Electronic spectra of ion pairs of picrate ion withalkali-metal polyether complexes in non-aqueoussolvents
Electronic spectra of ion pairs of picrate ion withalkali-metal polyether complexes in non-aqueoussolvents
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非水溶剂中苦味酸根离子与碱金属聚醚配合物离子对的电子光谱
DOI:
10.1039/a700056a
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发表时间:
1997
期刊:
影响因子:
--
通讯作者:
T. Komatsuzaki
中科院分区:
文献类型:
--
作者:
K. Sawada;Fumie Chigira;K. Satoh;T. Komatsuzaki
Absorption spectra of ion pairs of picrate ion with the
alkali-metal ion complexes of poly(oxyethylene)monododecyl ethers
[C
12
H
25
(OC
2
H
4
)
n
OH, DEOn; (n=4, 6 and 8)] and
tetraalkylammonium ions, have been measured in water-saturated
non-polar solvents, 1,2-dichloroethane (1,2-DCE) and xylene (Xy). The
wavenumber of absorption maxima (ν
max
) of the ion pairs
in 1,2-DCE was evaluated by taking into consideration the dissociation
of the ion pairs. Those values show a good correlation with the
reciprocal of the interionic distance of the ion pair except for the
hydrated lithium complexes and with the ν
max
in Xy. The
values of the ν
max
in various non-polar solvents were
determined for the ion pair of the DEO6–potassium ion complex.
These values were inversely correlated with the E
T
value, which is the parameter of solvent polarity. The electronic
structures and ion pair structures of picrate ion forming the ion pair
with alkali-metal ion complexes were scrutinized by using ab
initio calculations. The results obtained experimentally and
theoretically revealed: (i) that the change in the electronic
excitation energy depends on the interionic distance between the
picrate ion and the counter cation in the ion pair and (ii) that the
interaction between the picrate ion and the counter cation is
predominantly electrostatic.
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
Mizuki Toita; Kotaro Morita;Naoki Hirayama;江口綾乃,岡村浩之,杉田 剛,上田祐生,森田耕太郎,下条晃司郎,長縄弘親,平山直紀;丸岡由佳,森田耕太郎,平山直紀;戸井田美月,森田耕太郎,平山直紀;鳥羽優美香,森田耕太郎,平山直紀;平山直紀;戸井田美月,森田耕太郎,平山直紀;戸井田美月,森田耕太郎,平山直紀;鳥羽優美香,森田耕太郎,平山直紀;丸岡由佳,森田耕太郎,平山直紀;丸岡由佳,森田耕太郎,平山直紀;鳥羽優美香,森田耕太郎,平山直紀;平山直紀
通讯作者:
平山直紀