Spectroscopy of EDA Complexes at High Pressures. II. Absorption of Several TCNE Complexes in Polymer Matrices
- 1 July 1966
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 45 (1), 269-274
- https://doi.org/10.1063/1.1727321
Abstract
The charge‐transfer absorption of 12 aromatic‐hydrocarbon—TCNE molecular complexes in polymer matrices has been studied in the 0–25‐kbar range. The observations for these solid solutions are compared with the results for compressed liquid solutions obtained by Gott and Maisch. The spectral shifts in the charge‐transfer‐band maxima range between +540 and −1700 cm−1 at 25 kbar for the complexes containing the various donors. A 1.1–3.5‐fold increase in intensity at 25 kbar can be related directly to electronic transition strengths without applying corrections for complexation equilibria as required in liquid solutions. The bandwidths of the charge‐transfer bands appear insensitive to compression. A comparison of the pressure influence on the spectral characteristics of molecular complexes and of the free donors suggests that for complexes the effects from solvent interactions are overshadowed by strong charge‐transfer forces which are highly specific in nature.Keywords
This publication has 43 references indexed in Scilit:
- π-Complex Interactions. II.1 Methyl Substituted Benzenes and Naphthalenes with Tetracyanoethylene2Journal of the American Chemical Society, 1964
- π-Complexes. I. Charge Transfer Spectra of π-Complexes Formed by Trinitrobenzene with Polycyclic Aromatic Compounds1Journal of the American Chemical Society, 1961
- Molecular Complexes and their Spectra. IX. The Relationship between the Stability of a Complex and the Intensity of its Charge-transfer Bands1Journal of the American Chemical Society, 1959
- Cyanocarbon Chemistry. II.1 Spectroscopic Studies of the Molecular Complexes of TetracyanoethyleneJournal of the American Chemical Society, 1958
- Molecular Complexes and Their Spectra. VII. The Spectrophotometric Study of Molecular Complexes in Solution; Contact Charge-transfer Spectra1Journal of the American Chemical Society, 1957
- The Spectra of Iodine Solutions. II. The Effects of High Pressures upon Iodine Complexes1Journal of the American Chemical Society, 1954
- Molecular Compounds and their Spectra. IIJournal of the American Chemical Society, 1952
- Further Rough Compressions to 40,000 Kg/Cm, Especially Certain LiquidsProceedings of the American Academy of Arts and Sciences, 1949
- Rough Compressions of 177 Substances to 40,000 Kg/CmProceedings of the American Academy of Arts and Sciences, 1948
- The Compression of 46 Substances to 50,000 kg/cmProceedings of the American Academy of Arts and Sciences, 1940