# BENZENE FORMS HYDROGEN BONDS WITH WATER

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/18607

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 Title: BENZENE FORMS HYDROGEN BONDS WITH WATER Creators: Suzuki, S.; Green, P. G.; Bumgarner, R. E.; Suenram, R. D.; Lovas, F. J.; Dasgupta, S.; Goddard, W. A., III; Blake, Geoffrey A. Issue Date: 1993 Publisher: Ohio State University Abstract: Fully rotationally resolved spectra of three isotopic species of 1:1 clusters of benzene with water ($H_{2}O, D_{2}O$, and HDO) are fit to yield moments of inertia which demonstrate unambiguously that water is positioned above the benzene plane in nearly free internal rotation with both hydrogens pointing toward the $\pi$-cloud. Ab initio calculations $(MP2/6.31G^{\ast \ast}$ with basis set superposition error corrections) predict a binding energy of $D_{e}\gtrsim 1.78$ kilocalorie per mole. In both the experimental and theoretical structures, water is situated nearly 1 angstrom inside the van der Waals contacts of the monomers, a clear manifestation of hydrogen bond formation in this simple model of aqueous.$\pi$ electron interactions. Description: Author Institution: Division of Chemistry and Chemical Engineering, California Institute of Technology; Division of Applied Science and Engineering, California Institute of Technology; Department of Molecular Biotechnology, University of Washington; Molecular Physics Division, National Institute of Standards and Technology; Materials and Molecular Simulations Center, Beckman Institute, California Institute of Technology; Division of Geological and Planetary Sciences., California Institute of Technology URI: http://hdl.handle.net/1811/18607 Other Identifiers: 1993-TC-10