HYPERFINE AND QUADRUPOLE PARAMETERS OF THE MnH MOLECULE
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Date
1986
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Ohio State University
Abstract
Using the double resonance technique of ENDOR, hyperfine and quadrupole coupling parameters have been obtained for the $X^{7}\Sigma$ electronic state of the $^{55}Mn^{1}H$ molecule isolated in solid argon at $4^{\circ}K$. From pumping the $M_{S} = \pm 1 - 0, M_{I} = \pm 5/2$ or $\pm 3/2$ ESR lines, absorptions were observed from $\triangle M_{I}$ transitions within the $M_{S} = 0$ and $\pm 1$ levels. From these frequencies an improved $A_{1} (^{55}Mn)$ was derived and values for $Q^{\prime}$, the nuclear electric quadrupole parameter, and the $^{1}H$ hyperfine parameter, sH, were derived. Combining information from ESR $spectra^{1}$ with that from ENDOR yields the following: $g_{1} = 2.000(1), A_{1} (^{55}Mn) = 334(6) MHz, A_{1} (^{55}Mn) = 300(3) MHz, Q^{\prime}(^{55}Mn) = -11.81(2) MHz,[**_{H}] = 6.8(1) MHz, b_{2}^{o} = D = -0.003 cm^{-1}$.
Description
$^{1}$ R. J. van Zee, T. C. Devore, J. L. Wilkerson, and W. Weltner, Jr., J. Chem. Phys. 69. 1869 (1978). Address of authors: Department of Chemistry, University of Florida, Gainesville, FL, 32611.
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