Internal Rotation and Microwave Spectroscopy

Rate Processes and Nuclear Magnetic Resonance Spectra. II. Hindered Internal Rotation of Amides

1956 • 1,140 citations

Energy Levels and Thermodynamic Functions for Molecules with Internal Rotation I. Rigid Frame with Attached Tops

1942 • 915 citations

Microwave Spectroscopy

1956 • 760 citations

The fundamental principles of quantum mechanics

1937 • 582 citations

Infrared and Raman spectra

1989 • 549 citations

Mathematics of Physics and Chemistry

1957 • 522 citations

Calculation of Energy Levels for Internal Torsion and Over-All Rotation. III

1959 • 465 citations

The Asymmetric Rotor I. Calculation and Symmetry Classification of Energy Levels

1943 • 456 citations

Calculation of Energy Levels for Internal Torsion and Over-All Rotation. II. CH3CHO Type Molecules; Acetaldehyde Spectra

1957 • 444 citations

The Vibration‐Rotation Energy Levels of Polyatomic Molecules I. Mathematical Theory of Semirigid Asymmetrical Top Molecules

1936 • 410 citations

Approximate Treatment of the Effect of Centrifugal Distortion on the Rotational Energy Levels of Asymmetric-Rotor Molecules

1952 • 394 citations

Energy Levels and Thermodynamic Functions for Molecules with Internal Rotation: II. Unsymmetrical Tops Attached to a Rigid Frame

1946 • 383 citations

The Methyl Alcohol Molecule and Its Microwave Spectrum

1953 • 335 citations

The Statistical Weights of the Rotational Levels of Polyatomic Molecules, Including Methane, Ammonia, Benzene, Cyclopropane and Ethylene

1935 • 325 citations

Microwave Spectrum, Barrier to Internal Rotation, and Structure of Methyl Formate

1959 • 295 citations

Proton Magnetic Resonance of the CH3 Group. IV. Calculation of the Tunneling Frequency and of T1 in Solids

1958 • 253 citations

Structure of the Methylamine Molecule. I. Microwave Spectrum of CD3ND2

1957 • 227 citations

Hindered Rotation in Methyl Alcohol

1940 • 226 citations

Microwave Spectra of Molecules Exhibiting Internal Rotation. I. Propylene

1957 • 216 citations

Microwave Spectrum, Structure, and Internal Barrier of Methyl Silane

1957 • 205 citations

Microwave Spectra of Molecules Exhibiting Internal Rotation. IV. Isobutane, Tertiary Butyl Fluoride, and Trimethylphospine

1958 • 204 citations

Microwave Spectra, Dipole Moment, and Barrier to Internal Rotation of CH3NO2 and CD3NO2

1956 • 194 citations

Potential energies for rotation about single bonds

1951 • 189 citations

Microwave Spectra of Molecules Exhibiting Internal Rotation. III. Trimethylamine

1958 • 182 citations

Energy Levels and Thermodynamic Functions for Molecules with Internal Rotation. III. Compound Rotation

1949 • 181 citations

The Determination of the Potential Constants of SO2 from Centrifugal Distortion Effects

1954 • 171 citations

Internal Barrier of Propylene Oxide from the Microwave Spectrum. I

1957 • 166 citations

Methyl Alcohol. II. Molecular Structure

1955 • 160 citations

The Molecular Structure of Methyl Alcohol

1951 • 158 citations

Nuclear Magnetic Resonance

1964 • 157 citations

Restricted Rotation in Amides as Evidenced by Nuclear Magnetic Resonance

1955 • 149 citations

Hindered Rotation in Molecules with Relatively High Potential Barriers

1957 • 147 citations

The Torsion Oscillator-Rotator in the Quantum Mechanics

1932 • 147 citations

Calculation of Energy Levels for Internal Torsion and Over-All Rotation. I. CH3BF2 Type Molecules

1955 • 145 citations

Tunneling through High Periodic Barriers. II. Application to Nuclear Magnetic Resonance in Solids

1957 • 137 citations

Microwave Spectrum of Methyl Germane

1959 • 135 citations

A Simple Model for Barriers to Internal Rotation

1955 • 133 citations

Microwave Spectrum, Structure, and Internal Rotation of Dimethyl Ether

1959 • 125 citations

STERIC HINDRANCE AND COLLISION DIAMETERS¹

1932 • 122 citations

Molecular Structure of Methylamine

1956 • 116 citations

Internal Barrier of Propylene Oxide from the Microwave Spectrum. II

1958 • 113 citations

Advances in Chemical Physics

1958 • 105 citations

Theory of the Interaction of Hindered Internal Rotation with Over-All Rotations. I. Symmetric Rotors: Methyl Silane

1954 • 95 citations

The Present Status of the Statistical Method of Calculating Thermodynamic Functions.

1940 • 94 citations

Microwave Spectrum and Barrier to Internal Rotation in CH₃BF₂

1957 • 94 citations

Potential Barrier and Molecular Structure of Methyl Mercaptan from its Microwave Spectra

1957 • 90 citations

Microwave Spectrum and Barrier to Internal Rotation of Acetic Acid

1957 • 85 citations

Microwave Studies of the Internal Motion and the Structure of Methyl Amine

1957 • 83 citations

Vibration-Hindered Rotation Interactions in Methyl Alcohol. The J=0→1 Transition

1957 • 79 citations

Microwave Spectrum of CH2DCH : CH2; Equilibrium Conformation of Propylene

1958 • 75 citations

Molecular Structure of Methylamine from Its Microwave Spectrum

1955 • 75 citations

An Electrostatic Theory of the Potential Barriers Hindering Rotation around Single Bonds

1949 • 74 citations

ON THE ORIGIN OF POTENTIAL BARRIERS TO INTERNAL ROTATION IN MOLECULES

1957 • 72 citations

THE NATURE OF BOND ORBITALS AND THE ORIGIN OF POTENTIAL BARRIERS TO INTERNAL ROTATION IN MOLECULES

1958 • 70 citations

The Microwave Spectra and Molecular Structures of Trifluorosilane Derivatives

1951 • 64 citations

The Microwave Spectrum of Ethyl Fluoride

1955 • 61 citations

Microwave Spectrum of Methylamine

1954 • 61 citations

Tables of Mathieu Integrals for the Internal Rotation Problem

1957 • 61 citations

Internal Barrier in CH3CH2F and CH3CHF2 from Torsional Satellites

1956 • 60 citations

The Partition Functions and Energy Levels of Molecules with Internal Torsional Motions

1940 • 59 citations

Microwave Spectrum of Methyl Alcohol

1951 • 59 citations

Structure and Potential Barrier to Hindered Rotation in Methyl Alcohol

1955 • 54 citations

The Microwave Spectrum of Hydrogen Peroxide

1954 • 54 citations

Microwave Spectrum and Barrier to Internal Rotation for Trans-Fluoro-Propylene

1957 • 51 citations

Microwave Spectrum, Internal Barrier, Structure, Equilibrium Configuration, and Dipole Moment of Methyl Monofluorosilane

1958 • 51 citations

Microwave Spectra of Molecules Exhibiting Internal Rotation. V. Barrier Height in Ethyl Chloride and Ethyl Bromide

1959 • 50 citations

Structure of the Methylamine Molecule. II. Theory of Internal Motions and Application to CD3ND2

1957 • 50 citations

Internal Rotation and Resonance in Hydrocarbons

1939 • 49 citations

Microwave Spectrum and Structure of Propionitrile

1957 • 48 citations

Microwave Spectra of Molecules Exhibiting Internal Rotation. II. Methylallene

1957 • 45 citations

Energy Levels and Thermodynamic Functions for Molecules with Internal Rotation. IV. Extended Tables for Molecules with Small Moments of Inertia

1956 • 45 citations

Tunneling Through High Periodic Barriers. I

1956 • 45 citations

Microwave Spectroscopy

1954 • 43 citations

Microwave Spectrum of Methyl Difluorosilane

1958 • 43 citations

Microwave Spectrum of 1,1-Difluoroethane

1954 • 43 citations

Microwave Spectroscopic Evidence for Internal Rotation in Methyl Silane

1950 • 42 citations

Fine Structure of J=1←0 Transition due to Internal Rotation in Methyl Alcohol

1956 • 42 citations

Methyl Alcohol. I. Microwave Spectrum

1955 • 41 citations

Microwave Spectrum of Ethyl Chloride

1957 • 40 citations

Internal Barrier Height of Methyl Mercaptan

1955 • 39 citations

Microwave Spectrum and Barrier to Internal Rotation of Nitromethane

1954 • 38 citations

Effects of Internal Motion in the Microwave Spectrum of Methyl Amine

1954 • 37 citations

Microwave Spectrum of Ethyl Iodide

1959 • 36 citations

An Empirical Correlation and Method of Calculation of Barriers Hindering Internal Rotation

1944 • 36 citations

Theory of Internal Over-All Rotational Interactions. II. Hamiltonian for the Nonrigid Internal Rotor

1955 • 35 citations

Absorption of Methyl Alcohol and Methylamine for 1.25-Cm Waves

1947 • 34 citations

Thermodynamic Properties of Ideal Gaseous Methanol

1955 • 34 citations

Preliminary Analysis of the Pure-Rotational Spectrum of Methyl Amine

1952 • 32 citations

Theory of Internal Over-All Rotational Interactions. III. Nonrigid Asymmetric Rotors

1955 • 31 citations

Relative Intensities of Microwave Absorption Lines

1958 • 30 citations

Microwave Spectrum of Ethyl Bromide

1957 • 29 citations

Internal Rotation in Double Internal Rotor Molecules: The Microwave Spectrum of Dimethyl Silane

1959 • 29 citations

Structure and Barrier Height of Methyl Mercaptan from Microwave Data

1955 • 28 citations

Restricted rotation in ethane

1951 • 27 citations

A Relation between Internuclear Distances and Potential Barriers of Methyl Groups

1946 • 27 citations

Hindered rotation in symmetric-asymmetric molecules

1956 • 26 citations

First-Order Stark Effect in the Microwave Spectrum of Methyl Alcohol

1947 • 25 citations

Effect of a High cis-Barrier on the Microwave Spectrum of Hydrogen Peroxide

1955 • 25 citations

Microwave Investigation of Hindered Rotation and Inversion of Methylamine

1954 • 23 citations

Hindered Rotation Involving Two Asymmetric Groups

1953 • 21 citations

PRINCIPLE OF MINIMUM BENDING OF LOCALIZED AND DELOCALIZED ORBITALS; ETHANE BARRIER AND RELATED EFFECTS

1958 • 21 citations

Comments on the Internal Rotation Problem

1957 • 21 citations

Microwave Determination of the Structure of Trifluorobutyne

1957 • 20 citations

Origin of the Potential Barrier Hindering Rotation in Ethane and Related Substances

1948 • 19 citations

Microwave Absorption Line Frequencies of Methyl Alcohol and their Stark Effect

1948 • 18 citations

Experimental Evidence of Restricted Rotation in CH3–C≡C–CF3

1953 • 16 citations

Microwave Spectrum of Ethyl Chloride

1954 • 16 citations

Microwave Spectrum and Internal Barrier of Acetaldehyde

1956 • 16 citations

Microwave Spectrum of Methylamine (I)

1953 • 13 citations

A Method for the Estimation of the Relative Intensities of Microwave Absorption Lines

1954 • 13 citations

Asymmetric Internal Rotational Barriers about Single Bonds

1953 • 13 citations

The Partition Functions of Molecules with Internal Torsion I. Single Asymmetric Top Attached to Rigid Framework

1941 • 12 citations

Assignment of Torsional Frequencies in Some Halogenated Ethanes

1954 • 12 citations

Internal Rotation in Methyl-Trifluoromethyl Acetylene

1955 • 12 citations

Theory of Internal Over-All Rotational Interactions. IV. Stark Effect in Nonrigid Internal Rotors

1957 • 11 citations

Energy Levels and Thermodynamic Properties of the Internal Rotator

1950 • 11 citations

Proof of the Staggered Configuration of Ethyl Chloride

1955 • 11 citations

Internal potential barriers in saturated hydrocarbons

1953 • 11 citations

Calculation of Potential Barriers for Ethane-Like Symmetric Tops

1956 • 10 citations

Microwave Spectrum of Methyl Mercaptan (I)

1955 • 10 citations

Note on the Calculation of Energy Levels in Molecules with Internal Torsion

1956 • 9 citations

Born Repulsion and Restricted Free Rotation

1952 • 8 citations

Errata : Theory of the Interaction of Internal Rotation with Over-All Rotations. I. Symmetric Rotors : Methyl Silane

1957 • 6 citations

Thermodynamic Functions of Hydrogen Isocyanate

1954 • 6 citations

Partition Function for Internal Rotation in Methanol and Similar Molecular Models

1957 • 5 citations

HINDERED ROTATION AND MICROWAVE SPECTROSCOPY

1952 • 5 citations

Polytypism and the Origin of the Potential Barrier Hindering Internal Rotation in Molecules

1959 • 5 citations

On the Classical Mechanics of the Internal Rotation of Molecules

1958 • 3 citations

High-Energy Secondary Electrons

1955 • 3 citations

Microwave Spectrum of Methylamine (II)

1953 • 3 citations