Abstract
The microwave spectrum of tungsten pentafluoride chloride has been observed and measured. The spectrum is of the symmetric top type, exhibiting tungsten isotope effects, which have not previously been observed by microwave spectroscopy, and chlorine isotope effects. The rotational constants for the various isotopic species in the vibrational ground state are: B0= 1387.664, 1387.597, 1387.539 and 1387.413 MHz for 35Cl182WF5, 35Cl183WF5, 35Cl184WF5 and 35Cl186WF5; and B0= 1354.459, 1354.385, 1354.312 and 1354.160 MHz for the corresponding tungsten isotopes of 37ClWF5. The W—Cl bond length is determined directly from the data as r(W—Cl)= 2.252 ± 0.002 A. The determination of the other structural parameters in terms of a model with C4ν symmetry is discussed, and if all five W—F bonds are assumed equal in length the result is: r(W—F)= 1.836 ± 0.001 A; angle(F—W—Faxial)= 88°41′± 10′. The rotational spectrum in the ν11 vibrational state has been assigned and gives the rotation-vibration constant α11= 0.830 ± 0.005 MHz for the four 35ClWF5 isotopic species.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
