DOI: 10.1063/1.1731435. Structure of the Isobutane Molecule; Change of Dipole Moment on Isotopic Substitution

Structure of the Isobutane Molecule; Change of Dipole Moment on Isotopic Substitution

10.1063/1.1731435

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The microwave spectra of 5 isotopic species of isobutane have been measured and analyzed. The isobutane molecule is shown to belong to point group C3v. The structural parameters determined by the substitution method are r(CC)=1.525 A, ≰CCC=111.15°, r(CH)=1.108 A (tertiary), r(CH)=1.09–1.10 A (methyl), ≰HCH=107.5°—109.5°. The structure is compared with that of other hydrocarbons, and it is suggested that a small systematic difference exists between CC distances determined by microwave and electron diffraction methods. Accurate Stark measurements show that the dipole moment of (CH3)3CD is 6.5%±0.9% higher than that of (CH3)3CH.

Bibliography

Lide, D. R. (1960). Structure of the Isobutane Molecule; Change of Dipole Moment on Isotopic Substitution. The Journal of Chemical Physics, 33(5), 1519â1522.

Authors 1

David R. Lide (first)

References 14 Referenced 90

10.1063/1.1744611 / J. Chem. Phys. (1958)
{'key': '2024020819270101900_r2'}
10.1139/v57-132 / Can. J. Chem. (1957)
10.1119/1.1933338 / Am. J. Phys. (1953)
10.1063/1.1744602 / J. Chem. Phys. (1958)
{'key': '2024020819270101900_r6'}
10.1063/1.1731434 / J. Chem. Phys. (1960)
10.1063/1.1730503 / J. Chem. Phys. (1959)
10.1021/ja01527a002 / J. Am. Chem. Soc. (1959)
10.3891/acta.chem.scand.09-0815 / Acta Chem. Scand. (1955)
10.1039/tf9383401209 / Trans. Faraday Soc. (1938)
10.1039/tf9585401441 / Trans. Faraday Soc. (1958)
10.1080/00268975800100141 / Mol. Phys. (1958)
{'key': '2024020819270101900_r14'}

Dates

Type	When
Created	20 years, 7 months ago (Jan. 5, 2005, 9:43 p.m.)
Deposited	1 year, 6 months ago (Feb. 8, 2024, 2:36 p.m.)
Indexed	1 year, 1 month ago (July 8, 2024, 1:10 a.m.)
Issued	64 years, 10 months ago (Nov. 1, 1960)
Published	64 years, 10 months ago (Nov. 1, 1960)
Published Print	64 years, 10 months ago (Nov. 1, 1960)

Funders 0

None

BibTeX

@article{Lide_1960, title={Structure of the Isobutane Molecule; Change of Dipole Moment on Isotopic Substitution}, volume={33}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1731435}, DOI={10.1063/1.1731435}, number={5}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Lide, David R.}, year={1960}, month=nov, pages={1519–1522} }

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