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0;color:#e2e2e2;text-decoration:underline;}#gs_alrt_m a:active{color:#f6aea9}</style><form action="" method="post" id="gs_alrt"><span id="gs_alrt_m"></span><span id="gs_alrt_h"></span><a id="gs_alrt_l" href="javascript:void(0)" class="gs_fm_s" data-fm="gs_alrt"></a></form><div id="gs_bdy"><div id="gs_bdy_sb" role="navigation"><div id="gs_bdy_sb_in"><div id="gsc_sb_ui" class="gs_bdy_sb_sec"><a href="/citations?user=lnkt9rgAAAAJ&hl=en" class="gs_ibl"><span class="gs_rimg gs_pp_sm"><img alt="michele parrinello" sizes="56px" src="/citations/images/avatar_scholar_56.png" srcset="/citations/images/avatar_scholar_56.png 56w,/citations/images/avatar_scholar_128.png 128w" width="56" height="56"></span></a><div><a href="/citations?user=lnkt9rgAAAAJ&hl=en">michele parrinello</a></div></div></div></div><div id="gs_bdy_ccl" role="main"><div id="gsc_vcpb" data-edit-link="/citations?view_op=edit_citation&hl=en&user=lnkt9rgAAAAJ&citation_for_view=lnkt9rgAAAAJ:W7OEmFMy1HYC&citation_for_view=lnkt9rgAAAAJ:W7OEmFMy1HYC&back_view_op=view_citation"><form method="post" id="gsc_vcpb_btns" action="/citations?view_op=view_citation&hl=en"><input type="hidden" name="xsrf" value="ADIE8skAAAAAZ0NpVEruLcCwfCRN_6Bq9BO-AsM"><input type="hidden" name="s" value="lnkt9rgAAAAJ:W7OEmFMy1HYC"><input type="hidden" name="continue" value="/citations?view_op=list_works&hl=en&hl=en&user=lnkt9rgAAAAJ"></form><div id="gsc_oci_title_wrapper"><div id="gsc_oci_title"><a class="gsc_oci_title_link" href="https://www.science.org/doi/abs/10.1126/science.275.5301.817" data-clk="hl=en&sa=T&ei=1BdCZ9j8KpuDy9YPs-PngA4">On the quantum nature of the shared proton in hydrogen bonds</a></div></div><div id="gsc_oci_table"><div class="gs_scl"><div class="gsc_oci_field">Authors</div><div class="gsc_oci_value">Mark E Tuckerman, Dominik Marx, Michael L Klein, Michele Parrinello</div></div><div class="gs_scl"><div class="gsc_oci_field">Publication date</div><div class="gsc_oci_value">1997/2/7</div></div><div class="gs_scl"><div class="gsc_oci_field">Journal</div><div class="gsc_oci_value">Science</div></div><div class="gs_scl"><div class="gsc_oci_field">Volume</div><div class="gsc_oci_value">275</div></div><div class="gs_scl"><div class="gsc_oci_field">Issue</div><div class="gsc_oci_value">5301</div></div><div class="gs_scl"><div class="gsc_oci_field">Pages</div><div class="gsc_oci_value">817-820</div></div><div class="gs_scl"><div class="gsc_oci_field">Publisher</div><div class="gsc_oci_value">American Association for the Advancement of Science</div></div><div class="gs_scl"><div class="gsc_oci_field">Description</div><div class="gsc_oci_value" id="gsc_oci_descr"><div class="gsh_small"><div class="gsh_csp">The relative influence of thermal and quantum fluctuations on the proton transfer properties of the charged water complexes H<sub>5</sub>O<sub>2</sub><sup>+</sup> and H<sub>3</sub>O<sub>2</sub><sup>−</sup> was investigated with the use of ab initio techniques. These small systems can be considered as prototypical representatives of strong and intermediate-strength hydrogen bonds. The shared proton in the strongly hydrogen bonded H<sub>5</sub>O<sub>2</sub><sup>+</sup> behaved in an essentially classical manner, whereas in the H<sub>3</sub>O<sub>2</sub><sup>−</sup> low-barrier hydrogen bond, quantum zero-point motion played a crucial role even at room temperature. This behavior can be traced back to a small difference in the oxygen-oxygen separation and hence to the strength of the hydrogen bond.</div></div></div></div><div class="gs_scl"><div class="gsc_oci_field">Total citations</div><div class="gsc_oci_value"><div style="margin-bottom:1em"><a href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5">Cited by 859</a></div><div id="gsc_oci_graph_wrapper"><div id="gsc_oci_graph" style="width:922px;"><div id="gsc_oci_graph_x"></div><div id="gsc_oci_graph_bars"><span class="gsc_oci_g_t" style="left:0px">1997</span><span class="gsc_oci_g_t" style="left:33px">1998</span><span class="gsc_oci_g_t" style="left:66px">1999</span><span class="gsc_oci_g_t" style="left:99px">2000</span><span class="gsc_oci_g_t" style="left:132px">2001</span><span class="gsc_oci_g_t" style="left:165px">2002</span><span class="gsc_oci_g_t" style="left:198px">2003</span><span class="gsc_oci_g_t" style="left:231px">2004</span><span class="gsc_oci_g_t" style="left:264px">2005</span><span class="gsc_oci_g_t" style="left:297px">2006</span><span class="gsc_oci_g_t" style="left:330px">2007</span><span class="gsc_oci_g_t" style="left:363px">2008</span><span class="gsc_oci_g_t" style="left:396px">2009</span><span class="gsc_oci_g_t" style="left:429px">2010</span><span class="gsc_oci_g_t" style="left:462px">2011</span><span class="gsc_oci_g_t" style="left:495px">2012</span><span class="gsc_oci_g_t" style="left:528px">2013</span><span class="gsc_oci_g_t" style="left:561px">2014</span><span class="gsc_oci_g_t" style="left:594px">2015</span><span class="gsc_oci_g_t" style="left:627px">2016</span><span class="gsc_oci_g_t" style="left:660px">2017</span><span class="gsc_oci_g_t" style="left:693px">2018</span><span class="gsc_oci_g_t" style="left:726px">2019</span><span class="gsc_oci_g_t" style="left:759px">2020</span><span class="gsc_oci_g_t" style="left:792px">2021</span><span class="gsc_oci_g_t" style="left:825px">2022</span><span class="gsc_oci_g_t" style="left:858px">2023</span><span class="gsc_oci_g_t" style="left:891px">2024</span><a href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5&as_ylo=1997&as_yhi=1997" class="gsc_oci_g_a" style="left:5px;height:14px;top:43px;z-index:28"><span class="gsc_oci_g_al">11</span></a><a href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5&as_ylo=1998&as_yhi=1998" class="gsc_oci_g_a" style="left:38px;height:49px;top:8px;z-index:27"><span class="gsc_oci_g_al">38</span></a><a href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5&as_ylo=1999&as_yhi=1999" class="gsc_oci_g_a" style="left:71px;height:47px;top:10px;z-index:26"><span class="gsc_oci_g_al">36</span></a><a href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5&as_ylo=2000&as_yhi=2000" class="gsc_oci_g_a" 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href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5&as_ylo=2021&as_yhi=2021" class="gsc_oci_g_a" style="left:797px;height:35px;top:22px;z-index:4"><span class="gsc_oci_g_al">27</span></a><a href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5&as_ylo=2022&as_yhi=2022" class="gsc_oci_g_a" style="left:830px;height:21px;top:36px;z-index:3"><span class="gsc_oci_g_al">16</span></a><a href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5&as_ylo=2023&as_yhi=2023" class="gsc_oci_g_a" style="left:863px;height:32px;top:25px;z-index:2"><span class="gsc_oci_g_al">25</span></a><a href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5&as_ylo=2024&as_yhi=2024" class="gsc_oci_g_a" style="left:896px;height:27px;top:30px;z-index:1"><span class="gsc_oci_g_al">21</span></a></div></div></div></div></div><div class="gs_scl"><div class="gsc_oci_field">Scholar articles</div><div class="gsc_oci_value"><div class="gsc_oci_merged_snippet"><div><a href="/scholar?oi=bibs&cluster=3838344471226448202&btnI=1&hl=en">On the quantum nature of the shared proton in hydrogen bonds</a></div><div>ME Tuckerman, D Marx, ML Klein, M Parrinello - Science, 1997</div><div><a class="gsc_oms_link" href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cites=3838344471226448202&as_sdt=5">Cited by 859</a> <a class="gsc_oms_link" href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&q=related:SnkJzfWJRDUJ:scholar.google.com/">Related articles</a> <a class="gsc_oms_link" href="https://scholar.google.co.in/scholar?oi=bibs&hl=en&cluster=3838344471226448202">All 11 versions</a> </div></div></div></div></div></div></div></div><div id="gs_ftr_sp" role="presentation"></div><div id="gs_ftr" class="gs_md_rmb" role="contentinfo"><div id="gs_ftr_rt"><a href="//www.google.co.in/intl/en/policies/privacy/">Privacy</a><a 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