Fluorescence-dip infrared spectroscopy of the tropolone-H2O complex
J. Chem. Phys. 105, 2605 (1996); doi:10.1063/1.472125
Issue Date: 15 August 1996
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Fluorescence dip infrared spectroscopy (FDIRS) is used to probe the effect of a solvent water molecule on intramolecular H-atom tunneling in tropolone. As with the bare molecule discussed in paper I, the FDIR spectrum of the tropolone-H2O complex is recorded in the OH and CH stretch regions. Three OH stretch fundamentals are observed in the spectrum, and can be assigned nominally to a free OH stretch of the water molecule (3724 cm1), a hydrogen bonded OH stretch of water (3506 cm1), and the OH stretch of tropolone (~3150 cm1). The breadth and complexity of the bands is highly mode specific. The free OH stretch transition is sharp (1.8 cm1 FWHM) and has weak combination bands built on it at +73 and +1600 cm1. The former is assigned to a combination band with the in-plane bending mode of the tropolone-H2O hydrogen bond, while the latter is the free OH/intramolecular water bend combination band. The water hydrogen-bonded OH fundamental is also a sharp transition which, after correction for the decreased infrared power at its frequency, is clearly the strongest transition in the spectrum. It is flanked by three close-lying satellite bands 13, 23, and 34 cm1 above it, and also supports a weak combination band at +69 cm1 due to the in-plane intermolecular bending mode. The tropolone OH absorption is in the same frequency region as in the bare molecule, but broadened to over 100 cm1 in TrOHH2O. Distinct substructure in the band is present, with spacings reminiscent of those in the water H-bonded OH stretch region. Ab initio calculations on tropolone-H2O are carried out at both the MP2 and Becke3LYP levels of theory. Two isomers with similar binding energies and vibrational frequencies are identified. In one isomer (isomer I), the water molecule serves as a hydrogen-bonded bridge between the tropolone OH and keto groups. In the other (isomer II), the water molecule is exterior to the tropolone and hydrogen bonded to the keto oxygen. The experimental evidence does not conclusively distinguish between these two possibilities, though the exterior structure seems somewhat more in keeping with the data as a whole. ©1996 American Institute of Physics.
| History: | Received 13 March 1996; accepted 7 May 1996 |
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KEYWORDS and PACS
TROPONES,
WATER,
FLUORESCENCE SPECTROSCOPY,
INFRARED SPECTRA,
HYDROXYL RADICALS,
BINDING ENERGY,
SOLVENT EFFECTS,
HYDROGEN BONDS,
AB INITIO CALCULATIONS,
VIBRONIC STATES
- 33.20.Ea
Molecular properties and interactions with photons Molecular spectra Infrared spectra - 33.50.Dq
Molecular properties and interactions with photons Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion) Fluorescence and phosphorescence spectra - 31.70.Dk
Electronic structure of atoms, molecules and their ions: theory Effects of atomic and molecular interactions on electronic structure Environmental and solvent effects - YEAR: 1996
RELATED DATABASES
PUBLICATION DATA
0021-9606 (print)
1089-7690 (online)
REFERENCES (28)
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- Y. Tomioka, M. Ito, and N. Mikami,
J. Phys. Chem. 87, 4401 (1983 ). - H. Sekiya, H. Hamabe, N. Nakano, H. Ujita, N. Nakano, and Y. Nishimura, Chem. Phys. Lett. (in press).
- A. Mitsuzuka, A. Fujii, T. Ebata, and N. Mikami, J. Chem. Phys. 105, 2618 (1996), following paper.
- R. L. Redington and C. W. Bock,
J. Phys. Chem. 95, 10284 (1991 ). - R. K. Frost, F. Hagemeister, C. A. Arrington, and T. S. Zwier, J. Chem. Phys. 105, 2595 (1996), preceding paper.
- F. A. Ensminger, J. Plassard, T. S. Zwier, and S. Hardinger, J. Chem. Phys. 99, 8341 (1993).
- F. A. Ensminger, J. Plassard, T. S. Zwier, and S. Hardinger, J. Chem. Phys. 102, 5246 (1995).
- Z. S. Huang and R. E. Miller, J. Chem. Phys. 91, 6613 (1989).
- F. Huisken, M. Kaloudis, and A. Kulcke, J. Chem. Phys. 104, 17 (1996).
- R. N. Pribble and T. S. Zwier,
Science 265, 7579 (1994 ). - R. N. Pribble and T. S. Zwier,
Faraday Discuss. 97, 229 (1994 ). - T. S. Zwier, Annu. Rev. Phys. Chem. (1996), Vol. 47, p. 205.
- S. Djafari, G. Lembach, H.-D. Barth, and B. Brutschy, Z. Phys. Chem. (in press).
- T. Ebata, T. Watanabe, and N. Mikami,
J. Phys. Chem. 99, 5761 (1995 ). - GAUSSIAN 94, Revision A.1, M. J. Frisch, G. W. Trucks, H. B. Schlegel, P. M. W. Gill, B. G. Johnson, M. A. Robb, J. R. Cheeseman, T. A. Keith, G. A. Petersson, J. A. Montgomery, K. Raghavachari, M. A. Al-Laham, V. G. Zakrzewski, J. V. Ortiz, J. B. Foresman, J. Cioslowki, B. B. Stefanov, A. Nanayakkara, M. Challacombe, C. Y. Peng, P. Y. Ayala, W. Chen, M. W. Wong, J. L. Andres, E. S. Replogle, R. Gomperts, R. L. Martin, D. J. Fox, J. S. Binkley, D. J. Defrees, J. Baker, J. P. Stewart, M. Head-Gordon, C. Gonzalez, and J. A. Pople, Gaussian, Inc., Pittsburgh, PA, 1995.
- C. Möller, M. S. Plesset,
Phys. Rev. 46, 618 (1934 );
R. J. Bartlett, - (a) A. D. Becke, J. Chem. Phys. 98, 5648 (1993);
- S. F. Boys, F. Bernardi,
Mol. Phys. 19, 553 (1970 ). - (a) K. Kim, K. D. Jordan, and T. S. Zwier,
J. Am. Chem. Soc. 116, 11568 (1994 );
(b) S. Y. Fredericks, K. D. Jordan, and T. S. Zwier, J. Phys. Chem. (in press). - D. Forney, M. E. Jacox, and W. E. Thompson,
J. Mol. Spectrosc. 157, 479 (1993 ). - E. F. Breheret and M. M. Martin, J. Lumin. 17, 49 (1978).
- (a) M. Pohl, M. Schmitt, K. Kleinermanns, J. Chem. Phys. 94, 1717 (1991);
- G. C. Pimentel and A. L. McClellan, The Hydrogen Bond (Freeman, San Francisco, 1960).
- H. Sekiya, Y. Nagashima, and Y. Nishimura, J. Chem. Phys. 92, 5761 (1990).
- R. L. Redington, Y. Chen, G. J. Scherer, and R. W. Field, J. Chem. Phys. 88, 627 (1988).
- (a) A. C. Legon and D. J. Millen,
Chem. Rev. 86, 635 (1986 ), and references therein;
(b) D. J. Millen, - N. Sheppard, in Hydrogen Bonding, edited by D. Hadzi (Pergamon, New York, 1959), p. 85.
- R. N. Pribble, A. W. Garrett, K. Haber, and T. S. Zwier, J. Chem. Phys. 103, 531 (1995).
(c) C. Lee, W. Yang, and R. G. Parr, Phys. Rev. B 37, 785 (1988).








