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Showing 1 to 20 of 39 for “"molecular complexes"”.
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Microwave Spectroscopy of Weakly Bound Molecular Complexes
… resolution microwave spectra of weakly bound molecular complexes are discussed. These complexes, consisting of a polar linear molecule and a rare gas atom or other molecule as the bound partner, have binding energies ranging from 0.2 to 6.0 kcal/mole. Formation of the complexes is achieved by …
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Investigations in molecular structure: from scattering to molecular complexes of brominated compounds
… with reference to polymorphism and intermolecular interactions. To achieve this, work on the investigation of nucleation and early-stage crystallisation was carried out at the Department of Pharmaceutical Sciences at the University of Strathclyde and also at the central synchrotron …
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N.M.R. Studies of the Formation of Molecular Complexes in the Liquid Phase
… by nuclear magnetic resonance spectroscopy of complexes formed transiently between polar aliphatic molecules (solutes) and aromatic solvents. The complexes are studied by the use of 1H chemical shifts and spin-lattice relaxation times. The purpose of the work is to confirm the validity of …
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The crystal structure and constitution of some molecular complexes of 4:4- dinitrodiphenyl
The crystal structures or a number of molecular complexes formed by 4:4'-dinitrodiphenyl with various diphenyl derivatives are described. The general type of structure is undoubtedly the same for all the complexes examined and the typical arrangement may be taken as that in the complex of …
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Internal and External Vibrations of Weakly Bound Molecular Complexes: Infrared Spectroscopy and Vibrational Analysis
… has been used to study the internal (intramolecular) and external (intermolecular) vibrations of weakly bound molecular complexes in a molecular beam apparatus. The apparatus features a continuous supersonic expansion source and mass selective detection which employs electron impact …
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Characterisation of the molecular complexes that regulate the G2/M checkpoint of the eukaryotic cell cycle
… and/or biochemical characterisation of the molecular complexes that form at the G2 checkpoint to regulate entry into mitosis. CDK1 and cyclin B1 were separately expressed and purified from baculovirus-infected Sf9 cells. The wee1/14-3-3β complex was also expressed and purified, incorporating …
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I. Molecular Complexes of Iodine. Ii. The Behavior of Iron(iii) Chloride in Non-Aqueous Solvents
Made available in DSpace on 2014-12-05T19:38:00Z (GMT). No. of bitstreams: 1 6206117.pdf: 3989388 bytes, checksum: 7de0e177d16fc928d61603746158b143 (MD5) Previous issue date: 1962
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Rigorous Studies of the Electronic Structures of Molecules and Molecular Complexes. Electron Correlation Effects in the Hydrogen Bonding of Small Dimeric Systems (Hydrogen Fluoride, Carbon Monoxide, Nitrogen, Hydrogen Cyanide)
… equilibrium structures are found for these complexes, an attempt is made to elucidate their vibrationally averaged structures. It is found that the binding energies range from about two to seven kcals and the nature of this hydrogen bonding interaction is examined. Results for an …
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Rotational Spectroscopy of Weakly-Bound Complexes Utilizing a High-Temperature Molecular Source (Microwave)
… spectroscopic studies of several weakly-bound molecular complexes are presented here. These studies were performed using a pulsed Fourier-transform microwave spectrometer, employing a Fabry-Perot cavity and a pulsed, supersonic nozzle. A high-temperature molecular source that permits the study …
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Hydrogen transfer in hydrogen bonded solid state materials
… have a similar affinity for the proton. The molecular complexes of isonicotinamide with oxalic acid crystallise in two hydrogenous polymorphs and, upon substituting the acidic hydrogen for deuterium, in two deuterated polymorphs, neither being isostructural to the hydrogenous forms. This …
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Structure and Dynamics of Van Der Waals Molecules From Microwave Spectroscopy
… rotational spectra of several weakly bound molecular complexes, or van der Waals molecules, involving the binding between a rare gas atom and a linear molecule are examined here. The gas phase rotational spectra were obtained by using the recently developed technique of combining pulsed …
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An investigation of hydrogen bonded molecular systems using X-ray and neutron diffraction
… crystallisation of a large number of molecular complexes of the chloranilic acid molecule, and examining the bifurcated hydrogen bond motif found in many of the chloranilic acid co-crystals discovered. The neutron single crystal diffraction instruments SXD and VIVALDI have been used to …
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Fabry-Perot Cavity, Pulsed Fourier Transform Molecular Beam Microwave Spectroscopy
… of the theory of a Fabry-Perot cavity, of molecular polarization and of molecular beams is presented as it relates to this spectrometer. The block diagram is presented that shows how these techniques are incorporated into a working system. Certain design considerations relevant to the …
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The investigation of infrared absorption intensities in hydrogen-bonded complexes
The nature of hydrogen bonding within molecular complexes is explored through the use of infrared spectroscopy. Vibrational predissociation of strongly hydrogen bonded dimers has been performed using the molecular beam depletion technique. An investigation of the O-H stretches in (CH$\sb3$OH)$\sb2$ …
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NMR studies of the exchange reactions of CH3CN.BX3 with excess CH3CN /|nJoseph Fogelman. -- 260 St. Catharines, Ont. : [s. n.],
Exchange reactions between molecular complexes and excess acid or base are well known and have been extensively surveyed in the literature(l). Since the exchange mechanism will, in some way involve the breaking of the labile donor-acceptor bond, it follows that a discussion of the factors relating …
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Dynamics of lattice vibrations, molecular rotations and spins studied by terahertz spectroscopy
… to study the linear and nonlinear responses of molecular dipole, spin, and lattice degrees of freedom in molecular and condensed-matter systems. We have developed several THz spectroscopy methods suitable for interrogating different material systems including THz pump-optical probe spectroscopy, …
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Synthesis and characterization of various ruthenium small molecules and metallopolymers for potential use in photovoltaic devices and luminescence properties of N-heterocyclic carbenes and trifluoro methylated tris(pyrazolyl)borate silver (I) acid-base adducts
… structure and properties of selected metal complexes and their use in electronic devices. The first chapter discusses the development of ruthenium-based metallopolymer and small molecular complexes toward possible utilization as active materials for solar cells. Such complexes have been …
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Magnetic Properties of Molecular and Nanoscale Magnets
… structural and magnetic properties of nano- and molecular magnets and the interplay between these properties reveals new interesting effects and suggests ways to control and optimize the respective material. The main task of this thesis is investigating the magnetic properties of molecular …
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Recognition of Cations and Anions by Lanthanide Complexes
… research, there is a strong unmet need for novel molecular complexes that readily enable concomitant imaging of multiple ions in different environments with high sensitivity and selectivity.
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Electrochemical nanomoulding through proteins
… purified as micron-sized sheets of periodic molecular complexes with 18-nm hexagonal and 13-nm square unit cell lattices, respectively. Direct imaging by transmission electron microscopy on ultrathin noble metal films without sample preparation eliminates potential artifacts to the high …
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