Bond Length and Bond Valence for Tungsten-Oxygen and Tungsten-Sulfur Bonds

Authors

F. D. Hardcastle, Arkansas Tech UniversityFollow
R. Lykins, Arkansas Tech University

Abstract

In 1947, Linus Pauling presented an “empirical” dependence of bond valence (s, also referred to as bond order) and bond length R: s = exp[(R₀-R)/b], where R₀ is bond length of unit valence and “b” is a fitting parameter. Recently, an expression was derived for relating the b fitting parameter to theoretically derived atomic orbital exponents. With a method to calculate b, both R₀ and atomic orbital exponents can be experimentally determined through optimized fitting for W-O and W-S bonds. In the present study, bond length – valence relationships are found for W-O and W-S chemical bonds using published crystallographic data. The atomic orbital exponent for tungsten was found to be z_W = 1.534. Unit valence (single bond) bond lengths were found to be R_o(W-O) = 1.901 Å and R_o(W-S) = 2.307 Å.

Recommended Citation

Hardcastle, F. D. and Lykins, R. (2017) "Bond Length and Bond Valence for Tungsten-Oxygen and Tungsten-Sulfur Bonds," Journal of the Arkansas Academy of Science: Vol. 71, Article 15.
https://doi.org/10.54119/jaas.2017.7120
Available at: https://scholarworks.uark.edu/jaas/vol71/iss1/15