a1) ◽  
pp. C986-C986
Author(s):  
Natalie Sumner ◽  
Sarah Spisak ◽  
Alexander Zabula ◽  
Alexander Filatov ◽  
Andrey Rogachev ◽  
...  
Keyword(s):  
Energy Storage ◽  
Alkali Metal ◽  
Metal Ions ◽  
Anode Materials ◽  
Materials Science ◽  
Polyaromatic Hydrocarbons ◽  
Earth Metal ◽  
Alkali Metal Ions ◽  
X Ray ◽  
Carbon Networks

The intercalation of alkali metal ions into carbon-based aromatic systems is of great interest in materials science due to the increased need for stable anode materials with high capacity of energy storage. Currently, graphite, a sp2-hybirdized carbon network, is the key anode component in rechargeable Li-ion batteries. Carbon allotropes with nonplanar π-surfaces, ranging from fullerenes to nanotubes, are now under investigation as prospective anode materials. The curved carbon networks of fullerenes and nanotubes are often modeled by open bowl-shaped polyaromatic hydrocarbons, such as the smallest curved fullerene fragment, corannulene (C20H10). One of the most fascinating properties of such bowl-shaped polyarenes and fullerenes is their ability to reversibly uptake and delocalize extra electrons upon multi-electron reduction without significant rearrangement and deformation of their carbon framework [1,2]. Notably, the anode material fabricated from corannulene shows a high reversible lithium capacity (602 mAh/g). This is almost twice as high as the theoretical capacity of the commonly used fully lithiated planar graphite material (LiC6, 372 mAh/g). In our work, we target the X-ray structural elucidation of metal intercalation patterns of carbon-rich curved polyarenes with light alkali metal ions, such as Li and Na, and compare those with extended planar polyaromatic systems. Recently, we expanded this study to the light alkaline earth metal, Mg, as its atomic radius is very close to that of Li. In addition, magnesium is cost effective and abundant, and thus presents great interest in the emerging energy storage technologies.

Single crystal X-ray structure of Lawsone anion: Evidence for coordination of alkali metal ions and formation of naphthosemiquinone radical in basic media

2012 ◽  
Vol 1010 ◽  
pp. 38-45 ◽  
Author(s):  
Sunita Salunke-Gawali ◽  
Laxmi Kathawate ◽  
Yogesh Shinde ◽  
Vedavati G. Puranik ◽  
Thomas Weyhermüller
Keyword(s):  
Alkali Metal ◽  
Metal Ions ◽  
Single Crystal ◽  
Alkali Metal Ions ◽  
X Ray

scholarly journals Synthesis and crystal structure of two manganese-based 12-metallacrown-4 complexes: Na2(3-chlorobenzoate)2[12-MCMn(III)N(shi)-4](DMF)6 and MnNa(3-chlorobenzoate)3[12-MCMn(III)N(shi)-4](DMF)(H2O)4·4DMF·0.72H2O

2020 ◽  
Vol 76 (6) ◽  
pp. 848-856
Author(s):  
Curtis M. Zaleski ◽  
Matthias Zeller
Keyword(s):  
Crystal Structure ◽  
Transition Metal ◽  
Alkali Metal ◽  
Metal Ions ◽  
Axial Direction ◽  
Alkali Metal Ions ◽  
Convex Side ◽  
Central Cavity ◽  
Synthesis And Crystal Structure ◽  
Whole Molecule Disorder

Similar synthetic schemes yield two different metallacrown (MC) complexes: bis(μ-3-chlorobenzoato)hexakis(dimethylformamide)tetrakis(μ4-N,2-dioxidobenzene-1-carboximidato)tetramanganese(III)disodium(I), [Mn4Na2(C7H4ClO2)2(C7H4NO3)4(C3H7NO)6] or Na2(3-chlorobenzoate)2[12-MCMn(III)N(shi)-4](DMF)6, 1, and tetra-μ-aqua-tris(μ-3-chlorobenzoato)(dimethylformamide)tetrakis(μ4-N,2-dioxidobenzene-1-carboximidato)pentamanganese(III)sodium(I) dimethylformamide tetrasolvate 0.72-hydrate, [Mn5Na(C7H4ClO2)3(C7H4NO3)4(C3H7NO)(H2O)4]·4C3H7NO·0.718H2O or MnNa(3-chlorobenzoate)3[12-MCMn(III)N(shi)-4](DMF)(H2O)4·4DMF·0.72H2O, 2, where shi3− is salicylhydroximate and DMF is N,N-dimethylformamide. Both complexes have the same framework consisting of four MnIII ions in the MC ring and four shi3− ligands, resulting in an overall square-shaped molecule. The MnIII ions are either five- or six-coordinate with elongated bond lengths in the apical or axial direction, respectively. The structure of 1 is nearly planar, and the MC binds two Na+ ions on opposite faces of the MC central cavity. The 3-chlorobenzoate anions also bind on opposite faces of the MC and form bridges between the central Na+ ions and the ring MnIII ions. For 1 the metallacrown molecule, except for the central Na+ ion, exhibits whole molecule disorder over two sets of sites. Both moieties are centrosymmetric and are related to each other by a pseudo-mirror operation with opposite sense of rotation around the Na...Na axis. The occupancy ratio of the main disorder of the metallacrown molecules and 3-chlorobenzoate anions refined to 0.9276 (9):0.0724 (9). The structure of 2 is slightly domed, and the MC binds both an MnII ion and an Na+ ion in the MC central cavity. The MnII ion is located on the convex side of the MC, while the Na+ ion binds to the concave side. Complex 2 represents the first instance of a [12-MCMn(III)N(shi)-4] molecule binding both 3d transition metal and alkali metal ions in the central cavity. In addition, three 3-chlorobenzoate anions bind on the convex side of the MC and connect the MnII ion to three of the ring MnIII ions.

Sign in / Sign up

Export Citation Format

Share Document