ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The pure rotational spectra of CaSH and CaSD were observed using millimeter-wave absorption spectroscopy. The gas phase free radicals were produced in a high-temperature cell by the reaction of Ca vapor with H2S or D2S in the presence of an electrical discharge. The spectra were analyzed using an S-reduced Hamiltonian. The molecular constants including the rotational constants, centrifugal distortion constants, and spin-rotation constants were extracted from the spectra. The off-diagonal spin-rotation term, ||εab+εba||/2, is 3.38(12) MHz and 4.59(4) MHz for CaSH and CaSD, respectively. The moment of inertia data of CaSH and CaSD yielded the r0 structure. The three structural parameters are Ca–S=2.564(2) A(ring), S–H=1.357(17) A(ring), and (angle)Ca–S–H=91.0(18)°. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.471458
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