Periodic trends in constants of triatomic molecules |
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| Authors: | Joshua Barrow Ken Caviness Ray Hefferlin Devin Nash |
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| Affiliation: | 1. The University of Tennessee, Knoxville;2. Southern Adventist University, Collegedale, Tennessee |
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| Abstract: | Working from the arrangements of both row and group numbers developed within Mendeleev's periodic table of elements, periodic trends can be shown to exist in many constants of triatomic molecules: an extension of the Periodic Law for atoms to the realm of molecules. Trends are identified for vibrational frequencies, bond lengths, and to a lesser extent interior angles. This work includes empirical sources for such data, supplemented with calculations using diatomic analogs where possible. Otherwise, computation is used for all possible configurations of row two and row three main‐group elements to both corroborate and extend empirical results. Organization of this data into a detailed, highly symmetric, multidimensional coordinate system allows for robust graphical and statistical analysis of all constants and associated trends, which in turn permits rapid identification of suspect data to be rechecked. All collected empirical and computational data, along with several interactive visualizations highlighting these results, is available online. © 2016 Wiley Periodicals, Inc. |
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| Keywords: | triatomic molecules molecular periodicity vibrational frequencies tabulated molecular data Hefferlin |
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