# INTRAMOLECULAR STRAIN CONSTANTS: PYRAMIDAL $XY_{3}$ MOLECULES

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 Title: INTRAMOLECULAR STRAIN CONSTANTS: PYRAMIDAL $XY_{3}$ MOLECULES Creators: Slowinski, Emil J., Jr.; Bellis, Harold E. Issue Date: 1956 Publisher: Ohio State University Abstract: The potential function ${V}=\Sigma_{all bonds}\qquad {k}_{i}({d}_{i}-{D}_{i}^{0})^{2}+\Sigma_{all angles}\qquad {k}_{a}(a_{j}-{A}_{j}^{0})^{2}$, where $D^{0}_{i}$ and $A^{0}_{j}$ are the ""Strain free"" values of bond length and bond angle respectively, has been extended to $NH_{3}$-type molecules. Improved mathematics are described. Sufficient equations exist to determine all 6 parameters. Results in part support the conclusions made on $H_{2}O$-type molecules. There appears to be a ""preferred"" strain free bond angle. Description: Author Institution: Department of Chemistry, University of Connecticut URI: http://hdl.handle.net/1811/7464 Other Identifiers: 1956-C-1