The microwave spectrum of HGeCl

The J = 101-000 and 202-101 transitions of nine isotopomers of chlorogermylene, H74Ge35Cl, H74Ge37Cl, H72Ge35Cl, H72Ge37Cl, H70Ge35Cl, H70Ge37Cl, H76Ge35Cl, H76Ge37Cl, and H73Ge35Cl are measured at 8-9 and 16-18 GHz. The effective rotational constants, the nuclear quadrupole coupling constants of 35Cl, 37Cl, and 73Ge, and the nuclear spin-rotation coupling constants of 35Cl and 37Cl are determined.