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Dissertations / Theses on the topic 'Intermolecular Bonding'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Page, Christopher Samuel. "On non-classical intermolecular interactions and chiral recognition." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287722.

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2

Starbuck, Jonathan. "Structural studies of compounds containing p-block elements." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340162.

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3

Hudson, Amanda Gayle. "Characterization of Intermolecular Interactions in Nanostructured Materials." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/77855.

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Advanced analytical techniques were utilized to investigate the intermolecular forces in several nanostructured materials. Techniques including, but not limited to, isothermal titration calorimetry (ITC), variable temperature Fourier transform infrared (FTIR) spectroscopy, and ultraviolet-visible (UV-Vis) thermal curves were used to study the fundamental interactions present in various nanomaterials, and to further probe the influence of these interactions on the overall behavior of the material. The areas of focus included self-assembly of surfactant micelles, polycation complexation of DNA

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4

Leal, Ayala Angel Andres. "Effect of intermolecular hydrogen bonding on the micro-mechanical properties of high performance organic fibers." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 307 p, 2008. http://proquest.umi.com/pqdweb?did=1597616621&sid=11&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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5

Broder, Charlotte Kate. "Diffraction studies of hydrogen bonding and other intermolecular interactions in organic crystal structures." Thesis, Durham University, 2002. http://etheses.dur.ac.uk/3886/.

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In this work three different approaches to the study of intermolecular interactions are shown. The aim is to further the understanding of specific intermolecular interactions with a view to eventually allowing the prediction and design of crystal structures from the initial molecular building blocks: crystal engineering. All three approaches make use of crystal structural information derived from X-ray and/or neutron diffraction studies. The three approaches are: • Data base approach. Specifically, the study of occurrence of hi- and tri-furcated hydrogen bonds in the Crystallographic Structura

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6

Mehra, Nitin. "Thermal Conduction in Polymer Based Materials by Engineering Intermolecular Interactions." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1578202939238852.

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7

McKee, Matthew Gary. "The Influence of Branching and Intermolecular Interactions on the Formation of Electrospun Fibers." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29370.

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The implications of chain topology and intermolecular interactions on the electrospinning process were investigated for linear and randomly branched polymers. Empirical correlations were developed based on solution rheological measurements that predict the onset of electrospun fiber formation and average fiber diameter. In particular, for neutral, non-associating polymer solutions, the minimum concentration required for fiber formation was the entanglement concentration (Ce), and uniform, bead-free fibers were formed at 2 to 2.5 Ce. This was attributed to entanglement couplings stabilizing

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8

Fedor, Anna M. "Terahertz spectroscopy of the intermolecular and intramolecular vibrations of molecules in solution." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available, full text:, 2007. http://wwwlib.umi.com/cr/syr/main.

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9

Odendal, James Arthur. "Investigating intermolecular interactions motifs in ammonium carboxylate salts." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2965.

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Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: This thesis reports an in-depth investigation of the intermolecular interaction motifs in secondary, primary and ammonium carboxylate salts. The investigation was conducted using the Cambridge Structural Database (CSD), together with a systematic steric-specific experimental study. The tendency in the literature has been to analyse organic salt crystal structures in terms of hydrogen bonding patterns, almost ignoring cation-anion interactions. This study focuses on the cation-anion inter

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10

Spencer, Claire Louise. "High resolution laser and infrared spectroscopy and ab initio calculations for the study of intermolecular hydrogen bonding." Thesis, University of Sheffield, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566483.

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A blue shift in the CH stretching vibration of formic acid cyclic dimer of 6.6 ern" (symmetric) and 3 ern" (antisymmetric) is observed by high resolution Raman (symmetric) and infrared (antisymmetric) spectroscopy. This is corroborated by theoretical ab initio calculations where blue shifts in the CH stretching vibration of 12.79 ern" (symmetric) and 10.26 ern" (antisymmetric) are calculated (CP corrected MP2/6-311++G(d,p) level of theory). This is unusual due to the CH bond not playing a direct part in the bonding of the dimer. The electric dipole moment derivative curve with respect to bond

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11

Guillaumes, Domènech Laia. "Analysis of cooperation and electron delocalization in intermolecular hydrogen bonds." Doctoral thesis, Universitat de Girona, 2015. http://hdl.handle.net/10803/302666.

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This thesis presents different studies on hydrogen bonds that occur between two molecules. It is because of the biological importance of DNA that the base pairs, and other compounds with similar hydrogen bonds as these base pairs, have been studied in this thesis. The main objective of the thesis is to understand Resonance Assisted Hydrogen Bonds (RAHB). There are two well-defined parts in this thesis. First, electron delocalization indices are used in order to have a better image of the HB formation in our systems. Secondly, a decomposition of the hydrogen bond energy allows understanding t

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12

Chopade, Prashant D. "From supramolecular selectivity to nanocapsules." Diss., Kansas State University, 2012. http://hdl.handle.net/2097/13529.

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Doctor of Philosophy<br>Department of Chemistry<br>Christer B. Aakeroy<br>A family of three 2-aminopyrazine derivatives were prepared and co-crystallized with thirty carboxylic acids. Our theoretical charge calculations and experimental results from 90 reactions demonstrated that decreasing the charge on the hydrogen-bond acceptor sites results in a decrease of the supramolecular yield (the frequency of occurrence of the desired outcome). However, synthon crossover (undesired connectivity) was observed 7/12 times and was unavoidable due to competitive binding sites present in the N-heterocycli

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13

Hopkins, Brian Wayne. "Ab Initio studies of intermolecular interactions : hydrogen bonding, van der Waals interactions, and the multicentered approach to integrated quantum mechanical calculations /." Full text available from ProQuest UM Digital Dissertations, 2006. http://0-proquest.umi.com.umiss.lib.olemiss.edu/pqdweb?index=0&did=1299816221&SrchMode=1&sid=9&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1193427878&clientId=22256.

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14

Pandullo, Marco. "Metallosupramolecular polyhedra for inclusion in multicomponent co-crystals." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/232691/1/Marco_Pandullo_Thesis.pdf.

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This project investigated the effects of co-crystallisation on hierarchical assembly and solid-state stability of metallosupramolecular cages of Fe(II), Co(II) and Co(III). The prospects for encapsulating and/or connecting the metallosupramolecular cages with halogen bonded intermolecular networks were explored. A wide range of analyses were performed, both in solution and in the solid state, to assess the chemical and structural diversity resulting from the inclusion of halogen bonding components within crystals of these novel metal complexes.

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15

Heger, Matthias. "Diagonal and Off-Diagonal Anharmonicity in Hydrogen-Bonded Systems." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-874B-E.

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16

Loots, Leigh-Anne. "Investigation of the co-crystallisation of N-heterocycles." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/4052.

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Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2009.<br>Co-crystals are excellent materials for studying intermolecular interactions in the solid-state and can be used to further our knowledge of the balance between strong and weak intermolecular interactions. The O–H∙∙∙∙∙∙Narom synthon was chosen as the focus of this investigation of hydrogen bonding motifs. The starting materials selected all have two hydrogen bond donor and/or acceptor sites for the formation of extended networks. All molecules are also aromatic such that the influence of weaker π∙∙∙∙∙∙π interacti

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17

Oswald, Sönke. "Weak Hydrogen Bonds to Molecular Nitrogen and Oxygen as Experimental Benchmarks for Quantum Chemistry." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://hdl.handle.net/11858/00-1735-0000-002E-E5E0-3.

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18

Gottschalk, Hannes Christian. "IR-Untersuchung von schwach gebundenen Molekülaggregaten im Überschallstrahl." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-14EE-9.

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19

Zhang, Shihai. "Broadband dielectric study of miscible polymer blends with intermolecular hydrogen bonding." 2003. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-405/index.html.

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20

Pavan, S. "Unravelling the Nature of Halogen and Chalcogen Intermolecular Interactions by Charge Density Analysis." Thesis, 2015. https://etd.iisc.ac.in/handle/2005/3868.

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The thesis entitled “Unravelling the Nature of Halogen and Chalcogen Intermolecular Interactions by Charge Density Analysis" consists of five chapters. A basic introductory section describes the topics relevant to the work and the methods and techniques utilized. The main focus of the present work is to characterize the interaction patterns devoid of strong classical hydrogen bonds. The case studies include halogen bonds and hydrogen bonds involving bromine (as a halogen bond donor and hydrogen bond acceptor), intermolecular chalcogen bond formation involving sulphur, type I Br Br contacts, ty

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Pavan, S. "Unravelling the Nature of Halogen and Chalcogen Intermolecular Interactions by Charge Density Analysis." Thesis, 2015. http://etd.iisc.ernet.in/2005/3868.

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The thesis entitled “Unravelling the Nature of Halogen and Chalcogen Intermolecular Interactions by Charge Density Analysis" consists of five chapters. A basic introductory section describes the topics relevant to the work and the methods and techniques utilized. The main focus of the present work is to characterize the interaction patterns devoid of strong classical hydrogen bonds. The case studies include halogen bonds and hydrogen bonds involving bromine (as a halogen bond donor and hydrogen bond acceptor), intermolecular chalcogen bond formation involving sulphur, type I Br Br contacts, ty

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22

Wu, Long Shing, and 吳龍興. "Theorical Study of Intermolecular and Inter-Ionic molecular Hydrogen Bonding in Amines Comparing System." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/52093114401543887101.

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碩士<br>國防大學中正理工學院<br>應用化學研究所<br>91<br>In this article we studied the amines (N(CH3)nH3-n) combined with different kinds of molecule to create the intermolecular hydrogen bonding and inter-ionic hydrogen bonding complex, from that way, discussing the influence of molecular structure stability by two kinds of hydrogen bonding systems. In the intermolecular hydrogen bonding system, we chosen amines combined with nitric acid (HNO3) or hydrogen halide (HX,X=F, Cl or Br) complex, to compare and analyze the affect of hydrogen bonding by methyl group and steric effect. However, in the part of ionic-int

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23

Jiang, Zhi Qiang, and 江志強. "The intermolecular hydrogen bonding of pyrrole, and internal rotation and intramolecular hydrogen bonding of phenols:theoretical calculations and matrix isolation-IR study." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/37178311357860356862.

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博士<br>國立臺灣大學<br>化學研究所<br>82<br>In this dissertation, the intermolecular hydrogen bonding of hydrogen bonding of phenols were studied by means of theoretical calculations and IR-Matrix isolation technique. In part I, we mainly investigated the NH--Pi hydrogen-bonds of pyrrole multimers. The optimized structure of pyrrole dimer shows that the NH of the proton donor moiety points to the center of the C3-C4 bond of the proton acceptor moiety.The NH--Pi hydro-gen bonding energies of pyrrole dimer calculated by MP2/6-31G(d) and HF/6-31G(d)

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24

Yeh, Jung-Kai, та 葉容凱. "Preparation of DNICs with intermolecular hydrogen bonding & α-lipoic acid. Synthesis, photochemical reactions and cytotoxicity". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/53841674322035596374.

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25

Das, Arijit. "Microwave Rotation-Tunnelling Spectroscopic and Theoretical Studies on Weakly Bound Molecular Complexes: Intermolecular Bonding across the Periodic Table." Thesis, 2021. https://etd.iisc.ac.in/handle/2005/5567.

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Intermolecular interactions appear to be well understood in a broad sense today; at a deeper molecular level, it is still evolving. Spectroscopy in this isolated state proved to be a first step toward understanding the intermolecular interaction at the molecular level. Microwave spectroscopy offers precise structural information on the near-equilibrium geometry of small dimers and trimers in isolation. Computational studies like the Atoms in Molecules (AIM), non-covalent index plots (NCI), and natural bond orbital analysis (NBO) are used to augment rotational spectroscopic investigations.

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26

Aiswarya, Lakshmi P. "Rotational Specroscopic And Theoretical Investigations Of Non-conventional Hydrogen Bonds." Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2405.

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The nature of interactions within a molecule, i.e. chemical bonding, is well understood today. However, our understanding about intermolecular interactions, which has great relevance in nature, is still evolving. Historically there are two types of intermolecular interactions, van der Waals interaction and hydrogen bonding. However, there has been an upsurge of interest in the halogen bonding and lithium bonding during the last decade. The main emphasis of our research is to understand these interactions in detail, in particular non-conventional hydrogen bond acceptors. In this work, weakly bo

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27

Aiswarya, Lakshmi P. "Rotational Specroscopic And Theoretical Investigations Of Non-conventional Hydrogen Bonds." Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2405.

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The nature of interactions within a molecule, i.e. chemical bonding, is well understood today. However, our understanding about intermolecular interactions, which has great relevance in nature, is still evolving. Historically there are two types of intermolecular interactions, van der Waals interaction and hydrogen bonding. However, there has been an upsurge of interest in the halogen bonding and lithium bonding during the last decade. The main emphasis of our research is to understand these interactions in detail, in particular non-conventional hydrogen bond acceptors. In this work, weakly bo

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28

Devendra, Mani *. "Microwave Spectroscopic and Atoms in Molecules Theoretical Investigations on Weakly Bound Complexes : From Hydrogen Bond to 'Carbon Bond'." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3465.

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Weak intermolecular interactions have very strong impact on the structures and properties of life giving molecules like H2O, DNA, RNA etc. These interactions are responsible for many biological phenomena. The directional preference of some of these interactions is used for designing different synthetic approaches in the supramolecular chemistry. The work reported in this Thesis comprises of investigations of weak intermolecular interactions in gas phase using home-built Pulsed Nozzle Fourier Transform Microwave (PN-FTMW) spectrometer as an experimental tool and ab-initio and Atoms in Molecules

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Devendra, Mani *. "Microwave Spectroscopic and Atoms in Molecules Theoretical Investigations on Weakly Bound Complexes : From Hydrogen Bond to 'Carbon Bond'." Thesis, 2013. http://etd.iisc.ernet.in/2005/3465.

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Weak intermolecular interactions have very strong impact on the structures and properties of life giving molecules like H2O, DNA, RNA etc. These interactions are responsible for many biological phenomena. The directional preference of some of these interactions is used for designing different synthetic approaches in the supramolecular chemistry. The work reported in this Thesis comprises of investigations of weak intermolecular interactions in gas phase using home-built Pulsed Nozzle Fourier Transform Microwave (PN-FTMW) spectrometer as an experimental tool and ab-initio and Atoms in Molecules

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30

Shahi, Abhishek. "Microwave Spectroscopic and Theoretical Investigations on Inter/Intra Molecular Bonding." Thesis, 2014. http://etd.iisc.ac.in/handle/2005/3510.

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The importance of weak interactions between molecules to life and all parts of science and engineering is unquestionable and there have been an enormous interest in such interactions. Among all the weak interactions, hydrogen bonding is the most popular and it has enjoyed the most attention of the scientific community. Halogen bonding is gaining more popularity in the recent time, as its importance to biological molecules and crystal engineering has been recognized. In this work, a Pulsed Nozzle Fourier Transform Microwave spectrometer has been used to study the rotational spectra of molecules

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31

Shahi, Abhishek. "Microwave Spectroscopic and Theoretical Investigations on Inter/Intra Molecular Bonding." Thesis, 2014. http://etd.iisc.ernet.in/2005/3510.

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The importance of weak interactions between molecules to life and all parts of science and engineering is unquestionable and there have been an enormous interest in such interactions. Among all the weak interactions, hydrogen bonding is the most popular and it has enjoyed the most attention of the scientific community. Halogen bonding is gaining more popularity in the recent time, as its importance to biological molecules and crystal engineering has been recognized. In this work, a Pulsed Nozzle Fourier Transform Microwave spectrometer has been used to study the rotational spectra of molecules

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32

Paton, Andrew Simon. "Altering the Crystal Packing of Boronsubphthalocyanine Derivatives through Molecular Engineering." Thesis, 2013. http://hdl.handle.net/1807/35924.

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There are currently three known crystal packing motifs of boronsubphthalocyanine derivatives. Each motif is associated with a particular class of BsubPc derivatives, and none are ideal for organic electronic applications according to the criteria we defined for evaluation: having a continuous pathway for charge-carrier conduction in the solid-state, resistance to hydrolysis, good electrochemical and optical properties, and possession of a robust crystal form. In this thesis, we present five methods for altering the crystal packing structure of phenoxy-BsubPc derivatives in order to meet the ab

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33

Raghavendra, B. "Theoretical And Spectroscopic Studies On Weakly Bound Complexes And Acetylene." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/851.

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Atoms construct the molecules and molecules construct the material substances (with the exceptions as well, e.g.., metals, where atoms directly construct the material substances). Intermolecular interactions play an important role in most of the branches of sciences, ranging from material sciences to biological sciences. Van der Waals interactions are weak intermolecular interactions while hydrogen bonding varies in strength from weak to strong (1 to 40 kcal/mol). The present work focuses on applying some theoretical methods (ab initio and Atoms in Molecules theory) on these interactions to di

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Raghavendra, B. "Theoretical And Spectroscopic Studies On Weakly Bound Complexes And Acetylene." Thesis, 2008. http://hdl.handle.net/2005/851.

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Atoms construct the molecules and molecules construct the material substances (with the exceptions as well, e.g.., metals, where atoms directly construct the material substances). Intermolecular interactions play an important role in most of the branches of sciences, ranging from material sciences to biological sciences. Van der Waals interactions are weak intermolecular interactions while hydrogen bonding varies in strength from weak to strong (1 to 40 kcal/mol). The present work focuses on applying some theoretical methods (ab initio and Atoms in Molecules theory) on these interactions to di

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35

Wlaźlak, Ewelina. "Badanie wpływu oddziaływań międzycząsteczkowych na właściwości wybranych jodków i trójjodków." Praca doktorska, 2019. https://ruj.uj.edu.pl/xmlui/handle/item/79707.

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Dość pobieżnie dotąd scharakteryzowane hybrydowe organiczno-nieorganiczne półprzewodniki są interesującą grupą materiałów o potencjalnym zastosowaniu w elektronice, fotokatalizie, fotowoltaice, optoelektronice i pokrewnych dziedzinach badań. Siła oddziaływań obecnych w strukturze krystalicznej znajduje odzwierciedlenie w strukturze elektronowej, co można zaobserwować analizując dystrybucję gęstości stanów elektronowych poszczególnych materiałów. Silne oddziaływania (kowalencyjne i jonowe) w półprzewodnikach nieorganicznych pozwalają na tworzenie się ciągłych pasm w strukturze elektronowej. Po

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Venkatraman, Ravi Kumar. "Solvent Effects on Photochemistry and Photophysics of Aromatic Carbonyls : A Raman and Computational study." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/2921.

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Solvent effects play diverse roles in myriads of chemical, physical and biological processes. The solvent interacts with the solute by: i) non-specific (Coulombic, van der Waals interactions) and ii) specific interactions (hydrogen bonding, etc.). These interactions are responsible for solvation of the solute and are collectively termed as “solvent polarity”. Differential solvation of ground and excited electronic states is manifested in the absorption spectrum as a change in the band position, intensity or shape, which is termed as “solvatochromism”. Intermolecular hydrogen bonding (IHB) is a

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Venkatraman, Ravi Kumar. "Solvent Effects on Photochemistry and Photophysics of Aromatic Carbonyls : A Raman and Computational study." Thesis, 2016. http://etd.iisc.ernet.in/handle/2005/2921.

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Solvent effects play diverse roles in myriads of chemical, physical and biological processes. The solvent interacts with the solute by: i) non-specific (Coulombic, van der Waals interactions) and ii) specific interactions (hydrogen bonding, etc.). These interactions are responsible for solvation of the solute and are collectively termed as “solvent polarity”. Differential solvation of ground and excited electronic states is manifested in the absorption spectrum as a change in the band position, intensity or shape, which is termed as “solvatochromism”. Intermolecular hydrogen bonding (IHB) is a

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38

Mandal, Pankaj Kanti. "Rotational Spectra Of Weakly Bound H2S Complexes And 'Hydrogen Bond Radius'." Thesis, 2005. https://etd.iisc.ac.in/handle/2005/1511.

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Mandal, Pankaj Kanti. "Rotational Spectra Of Weakly Bound H2S Complexes And 'Hydrogen Bond Radius'." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1511.

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40

Dikundwar, Amol G. "Organic Fluorine in Crystal Engineering : Consequences on Molecular and Supramolecular Organization." Thesis, 2013. https://etd.iisc.ac.in/handle/2005/3352.

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The thesis entitled “Organic fluorine in crystal engineering: Consequences on molecular and supramolecular organization” consists of six chapters. The main theme of the thesis is to address the role of substituted fluorine atoms in altering the geometrical and electronic features in organic molecules and its subsequent consequences on crystal packing. The thesis is divided into three parts. Part I deals with compounds that are liquids under ambient conditions, crystal structures of which have been determined by the technique of in situ cryocrystallography. Part II demonstrates the utilizatio

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Dikundwar, Amol G. "Organic Fluorine in Crystal Engineering : Consequences on Molecular and Supramolecular Organization." Thesis, 2013. http://etd.iisc.ernet.in/2005/3352.

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The thesis entitled “Organic fluorine in crystal engineering: Consequences on molecular and supramolecular organization” consists of six chapters. The main theme of the thesis is to address the role of substituted fluorine atoms in altering the geometrical and electronic features in organic molecules and its subsequent consequences on crystal packing. The thesis is divided into three parts. Part I deals with compounds that are liquids under ambient conditions, crystal structures of which have been determined by the technique of in situ cryocrystallography. Part II demonstrates the utilization

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42

Goswami, Mausumi. "Rotational Spectroscopic And Ab Initio Studies On The Weakly Bound Complexes Containing 0-H...π And S-H...π Interactions". Thesis, 2009. https://etd.iisc.ac.in/handle/2005/942.

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Work reported in this thesis mainly comprises of the assignments and analysis of the rotational spectra and structures of three weakly bound complexes: C2H4•••H2S, C6H5CCH•••H2O and C6H5CCH•••H2S. All the data have been collected using a home built Pulsed Nozzle Fourier Transform Microwave Spectrometer. Apart from this, the thesis also deals with a criterion of classifying a weakly bound complex to a ‘hydrogen-bonded’ one. First chapter of the thesis gives a brief intermolecular interactions and molecular clusters of π system. It also briefly touches on the structural determination by rotati

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43

Goswami, Mausumi. "Rotational Spectroscopic And Ab Initio Studies On The Weakly Bound Complexes Containing 0-H...π And S-H...π Interactions". Thesis, 2009. http://hdl.handle.net/2005/942.

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Work reported in this thesis mainly comprises of the assignments and analysis of the rotational spectra and structures of three weakly bound complexes: C2H4•••H2S, C6H5CCH•••H2O and C6H5CCH•••H2S. All the data have been collected using a home built Pulsed Nozzle Fourier Transform Microwave Spectrometer. Apart from this, the thesis also deals with a criterion of classifying a weakly bound complex to a ‘hydrogen-bonded’ one. First chapter of the thesis gives a brief intermolecular interactions and molecular clusters of π system. It also briefly touches on the structural determination by rotatio

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