The Absorption Spectra of Cyclopropane, Ethylene Oxide, Ethylene Sulfide, and Ethylene Imine in the Photographic Infra‐Red

The absorption spectra of cyclopropane, ethylene oxide, ethylene sulfide, and ethylene imine have been investigated in the region between 7000 and 12,000A and the stronger bands have been assigned as third harmonics of the fundamental C☒H stretching frequencies of these molecules. Rotational fine structure was not observed under high dispersion, but the well‐defined band envelopes of the three asymmetric rotators provide interesting examples of these little investigated band types.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70004/2/JCPSA6-6-10-576-1.pd

The Spectrum of Allene in the Photographic Infra‐Red

The spectrum of allene between 7000 and 12,000A has been photographed under high dispersion, the observed bands being assigned as harmonics and combinations of fundamental frequencies of the molecule. Rotational analysis of the parallel band at 11,444A has given 97.0×10—40 g cm2 as the large moment of inertia. The perpendicular band at 11,017A has been found to be unexpectedly complicated, but was too weak for detailed analysis. It has been concluded that the dimensions in ethylene and allene are:C−H=1.087A,C=C=1.330A,H�C�H=116∘.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70146/2/JCPSA6-6-10-580-1.pd

The Vibrational Energy Levels and Specific Heat of Ethylene

In a recent review of the experimental infra-red and Raman spectra of ethylene and tetradeuteroethylene [1], Conn and Sutherland have succeeded in giving very reasonable estimates of the positions of the four fundamental lelvels associated with the "rocking frequencies" of the methylene groups in C2H4. They have at the same time revised the previous estimate of the position of the "torisional" lelvel [2] to 700 cm^-1, for reasons which are in our opinion inadequate, and with results which prove to be unsatisfactory. In particular, as they themselves remark, the calculated heat capacities then become too large. We wish to point out that a return to the Bonner assignment of this level not only yields a more reasonable explanation of the weak combination and harmonic lines in the Raman spectra, but also leads to a theoretical heat capacity which is in good agreement with the existing measured values [3] and with new experimental values recently obtained in these Laboratories

Overconfident Investors, Predictable Returns, and Excessive Trading

The last several decades have witnessed a shift away from a fully rational paradigm of financial markets toward one in which investor behavior is influenced by psychological biases. Two principal factors have contributed to this evolution: a body of evidence showing how psychological bias affects the behavior of economic actors; and an accumulation of evidence that is hard to reconcile with fully rational models of security market trading volumes and returns. In particular, asset markets exhibit trading volumes that are high, with individuals and asset managers trading aggressively, even when such trading results in high risk and low net returns. Moreover, asset prices display patterns of predictability that are difficult to reconcile with rational-expectations–based theories of price formation. In this paper, we discuss the role of overconfidence as an explanation for these patterns

The Rotational Structure of the Hydrazoic Acid Bands in the Photographic Infra‐Red

The third and fourth harmonics of the N☒H stretching frequency in hydrazoic acid, at 9547.31 and 12,412.19 cm—1, respectively, have been studied photographically under high dispersion. The rotational structure has been well resolved and completely analyzed, to yield the rotational constants in the ground and excited states. The effective moments of inertia in the ground state have been combined with other information to determine the structure of the molecule; the best values of the molecular parameters are:N1�H=1.012AN2�N3=1.128AN1�N2=1.241AΔHN1N2=110∘52′.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69457/2/JCPSA6-8-2-135-1.pd