TY - JOUR
T1 - First observation of ionic π-hydrogen bonds; vibrational spectroscopy of dihydrated naphthalene anion (Nph-(H2O)2)
AU - Kawamata, Hiroshi
AU - Maeyama, Toshihiko
AU - Mikami, Naohiko
N1 - Funding Information:
H.K. expresses his gratitude for JSPS Research Fellowship for Young Scientists. The authors wish to acknowledge fruitful discussions with Prof. R. Weinkauf and the encouragement by Prof. M.A. Johnson. We are also grateful to Drs. T. Ebata, S. Wategaonkar, A. Fujii, and H. Ishikawa for stimulating conversations. This work is supported by a Grant-in-Aid for Scientific Research from Japan Society for the Promotion of Science.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/3/14
Y1 - 2003/3/14
N2 - Hydrated structure of Nph-(H2O)2 was investigated using infrared (IR) spectroscopy. Among OH stretching vibrations, three π-hydrogen bonds to anionic naphthalene ring, namely ionic π-hydrogen (iπH) bonds, and an interwater hydrogen bond were observed. It allowed us to elucidate the geometrical structure of Nph-(H2O)2. The unstable naphthalene bare anion was stabilized through the iπH bonds with the water dimer on its ring, forming the one-sided structure. Besides, the intensity of the aromatic CH stretching modes was found to be enhanced upon the electron attachment without significant lowering of their frequencies.
AB - Hydrated structure of Nph-(H2O)2 was investigated using infrared (IR) spectroscopy. Among OH stretching vibrations, three π-hydrogen bonds to anionic naphthalene ring, namely ionic π-hydrogen (iπH) bonds, and an interwater hydrogen bond were observed. It allowed us to elucidate the geometrical structure of Nph-(H2O)2. The unstable naphthalene bare anion was stabilized through the iπH bonds with the water dimer on its ring, forming the one-sided structure. Besides, the intensity of the aromatic CH stretching modes was found to be enhanced upon the electron attachment without significant lowering of their frequencies.
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U2 - 10.1016/S0009-2614(03)00118-0
DO - 10.1016/S0009-2614(03)00118-0
M3 - Article
AN - SCOPUS:0037436810
SN - 0009-2614
VL - 370
SP - 535
EP - 541
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -