Microwave Spectrum and Molecular Structure of GeF3Cl

Measurements of the microwave rotational lines of four different transitions yield $B_0$ values in Mc/sec as follows: 2168.52 for ${\mathrm{Ge}}^{70}$ ${\mathrm{F}}_3$ ${\mathrm{Cl}}^{35}$, 2167.53 for ${\mathrm{Ge}}^{72}$ ${\mathrm{F}}_3$ ${\mathrm{Cl}}^{35}$, 2166.60 for ${\mathrm{Ge}}^{74}$ ${\mathrm{F}}_3$ ${\mathrm{Cl}}^{35}$, 2108.13 for ${\mathrm{Ge}}^{70}$ ${\mathrm{F}}_3$ ${\mathrm{Cl}}^{37}$, 2107.04 for ${\mathrm{Ge}}^{72}$ ${\mathrm{F}}_3$ ${\mathrm{Cl}}^{37}$, and 2105.98 for ${\mathrm{Ge}}^{74}$ ${\mathrm{F}}_3$ ${\mathrm{Cl}}^{37}$. For all these forms $D_J\approx 0.6$ kc/sec and $D_{\mathrm{JK}}<\left|1\right|\mathrm{}$ kc/sec. The molecular dimensions obtained for Ge${\mathrm{F}}_3$Cl are ∠FGeF = 107.7°±1.5°, $d_{\mathrm{GeF}}=1.688\mathrm{}\pm 0.017$ A, and $d_{\mathrm{GeCl}}=2.067\mathrm{}\pm 0.005$ A.