HYPERFINE INTERACTIONS IN CrN AND MoN

$^{a}$ W.J. Balfour, C.X.W. Qian, and C. Zhou J. Chem. Phys. 106, 4383 (1997). $^{b}$ C. Zhou, W.J. Balfour, and C.X.W. Qian J. Chem. Phys. 107, 4437 (1997).Author Institution: Department of Chemistry and Biochemistry, Arizonia State UniversityPure rotational transitions of $^{52}Cr^{14}N$ and $^{98}Mo^{14}N$ radicals in their $X^{4}\Sigma$ state were recorded using a pump/probe microwave-optical double resonance (PPMODR) technique from which the hyperfine parameters of $^{14}N (I = 1)$ were precisely determined. In addition, the $(0,0) A^{4}\Pi - X^{4}\Sigma^{-}$ band system of a $^{53}CrN$ molecular beam sample was $re-recorded ^{ab}$ from which the hyperfine parameters of $^{53}Cr (I = 3/2)$ were determined. A simple molecular orbital model is used to rationalise the newly determined hyperfine interactions for $^{53}Cr$ and $^{14}N$ in CrN and $^{14}N$ in MoN and the previously determined hyperfine interactions for other early transition metal mononitrides. An improved set of fine structure parameters for the CrN and MoN are determined