An insight into coordination ability of dicyanoimidazolato anions toward lithium in presence of acetonitrile. Crystal structures of novel lithium battery electrolyte salts

Maciej Dranka , Leszek Niedzicki , Marta Kasprzyk , Marek Marcinek , Władysław Wieczorek , Janusz Zachara

Abstract

New generation of imidazole-derived salts was characterized by single-crystal X-ray diffraction experiments for the first time. Herein, we present crystal structures of lithium salts containing original 4,5-dicyanoimidazolato anions substituted with trifluoromethyl, pentafluoroethyl and heptafluoropropyl groups. Studied compounds crystallize as acetonitrile-solvated dimers with four-coordinate lithium cations. Structures of crystalline materials were examined with regard to the fine properties of electrolyte providing valuable information about coordination ability of substituted 4,5-dicyanoimidazolato anions. Anions act as ditopic N donor ligands containing additional weak fluorine donor-centers. Donor nitrogen atoms of imidazole and cyano groups, show slightly lower basicity than electroneutral acetonitrile solvent molecules coordinated to lithium. Presence of bulky substituents does not alter crystal structure and close-packed arrangement is observed.
Author Maciej Dranka (FC / CICSST)
Maciej Dranka,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Leszek Niedzicki (FC / CICSST)
Leszek Niedzicki,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Marta Kasprzyk (FC / CICSST)
Marta Kasprzyk,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Marek Marcinek (FC / CICSST)
Marek Marcinek,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Władysław Wieczorek (FC / CICSST)
Władysław Wieczorek,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Janusz Zachara (FC / CICSST)
Janusz Zachara,,
- Chair Of Inorganic Chemistry And Solid State Technology
Journal seriesPolyhedron, ISSN 0277-5387
Issue year2013
Vol51
Pages111-116
Publication size in sheets0.5
Keywords in Englishlithium, n ligands, lithium-ion batteries, imidazoles, crystal structures
ASJC Classification2505 Materials Chemistry; 1604 Inorganic Chemistry; 1606 Physical and Theoretical Chemistry
DOIDOI:10.1016/j.poly.2012.12.022
URL http://www.sciencedirect.com/science/article/pii/S027753871300003X
Languageen angielski
File
polyhedron_2013.pdf 1.26 MB
Score (nominal)30
Score sourcejournalList
ScoreMinisterial score = 30.0, 17-08-2020, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 17-08-2020, ArticleFromJournal
Publication indicators Scopus Citations = 13; WoS Citations = 17; GS Citations = 10.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 0.899; WoS Impact Factor: 2013 = 2.047 (2) - 2013=2.068 (5)
Citation count*10 (2016-09-05)
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