Cooperative Effects of Cation Size and Variable Coordination Modes of Te4+on the Frameworks of New Alkali Metal Indium Tellurites, NaIn(TeO3)2, KIn(TeO3)2, RbInTe3O8, and CsInTe3O8

2014 ◽  
Vol 53 (20) ◽  
pp. 11328-11334 ◽  
Author(s):  
Su-whan Bae ◽  
Choong-Yeol Kim ◽  
Dong Woo Lee ◽  
Kang Min Ok
Keyword(s):  
Alkali Metal ◽  
Coordination Modes ◽  
Cooperative Effects ◽  
Cation Size ◽  
Variable Coordination

The Influence of Alkali Metal Cation Size on the Formation and Dissociation of Crown Ether Fullerene Dimers in Electrospray Mass Spectrometry

2015 ◽  
Vol 120 (1) ◽  
pp. 786-792 ◽  
Author(s):  
Ina D. Kellner ◽  
Marc S. von Gernler ◽  
Manolis D. Tzirakis ◽  
Michael Orfanopoulos ◽  
Thomas Drewello
Keyword(s):  
Mass Spectrometry ◽  
Crown Ether ◽  
Alkali Metal ◽  
Metal Cation ◽  
Electrospray Mass Spectrometry ◽  
Alkali Metal Cation ◽  
Fullerene Dimers ◽  
Cation Size

Alkali-Metal Pyrazolate Complexes with Unusual Pyrazolate Coordination Modes and Pseudocubane Motifs

2007 ◽  
Vol 2 (4) ◽  
pp. 539-550 ◽  
Author(s):  
Samar Beaini ◽  
Glen B. Deacon ◽  
Anja P. Erven ◽  
Peter C. Junk ◽  
David R. Turner
Keyword(s):  
Alkali Metal ◽  
Coordination Modes

A cation size effect on the framework structures in ABi2SeO3F5 (A = K and Rb): first examples of alkali metal bismuth selenite fluorides

2018 ◽  
Vol 47 (18) ◽  
pp. 6598-6604 ◽  
Author(s):  
Shuangshuang Shi ◽  
Min Luo ◽  
Chensheng Lin ◽  
Ning Ye
Keyword(s):  
Alkali Metal ◽  
Size Effect ◽  
Hydrothermal Method ◽  
Cation Size

First examples of alkali metal bismuth selenite fluorides, ABi2SeO3F5 (A = K, Rb), have been synthesized through a soft hydrothermal method.

scholarly journals Coordination modes of novel 4,5-dicyanoimidazolato ligand in alkali metal salts

2014 ◽  
Vol 70 (a1) ◽  
pp. C650-C650
Author(s):  
Maciej Dranka ◽  
Janusz Zachara
Keyword(s):  
Alkali Metal ◽  
Imidazole Ring ◽  
Ionic Species ◽  
Electron System ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Promising Alternative ◽  
Charge Delocalization ◽  
Coordination Modes ◽  
Solvent Molecules

As the use of lithium batteries became more and more wide-spread, the importance of the research on novel salts for batteries' electrolytes grew more and more important. The focus has been put on designing novel lithium and sodium salts which dissociate well in aprotic solvents and are electrochemically and thermally stable. Salts with heteroaromatic anions such as 2-trifluoromethane-4,5-dicyanoimidazolate (LiTDI) [1,2] are a promising alternative for the salts commonly used as charge carriers in lithium and sodium batteries. The class of new 4,5-dicyanoimidazolates ligands is based on N-heterocyclic five-membered ring substituted with nitrile group. Such a type of anions possesses four nitrogen donor centers able to coordinate cation, and is characterized by charge delocalization, both on imidazole ring and cyano substituents resulting in extended π electron system. In solid as well as liquid electrolytes one should expect the co-existence of a variety of ionic species, such as iosolated anions and cations solvated by solvent molecules, ionic pairs, for which the coordination sphere of cations is completed with solvent molecules, as well as dimers and aggregates with varied stoichiometry. The observed degree of aggregation depends mostly on the coordination properties of anions, their ability to form hydrogen bonds and their compatibility with the acidic properties of cations. The increase of the salt concentration should result in association process and the emergence of higher aggregates, up to polymeric systems, possessing structure of chains, ribbons, layers or networks. In order to define the coordination ability of the class of new ligands, we examined their organization modes in the alkali metal salts and have found a wide variety of mentioned motifs. Discovering and understanding the phenomena related to the organization of such systems in the solid state is crucial for the elaboration of novel electrolytes and should give information about cation and anion coordination in electrolytes. Our single-crystal diffraction studies have shown that new salts comprising 4,5-dicyano-2-(trifluoromethyl)imidazolato anion are interesting from the point of view of their crystalline structure, offering variety of possible coordination modes and are, therefore, worthy of examination.

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