\begin{filecontents}{FigEx08.eps}
%!PS-Adobe-3.0 EPSF-3.0

    (body of the PostScript file suppressed)

%%Pages: 1
\end{filecontents}

%% *-----------------------------------------------------------------------------------------*

\documentclass[11pt]{article}

\usepackage{hrms}
\usepackage{epsfig}

%% *-----------------------------------------------------------------------------------------*

\title{DIFFERENT NON-COVALENT INTERACTION TYPES AND GEOMETRIES FOR SIMILAR COMPLEXES OF PHENYLACETALDEHYDE--H$_2{O}$ AND PHENYLACETALDEHYDE--H$_2{S}$}

\author{\underline{\FirstName M. \LastName LI,}
  \FirstName W. \LastName LI, \FirstName J.-U. \LastName GRABOW, \FirstName A. \LastName LESARRI}
  
\address{Institut f\"ur Physikalische Chemie und Elektrochemie, Leibniz Universit\"at Hannover, Hannover 30167, (Germany);
M. Li: meng.li@pci.uni-hannover.de}


%% *-----------------------------------------------------------------------------------------*

%% The macros below will change the page head and foot.
%% Please, do not modify the content of the \fancyhead macro nor the \fancyfoot line.
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhead[C]{{\footnotesize \textit{HRMS, 28th Colloquium, Dijon, France,
  Aug. 28 - Sept. 1, 2023}}}
\fancyfoot[C]{}
\renewcommand{\headrulewidth}{0.6pt}
\renewcommand{\footrulewidth}{0.6pt}

%% WARNING: Make sure that this package comes LAST since it re-defines many LaTeX macros.
\usepackage[colorlinks=true,urlcolor=blue,linkcolor=blue,citecolor=blue]{hyperref}
\voffset -.65 cm

%% *-----------------------------------------------------------------------------------------*

\category {4,11}
\begin{document}

\maketitle
\index{Methane}
\index{Methane|Icosad}

Molecules with aromatic rings are extremely versatile in exercising non-covalent interactions (NCIs), making them prototype systems to study $\pi$--$\pi$ 
stacking,\footnote{\href{https://dx.doi.org/10.1021/acs.jpclett.2c02807}{doi:acs.jpclett.2c02807}, W. Du, Y. Zheng, X. Wang, J. Lei, H. Wang, X. Tian, S. Zou, J. Bloino, Q. Gou, W. Caminati and J.--U. Grabow,  {\it J. Phys. Chem. Lett.\/}, {\bf 13} (42), 9934--9940 (2022).\label{HQ}} lone pair...$\pi$--hole interactions,\footnote{\href{https://dx.doi.org/10.1021/acs.jpclett.6b00473}{doi:acs.jpclett.6b00473}, C. Calabrese, Q. Gou, A. Maris, W. Caminati and S. Melandri, {\it J. Phys. Chem. Lett.\/}, {\bf 7} (8), 1513--1517 (2016).\label{HQ}} and H...$\pi$ interactions,\footnote{\href{https://dx.doi.org/10.1021/jacs.2c11732}{doi:jacs.2c11732}, W. Li, C. P\'erez, A. L. Steber, M. Schnell, D. Lv, G. Wang, X. Zeng, and M. Zhou, {\it J. Am. Chem. Soc.\/}, {\bf 145} (7), 4119--4128 (2023).\label{HQ}} etc. Phenylacetaldehyde (PAA) is the derivative of the simplest aromatic aldehyde (benzaldehyde) towards a longer carbon chain. Thus, there are more probabilities for its bonding with other molecules by different NCI sites due to its increased flexibility.

The chalcogens O and S, being homologues next to each other in their main group of the periodic system, show some similar but indeed varying physical and chemical properties. Therefore, H$_2{O}$ and H$_2{S}$ can serve as simple model molecules to study how such property changes effect NCI types and, consequently, the geometries of their respective complexes formed between them and identical partner molecules.

E.g., it had been reported that the geometry is similar in the case of benzene--H$_2{O}$\footnote{\href{https://dx.doi.org/10.1021/acs.jpca.9b01497}{doi:acs.jpca.9b01497}, J. Andersen, R. W. Larsen, J. Ceponkus, P. Uvdal and B. Nelander, {\it J. Phys. Chem. A.\/}, {\bf 124} (3), 513--519 (2019).\label{HQ}} and benzene--H$_2{S}$ complexes,\footnote{\href{https://dx.doi.org/10.1021/acs.jpca.9b02199}{doi:acs.jpca.9b02199}, D. Wang, P. Chopra, S. Wategaonkar and A. Fujii, {\it J. Am. Chem. Soc.\/}, {\bf 145} (7), 4119--4128 (2023).\label{HQ}} but very different in phenylacetylene--H$_2{O}$\footnote{\href{https://dx.doi.org/10.1039/C1CP20690G}{doi:C1CP20690G}, M. Goswami and E. Arunan,  {\it Phys. Chem. Chem. Phys.\/}, {\bf 13} (31), 14153--14162 (2011).\label{HQ}} and phenylacetylene--H$_2{S}$ complexes.\footnote{\href{https://dx.doi.org/10.1016/j.jms.2011.04.011}{doi:j.jms.2011.04.011}, 8.	M. Goswami and E. Arunan, {\it J. Mol. Spectrosc.\/}, {\bf 268} (1--2), 147--156 (2011).\label{HQ}} This raises the question if trends for different functionalizatin can be established: E.g., how will the aldehyde complexes of PAA--H$_2{O}$ and PAA--H$_2{S}$ behave? At this purpose, the two title complexes have been investigated using broadband rotational spectroscopy in frequency range of 2--8 GHz.

\end{document}
