Results 301 to 310 of about 1,208,196 (340)
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Trialkyl acylphosphorimidates as conjugated systems
Bulletin of the Academy of Sciences, USSR Division of Chemical Science, 1965Triethyl acylphosphorimidates are characterized by their ability to undergo substitution reactions of not only the 1,2-type, but also the 1,4-and 1,6-types. It is thus confirmed that a tetrahedral phosphorus atom can be included in the conjugated chain $$O = \mathop C\limits_| - N = \mathop P\limits_|^| - O - \mathop C\limits_|^| - .$$
M. I. Kabachnik +2 more
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Conjugation and aromaticity of macrocyclic systems
International Journal of Quantum Chemistry, 1988Using a graph theoretical approach we have analyzed the aromatic stability of macrocylic systems having ten and fewer fused benzene rings. The approach requires construction and examination of Kekule valence structures of the macrocyclic systems considered.
Larhee L. Henderson +3 more
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Reduction Potentials of Conjugated Systems [PDF]
Nature, 1949 WAZOWNEK and his collaborators have studied the reduction of conjugated systems at the dropping mercury electrode1. They have brought forward evidence to support the following mechanism :
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Conjugated polymer information system
Synthetic Metals, 2001A new polymer information system (PolymerlS) for the design and analysis of conjugated and several other classes of novel polymers is being developed. Detailed information on electronic, optical, thermo-mechanical and other relevant properties of over 20,000 electron and ion conducting polymers and polymer objects have been collected and organized in a
V. Shilov +6 more
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Vibronic interactions in conjugated systems
1962A. It is first shown how the ordinary Born-Oppenheimer approximation for separating nuclear and electron motions in a molecule can be adapted to degenerate electronic states. Semi-empirical molecular orbital theory is then used to examine Jahn-Teller distortions in the ground states of conjugated hydrocarbon radicals. Numerical predictions are made for
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Conjugation in the Biphenyl System
Journal of the American Chemical Society, 1954William A. Bonner +2 more
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Brain and other central nervous system tumor statistics, 2021
Ca-A Cancer Journal for Clinicians, 2021Carol Kruchko +2 more
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