Ionic association in poly(propylene oxide) complexed with alkali metal thiocyanate, perchlorate, and fluoroborate salts

Spectroscopic and structural studies of di-ureasils doped with lithium perchlorate

“…6(b) and Table 2). The 459 cm -1 band is assigned to "free" ClO 4 ions [35,36,37]. The existence of the two additional bands strongly supports the occurrence of C 2v symmetry and thus bidentate contact association between Li + and ClO 4 - [25,38].…”

Ionic conductivity and interfacial properties of nanochitin-incorporated polyethylene oxide–LiN(C2F5SO2)2 polymer electrolytes

“…6c). Similarly the C-H stretching band centered around 2900 cm −1 is quite sensitive to the lithium salt complexation like the bending and rocking modes around 1460 and 850 cm −1 , respectively [31][32][33][34]. In each case the bands are split into two or more components, becoming more resolved and the complex formation was identified.…”

“…The peaks at 1466, 1103, 956 and 841 cm −1 are assigned to -CH 2 -scissoring, -C-O-C-stretching, -CH 2 twisting and -CH 2 -wagging modes, respectively. Also, PEO exhibits -C-H stretching (between 2800 and 2935 cm −1 ) asymmetric stretching (1950-1970 cm −1 ), asymmetric bending (1450 cm −1 ), CH 2 scissoring (1465-1485 cm −1 ), C-O-O stretching (1250-950 cm −1 ), -CH 2 -twisting (991 cm −1 ) and -CH 2 -wagging (842 cm −1 ) [31][32][33]. The spectra of ␣-chitin (Fig.…”

Hydrogen bonding effect on the poly(ethylene oxide), phenolic resin, and lithium perchlorate–based solid‐state electrolyte

“…35,36 The above results indicate that strong hydrogen bonding exists between PEO and Ϫ ) mode of the lithium perchlorate (LiClO 4 ) is sensitive to the change of the local anionic environment. 14,[25][26][27] According to previously reported studies, [32][33][34] the component observed at about 624 cm Ϫ1 was assigned to the "free" anion, which does not interact directly with the lithium cation. Components at about 635 cm Ϫ1 have been attributed to contact ion pairs.…”